Electricity Saving Tips For Homes And Offices

Air Conditioners with Inverter technology can help save electricity

By on April 22, 2016
Hindi Translation: इन्वर्टर तकनीक आधारित एयर कंडीशनर बिजली बचाने में मदद कर सकते हैं

Air Conditioners are a pain point for most people in our country who are concerned about their electricity bills. The moment an air conditioner is added to the list of appliances used in a household, the electricity bills increase significantly. Although it is difficult to significantly reduce the “big” impact of an air conditioner on your electricity bills, but still some of it can be managed by choosing the right technology, doing the right installation/maintenance/operation and by doing the right insulation of the room where the air conditioner is used (more details in our articles listed at the end of this article).

When it comes to technology, there were not many available till sometime back. When BEE actively started analyzing and labeling the air conditioners, we got some good one in form of 5 star air conditioners. The latest and the most efficient technology that is available in market today is the Inverter Technology for air conditioners. Inverter technology is designed in such a way that it can save 30-50% of electricity (units consumed) over a regular air conditioner.

How does an air conditioner work?

For most people, air conditioner just throws cool air at the temperature one sets it at. But does it really work that way? In fact air conditioner during cooling process, takes the indoor air, cools it by passing it through evaporator and throws it back in the room. It is quite opposite to how our good old air coolers used to work. Air coolers used to take outside air, cool it with water and throw it in. But air conditioners just work on internal air. Along with evaporator air conditioner also has a compressor that compresses the gas (refrigerant) in the AC to cool it that in turn cools the incoming internal air from the room.

In a regular air conditioner:

The compressor is either off or on. When it is on, it works at full capacity and consumes full electricity it is designed to consume. When the thermostat reaches the temperature level set in the AC, the compressor stops and the fan (in AC) continues to operate. When the thermostat senses that the temperature has increased, the compressor starts again.

In an Air Conditioner with Inverter Technology:

The inverter technology works like an accelerator in a car. When compressor needs more power, it gives it more power. When it needs less power, it gives less power. With this technology, the compressor is always on, but draws less power or more power depending on the temperature of the incoming air and the level set in the thermostat. The speed and power of the compressor is adjusted appropriately. This technology was developed in Japan and is being used there successfully for air conditioners and refrigerators. This technology is currently available only in split air conditioners.

What is benefit of Inverter Technology?

Every air conditioner is designed for a maximum peak load. So a 1.5ton AC is designed for a certain size of room and 1 ton for a different size. But not all rooms are of same size. A regular air conditioner of 1.5ton capacity will always run at peak power requirement when the compressor is running. An air conditioner with inverter technology will run continuously but will draw only that much power that is required to keep the temperature stable at the level desired. So it kind of automatically adjusts its capacity based on the requirement of the room it is cooling. Thus drawing much less power and consuming lesser units of electricity.

Although air conditioner with Inverter Technology adjusts its capacity based on the room requirement, it is very important to install a right sized air conditioner in a room. Please make sure that you evaluate the room and air conditioner capacity before you make a purchase. Keep watching for this space as we are in process of creating a comparator for electricity savings in various air conditioners.


Are Inverter technology air conditioners slow in cooling?

Several people have concerns that Inverter Technology air conditioners do not cool well or cool slowly. However let us take this image as reference to understand how inverter AC works:

Inverter AC

Non inverter ACs are fixed speed ACs, where as inverter ACs are variable speed ACs. Non inverter ACs have compressors that go “On” and “Off”. Whereas inverter ACs have compressors that are “On” all the time. As non inverter ACs are sized for peak summer heat load, they are over-sized all the other times (in fact most of the time people oversize even for peak summer season). The drawback of the same is that the AC “Over cools” most of the time. So if you set AC at temperature of 25, it will cool it down to 23 or 22. Now one would question: then what is the use of thermostat? Well the thermostat (in a non inverter AC) switches off the compressor when the outside temperature has reached 25. But a lot has happened before that. In an AC, refrigerant moves from liquid to gas (by taking heat from the room) and then back from gas to liquid as the compressor compresses it. But if the refrigerant is more and heat in the room is less (which happens in over sized AC), it does not get enough heat from the room to convert from liquid to gas and it keeps moving as liquid. Now when the thermostat detects temperature and switches off the compressor, the refrigerant still remains in liquid state and thus has capacity to take heat from room to convert to gas. And so it takes more heat from the room and cools the room below the set temperature.

In comparison, the inverter tech AC changes the flow rate of refrigerant based on the heat of the room. When heat is less, the flow rate is less, when heat is more, the flow rate is more. And it does not switch off the compressor ever. It just makes sure that if temperature setting is 25, it is maintained at that level.

So the difference is: non inverter AC would over cool as shown in the picture. Whereas inverter AC will cool optimum. And thus one may feel that inverter AC does not cool or is slow.

Lesser known benefits of Inverter Technology

  • Regular motors need 3-4 times more current (more than running current) at startup. So the inverter/generator size needed to run any AC or Refrigerator increases significantly. But Inverter Technology air conditioners and refrigerators have variable speed motors that start up gradually needing much lesser current at startup. Thus the size of inverter/generator required to startup is less. For e.g. A 1.5 ton fixed speed AC that runs at about 10 Amp current may need up to 30 Amp current at startup and thus a 5 kVA inverter/generator. But an inverter technology Air Conditioner needs about 6-7 Amp current and not much more at startup and thus a 1.5 kVA or 2 kVA inverter/generator is good enough to support it.
  • Regular motors have much lower power factor. In commercial and industrial connections there is penalty for low power factor and rebates for higher power factor. An inverter technology motor will have power factor close to unity (or 1) which not only results in lesser electricity consumption but also help get rebates on better power factor.
  • If you are planning to use Solar PV for air conditioner, then it is the best to use inverter technology air conditioner or refrigerator as it not only reduces the size of PV panels because it consumes lesser electricity, it also reduces the size of inverter to be put along with the PV panel.

Here is a short video for tips to buy the best air conditioner in India

Here is a calculator for Sizing Air Conditioners in India

Select your city, dimensions of room, usage hours and sunlight checkboxes to get our recommendations. The inputs are on the left size and our recommendations on the right side. Also please note that these calculations are for a regular room in a house. If the room size is more than 400 sq ft then it would be better to call an engineer to do the evaluation.

Air Conditioner Sizing Calculator for India

(Note: This calculator is for a residential setup. It assumes a regular room with some furniture, basic appliances and 4 people in the room. Please do not use the numbers for a commercial setup.)

Check this link to see Top Ten Air Conditioners in India for Electricity Savings: http://wp.me/p4hAhQ-4I


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  • Mdrahim uddin

    dear sir, i want to know about daikin ftkc50nvm thailand / ftkp50rrv16 which one is good

    • https://www.bijlibachao.com Abhishek Jain

      Daikin FTKC from Thailand is better.

  • Mdrahim uddin

    dear sir, i want to buy 1.5 ton invertor best ac in india
    so,please suggest me which one is good

  • Rajeev Rai

    Dear Abhishek,

    I want to buy Mitsubishi MSZ-HJ50VA but the EER of cooling shows 2.44. Does this mean it is not energy effiecient, though it is an inverter AC. Is it less efficient than other inverter ACs and 5 star ACs. Your early response will be great as I am planning to buy this in next 1-2 days.

    Thank You.

  • shanmugam veerappan

    Dear Sir,

    I need your attention.

    I have 1.5 Ton Onida Inverter (Elegance-INV18ELE7) AC installed at my office in March 2016,

    My room size is 20×10, First floor. Show room Executive Recommended above A/c and that Tonnage.

    It’s a Browsing Center, I have 6 Computers, 1 Xerox machine, Epson inkjet printer-1 No. and 1.5 KVA UPS.

    I have provided a separate meter for the A/c. The power consumption in day time – 16 to 18 units for 9 hours and during the night hours, there is no other power utilization; the AC consumption is 11.5 units. The Xerox machine and the computers were unplugged.

    But, the service department staff says that this is the correct consumption.

    I ask the following questions to be answered by you sir:

    1 – Considering the room size of 20 x10, is it enough 1.5 Ton Inverter A/c? If it is enough, what is your opinion?

    2 – What is adequate tonnage for our office room size? 1.5 Ton or 2.0 Ton?

    3 – What will be the power consumption of the above 1.5 Inverter A/c normally for the same room size?

    4 – During the running time of A/c, we checked the Watts is 205 and 8 Amps. But, the service staff said that the a/c is running in low voltage. So the power consumption is high. Is it correct?

    5 – In the day time, we have fixed the cooling temperature in the A/c machine – 25°C. After running 8 hours, the a/c machine shows
    room temperature @ 26 – 28°C. But actually the room is full of cooling.

    6 – In the night hours (9 PM to 6.30 AM), after the unplugging of other utilities, we have fixed the cooling temperature
    in the A/c machine – 25°C. After running 8 hours, the a/c machine shows room temperature @ 27°C. But actually the room is full of cooling. We ask you that the inverter A/c’s temperature display is correct?

    7 – What is the solution to the high power consumption? and they said that 1.5 ton A/c not enough this Room Size.

    I need your early reply.

    Thank you.

    • https://www.bijlibachao.com Abhishek Jain

      Hello Mr Shanmugham,

      Here is my response:

      1) Your AC sounds highly undersized. You have 200 sq ft space with 6 computers and most probably 6-8 people in the room. Plus a few more appliances (mostly there will be a number of lights as well). 1.5 ton would be good for 200 sq ft only if you are in a city that is close to sea (where in general summer temperature does not go beyond 34 degrees). And then again it is assumed that there will be 3-4 people in the room with bare minimum appliances. In your case it looks like it is undersized.

      Gross undersizing of an inverter AC is not really good for electricity consumption because inverter ACs consume a whole lot of electricity at peak loads. With inverter ACs it is always better to oversize.

      2) You feel cooling at 26-27 because 26-27 are actually quite cold. It is proven scientifically that 25 degrees is the most optimal temperature for thermal comfort (where it is cold enough such that one can sit comfortably). Below 25 one will start feeling uncomfortable and would need warm clothing or blankets to keep warm.

      3) I do not think that power consumption is high due to low voltage. In fact at low voltage an inverter AC would consume less electricity as it will give less cooling. So I do not think that this statement holds any merit.

      I think 1.5 ton is not good enough for your room size. 2 or 2.2 ton inverter AC would have been better.

    • shanmugam veerappan

      Dear Mr. Abishek,

      Thanks for your response.

      1. What is the reason for offering this undersized A/c by the sales person?

      2. We have no idea before purchase; at that time we asked ordinarily that which one will be best to our needs. The sales person was repeatedly told that it is enough and better to less power consumption. Hence, we purchased this one.

      3. In my office, I have fixed a separate meter, in this undersized inverter a/c during the day time the power consumption comes high is OK. But why it is high during the night hours?

      4. Last week 15th Jul 16, I purposely turned on the inverter a/c unit in the night hours after unplugging all other utilities and then the consumption was 11.5 units, why?

      Moreover, that time there is no other person stayed in the room. Our room is covered with one side glass door and shuttered. Even it was the rainy day. Why the consumption was 11.5 units on only running the inverter a/c in the night hours – 9.30 PM to 6.30 AM?

      The Onida service persons were refused to agree with this fact.

      Now I ask you that

      • In case, if the 1.5 ton inverter a/c unit is shifted to my home (room size of 10 x 11), is it enough size?

      • Is shifting this 1.5 ton inverter a/c unit advisable?

      • After shifting this machine, what is the expected power consumption units in the 10 x 11 room size?

      • If the high consumption repeated, what is the remedy?

      • What tonnage and which is the best brand inverter a/c or star rating A/c for low power consumption for my office room (size – 20 x 10) with my utilities of a Xerox machine, 5 Nos. of computers, 3 or 4 persons working any time. What is your advice?

      • Onida Inverter A/c Brand is good or bad?

      • How to calculate power consumption units?

      Kind Reply shortly

      Thank you

    • https://www.bijlibachao.com Abhishek Jain

      Hello Mr Shanmugam,

      I do not know why you were offered undersized AC. Also there could be issues with installation as well. Ideally the consumption should not be so high for an inverter AC, unless it is undersized or there is something defective in it. It may be that the thermostat is not working and is defective.

      I would suggest that you try this AC in your 10×11 room. Although 1.5 ton is oversized for that, but then in inverter ACs, oversizing is better. It should consume much less electricity in your house and you can measure that. At home it should not consume more than 0.5-0.6 units per hour.

      If it is still high then there is some fault in the machine. Would suggest you to get the thermostat checked.

      I would suggest that you check the 2.2 ton inverter AC from Daikin for your office. It should consume about 1-1.2 units per hour during the day.

    • shanmugam veerappan

      Hello sir,

      Thank you for your kind information.

      Daikin inverter AC have many models. so i will confused it. please refer the best model in Daikin, O General or any other Brands brands. I want Low power consumption inverter a/c with minimum price.

      Kindly reply

      Thank you

    • https://www.bijlibachao.com Abhishek Jain

      You may look at Hitachi NEO 3200I (RAU324EWEAD) or ACE 3200I (RAU324EWEAS). They are efficient and may not be very costly as compared to other 2 or 2.2 ton ACs. Their cooling capacity is also reasonable.

    • shanmugam veerappan

      Hai sir,

      Thanks for continuous Help full Reply and best suggestion.

      Thank you

  • Neer

    Hello Sir,

    I am from Jodhpur (Rajasthan). My room Size is 10×14 and direct sunlight on roof. All other walls does not get any sunlight and 2 windows in my room. Will be using 10 months in an year.

    My usage will be on an average (from May to October) – 13-14hours per day. And (from December to March) – 10-11 hours per day

    I am looking to buy Inverter ac (Hot and cold) for my room. The model I finalized is “Voltas 18H Elegant S 1.5 Ton Hot & Cold Split AC”

    Now following are my questions, please help –

    1. My finalized choice is good one or should I go for another brand model. If yes please suggest me brand name with “Model No”.

    2. Which stabilizer should I opt for? Please suggest with brand

    3. Also please tell me my monthly bill according to my consumption of my city.

    P.S : Budget in not at all a constraint.

    Thanks! :)

    • https://www.bijlibachao.com Abhishek Jain

      Hi Neer,

      From what I know Voltas does not have Inverter Hot and Cold ACs. Their Hot and Cold AC models are regular compressor (not inverter). Your usage of AC is quite high and thus inverter hot and cold would be better for you. You can look at these models:

      Mitsubishi Heavy Industries SRK50ZMX-S
      General ASGG18LFCD
      Mitsubishi Heavy Industries SRK52HE-2
      Daikin FTXR50KVMA
      Blue Star HNHW18CBF

      There are good Inverter Hot and Cold models of 1.5 ton.

      To answer your questions:

      1) I guess list above should be better.

      2) All depends on how much voltage fluctuations you get. Choice will depend on the lowest voltage that you are likely to get. Voltage stabilizers have input voltage range they operate at. If you buy any stabilizer that has input voltage range of 180-240 and then if your voltage goes down to 120V, then the stabilizer will not work. So you need to know how low voltage can go in your area. Also make sure you buy a stabilizer with thermal overload protection (needed for inverter ACs).

      3) If you get a good inverter AC, it should not consume more than 0.6-0.7 unit per hour (it can be less if you buy the most efficient one). Which means in 13-14 hours it would consume 9-10 units of electricity. In Rajasthan cost of electricity would be about Rs 6-7 per unit. At Rs 7 we are talking about Rs 70 per day.

    • Neer

      Thanks for the quick response, Abhishek!

      1. Well after researching for a while I have locked myself for “Blue Star HNHW18CBF” as per your suggestions.

      2. No there are no voltage fluctuations here. It always remain at optimum level. So now could you please suggest me one OR two voltage stabilizers ( with thermal overload protection) brand with model. Please suggest the best one as budget is NOT a constraint. If possible, mention PRICE as well.

      3. Also let me know installation charges of fitting this bluestar AC into my room. By Charges I mean “Approx” – roundabout (Minimum to max)

      Thank You!

    • https://www.bijlibachao.com Abhishek Jain

      You can go for a VGuard VG400. It costs about Rs 1500, you can check this link: http://amzn.to/29OJP2S

      Cost of installation would be about Rs800-1000 for brackets, Rs 1000 or so for installation. Should not be more than that unless the installation is complex (on a window on high floor in a high rise building).

  • Mk arora

    Hi Sir,
    I Heard that Inverter AC cant run without proper EARTHING which comes from the depth of the ground and they cant run on the Earthing provided by the Electricity Department alongwith their cable. Can Inverter AC Run through the earthing provided by the Electricity Department or we have to install earthing from the depth of the Ground Separately. I am going to buy Daikin Inverter AC 1.5 Ton, Model No ATKP50RRV16 (R32 Series) . Can I run My AC on the earthing provided by the Electricity Department. I will also use a Stabilizer with that, Kindly answer

    • https://www.bijlibachao.com Abhishek Jain

      By the way, even stabilizers have Thermal Overload protection. So if you go for a voltage stabilizer with thermal overload protection, then it should protect your AC from power surges. I do not think you need to do any special arrangement for earthing just to protect the AC.

    • Mk arora


      Installation people said that Inverter AC will not run if the Earthing specifically from the depth of the ground (individually for the building) will not there. We have earthing provided by the Electricity Department which comes alongwith their cable, Electricity Department and Private Electrician visited and confirmed that the earthing is there which is provided by the electricity Department, but AC installation people keep on insisting that earthing from the depth of the ground has to be there, otherwise the inverter AC will not run. kindly advise

  • kartik

    Hello sir. I came here just to have a quick glimpse of some topics but nw that i see i m having doubts of my own so i ask, Plz tell me Would it be great to invest in Videocon inverter ac? The technology has been recently conceived so it is obvious i m having doubts in the capabilities of Videocon. I want expert opinion on this and maybe u sir can help. Plz feel free to include technical data too, if any. Thanks.

    • https://www.bijlibachao.com Abhishek Jain

      Inverter technology is not a new technology. It has been there in India for more than 5 years now and in countries like Japan and in many countries in Europe, it has been there for many more years. So as far as technology is concerned, it is not new. Japan’s market is now 100% on inverter technology.

      Durability of any product cannot be evaluated 100% based on technical specs. Also manufacturers in India just provide bare minimum specs that are mandated to them by the government. So there is not much that you can do to evaluate using technical specs.

      If you look st specs, then Energy Efficiency Numbers of Videocon look quite good as they have been rated BEE 5 star. They also have copper condenser and evaporator with good corrosion protection (gold fin). So if you do not consider the brand value, the specs look really good. However, I would say that Videocon is not a premier brand for ACs. Specs look good, so if you want to go with just the specs then the models look good.

  • Ashwant krishna

    Hello Sir,
    I am planning to buy a Daikin Inverter 1 TON or 1.5 TON split AC, but my area has low voltage, should I go for a regular stabilizer or double booster stabilizer ??
    I heard Inverter AC requires a Stabilizer with surge protection. Have heard using stabilizer more than the requirement, there will be some unwanted power consumption by the stabilizer. So what is the best stabilizer you would recommend me?

    My room size is 120 sq.ft (L=12 ft / B=10 ft) , with one window facing West & one window facing North. The lofts in my room are closed with doors & my flat is located in the middle floor, one or two person would be occupying the room. I am in Chennai & the summers are very Hot. I used your Air Conditioner Sizing Calculator, it suggests me for a 1 TON Inverter AC, Just to confirm, should I go with 1 TON or 1.5 TON based on the condition of my room I have mentioned above.

    Also I am tight on budget, so only going with Daikin instead of Hitachi. If possible please suggest me few models. it would be very very helpful.

    Thank you,
    Ashwant Krishna.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Ashwant,

      Daikin is a great brand and quite economical as well. If the calculator suggests you 1 ton, then you should be good with 1 ton inverter AC. You may go for 1.5 ton if you want as oversizing is not bad at all for inverter ACs, but if you are tight on budget then 1 ton should be good enough.

      Regular ACs can get damaged at low voltages. But Inverter ACs do not get damaged at low voltages. But their output certainly goes down a bit at lower voltages. So if you want your AC to cool properly even at low voltages then you need a stabilizer. However, Inverter ACs’ PCB can get damaged if there is a power surge (sudden high voltage caused by short circuits or lightning, etc). Many manufacturers there days are making ACs with inbuilt stabilizer and even with surge protection for PCBs. But if the AC does not have it, you can certainly put one to protect it. Voltage stabilizers also have thermal overload protection.

      You need a double booster only if your voltage goes too low. I cannot suggest which one would be better without knowing how low the voltage goes in your area. Check this cataloge from VGuard where they mention operating voltage range of various models: http://www.vguard.in/uploads/product_brochures/AC_Stabilizer.pdf

      You will have to figure out how low the voltage goes and then select a model accordingly. Ask your electrician to help you out with the same.

    • Ashwant krishna

      First Thank you so much, very helpful information.
      I have one more query in continuation with our previous conversation, ” If the calculator suggests you 1 ton, then you should be good with 1 ton inverter AC. You may go for 1.5 ton if you want as oversizing is not bad at all for inverter ACs, but if you are tight on budget then 1 ton should be good enough”

      Sir, if i decide to stretch my budget & invest in a 1.5 TON Inverter AC, would the energy efficiency be the same as a 1 TON Inverter AC ?
      i.e.,What I want to know is that, would both 1 TON & 1.5 TON AC consume the same number of Units of electricity per hour ?? would the electricity bill be the same irrespective of 1 TON or 1.5 TON Inverter AC ?

      Thank you,
      Ashwant Krishna :)

  • Mo

    Ho Abhishek
    I have a 2 ton (24000 btu) inverter split ac. How many kva generator do i need. I currently have a 6 kva honda petrol generator.


    • https://www.bijlibachao.com Abhishek Jain

      2 ton inverter AC should not need more than 3 kVA generator. Your 6 kVA should be more than enough.

  • lgultimate

    I have been told that there are many users complaining about inverter ac…so i want to be acknowledged about inverter ac…
    1. Are there any complaints users facing around?

  • lgultimate

    Sir, I am looking to buy samsung triangle inverter ac AR18KV5NBWK….i came to know that all inverter ac generally fail in 5-6 months, as they require earthing due to dc motor as compared to ac motor(non-inverter)…

    So is it true that-

    1. Inverter ac require earthing?

    2. They have shorter half life as compared to non-inverter ac

    • https://www.bijlibachao.com Abhishek Jain

      Hi lgultimate,

      All appliances require proper earthing. Inverter ACs do not fail in 5-6 months (I have one since last 2+ years and it has not failed. My friends have it for more than 3 years and it has not failed). I do not think that they have shorter life.

    • lgultimate

      thank you abhishek :)…

  • Shehzad Nagorwala

    Hi Abhishek,

    I have 1.5 Ton Ogeneral Inverter AC installed at my home on 16th May 2016, My room size is 10×10, Top floor.
    I have below questions to be answered by a specialist like you sir,

    1 – Have I intalled an oversized AC cosidering the room size of 10×10, If yes than what would be the drawback of doing so ?.

    2 – I had no other option but to install the ODU at the place where it does not gets fresh air at all, The out door unit throws the hot air in the lobby and it also gets circulated around the outdoor unit all the time, Will it effect the perfomance in terms of cooling, Power consumption and durability of Machine ??? If yes then what would be the solution to owercome from this Menace ??? That was the only place avaliable to install the ODU, I am planning to fit a exhaust Fan just ahead of the ODU so it can help in throwing the hot Air away from the ODU, Will it help ???

    3 – I have gone through the introduction column about Inverter AC on your website and it says that the compressor of Invertern AC never goes off, But sir whenever I set the temperature at 24 or 25 after some time the amps comes down at as low as 0.02 that means the compressor went off, Why it is happening ? I have installed an Gelco Aac swith which shows real time amps.

    4 – Initially I set the temperature at 22 then after an hour at 24/25, but after resetting the temperature cooling goes down significantly, Why so?

    5 – Kindly evaluate my power consumption and highlight is something is wrong happening with my AC :

    * Temprature set at 22 for 12 hours consumes 11 units and amps ranges from initial 5.6 to 2.5 after 2 hours

    * Temprature set at 22 for an hour then 24/25 for next 11 hours consumes 7 unis.

    Hoping for early reply

    Thanks in advance

    • https://www.bijlibachao.com Abhishek Jain

      Here is my response:

      1) Oversizing is not bad for inverter AC.

      2) It is important that the air around the outdoor unit does not get too hot. It decreases efficiency of the AC. If it is hot, then you will have to figure out a way to get cooler air around it.

      3) If your room is cooled down to 22 and then you change the temperature to 24-25 then there is no work to be done to cool the room, then obviously compressor has to be stopped (running compressor will cool further which is not required as you changed temperature to 24-25). So low amp is as expected.

      4) Cooling goes down because you increased the temperature. The cooling will happen as per the temperature set. If you increase the temperature, obviously cooling will go down.

      5) At 5.6 amp, power consumption is about 5.6 x 230 /1000 = 1.3 unit per hour …. at 2.5 amp power consumption is 2.5 x 230 / 1000 = 0.575 unit per hour. If amp is 5.6 for 2 hours then for two hours consumption is 2.6 units and 9 hours at 0.575 or 5.17 units …. total of 11 units does not match with the numbers that you have provided.

      Also in general power consumption is too high considering you are using 1.5 ton AC for 10×10 room. I hope you bought an energy efficient Inverter AC.

    • Shehzad Nagorwala

      Thank you sir for your reply,

      Last night I have closely monitored the Amps, Temprature set and ON/OFF timings of my AC. Please help and reply with your valuable inputs for following points :

      1 – Used AC for 13 hrs continously at the Temprature of 22 throughout this period, Cooling was awesome, Consumed 8 units ( Without counting other appliances ), Is it fair usage ? Amps stood at 5.5/5.6 for 1st 3 hours, then it went down to 4 Amps then again went down to 2.5 Amps after 2 hours then remain stabled around 1.7 to 2.5 Amps till the end.

      2 – You have mentioned that power consumption is too high considering the room size of 10×10 and using 1.5 Ton inverter AC, I have installed OGeneral 1.5 Ton Inverter AC (ASGA18JCC) and this is the only model available in Ogeneral inverter series for 1.5 Ton. Is this Model of AC energy efficient ?

      3 – Sir unfortunately it is impossible for me to figure out the way to get cool air around out door unit as the current location where ODU is fixed was the only available option.
      That’s why Sir in my previous query also I have asked you that what if I fix a “Exhaust Fan” few feets away from the ODU so the exhaust fan can throw the hot air circulating around ODU to the lobby. Currently my ODU gets abnormally HOT every time I use the AC
      Sir can this be the reason of high energy consumption and low in cooling ???

      24/25 Temprature does not even give the cooling like 1 Ton AC.

      Please help

    • https://www.bijlibachao.com Abhishek Jain

      Hi Shahzad,

      The model that you have is quite efficient. In general it should not consume more than 0.6-0.7 unit per hour for a right sized room. So about 8 units in 13 hours for right sized room at 25 degrees is good. You are keeping it at 22 for 10×10 room and it is consuming 8 units, which sounds fine. It could be lesser if you use it at 24-25.

      Also inverter AC have more precise cooling. So if you set it at 24-25 then the room temperature would be close to 24-25. A 1 ton fixed speed AC may be slight oversized for your 10×10 room and thus it may be cooling more.

      You can certainly put an exhaust fan to get hot air out of the lobby.

  • Debu

    Hi my room needs 1.3ton AC but area is quite humid and so I am planning for inverter AC. So should I buy 1.5 ton inverter AC or 1ton inverter AC??
    How do you rate 1.5ton O-General inverter AC over Hitachi inverter AC and carrier inverter AC? What AC do you refer in terms of energy efficient ??

  • Vasu

    Could you suggest me best 1.2 ton r 1.5 ton inverter Ac ,which can work even outside time 50 degree centigrade

    • https://www.bijlibachao.com Abhishek Jain

      Hi Vasu,

      Models from Hitachi, Mitsubishi Heavy, O General, Samsung have higher operating temperature. You can go for anyone of them. You can look at list of top AC models on this link: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

    • Debu

      O-General has a reputation to be the best as far as temperature efficient goes as it is mostly tested in middle East where 50 deg temp is quite normal ……. Also as per market survey i found guus dont have any complain with O-General…… So you don’t need to call for service as far the any machinery dispute concerns…. But you have have concern with leakage issue as far you have availability of rats is concerned ….. Stay cool enjoy

    • https://www.bijlibachao.com Abhishek Jain

      You can certainly go for O General.

    • Debu

      Hitachi is well know a decade ago as reputed for its cooling efficiency is concerned… But you may have issue with service …. But with O-General is that you can open yourself and do the maintenance …….!!!

    • Debu

      Talking specific about 50 degree you can blindly go for O-General the best you perhaps could get…….

  • mt

    in Mangalore, Karnataka, south India, I would like to install solar power panels in order to have electricity supply 24 hours a day for our home whose average consumption is about 600 units. kindly advice with regard to the requirements, best systems available and cost. thank you. m.t.

  • rachit tiwari

    Hy abhishek,
    I just bought 2 ac of panasonic inverter technology as they have told us that the electricity consumption per hour will be of 1/2 unit as normal ac consumes 1.5 unit per hour..
    But we calculated the units and these two ac actually jumps the bill from 4000 to 8000 nd still counting.
    What can be the reason behind it.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Rachit,

      A lot depends on the energy efficiency of the model. Most efficient 1.5 ton inverter AC would consume 0.5 units per hour, but not all have the same efficiency. Number can be as high as 0.9 unit per hour for an inverter AC.

      A lot depends on what is the efficiency of the model, secondly if the model is right sized or undersized and also on number of hours you use the AC.

      If you use it for long, then the bill will be high.

      If the model is not very energy efficient then consumption will be high.

      If your room needs 2 tons of cooling and you put a 1.5 ton inverter AC, then your bill will be high because it will work at the least efficiency.

      So there can be lot of things behind it.


    Abhishek my room size is 10*10. Recommendation from your website and some others is 1 ton. What if I go for 1.5 ton keeping in view of shifting somewhere else in future. I have heard that oversize will not remove humidity properly but other thing is it true that it will cool faster and running time for compressor will reduce due to fast cooling by 1.5 ton ac compared to 1 ton. Please give your expert comments on both 1) Humidity factor 2) Fast cooling and less running time.

    • https://www.bijlibachao.com Abhishek Jain

      If you want to go for 1.5 ton AC then go for an inverter technology air conditioner. Non Inverter are really bad when oversized. If you want to oversize then inverter tech is the best option.

  • Vicky

    What does inverter ac consume after reached to set temp like if i set 27c . And what is the minimum wattage it will take.. i just bought hitachi 5200i 1.5 ton .

    • https://www.bijlibachao.com Abhishek Jain

      Depends on the heat load in the room.


    Abhishek Lg has Multi Flow Condenser which are aluminum with pre coating. Is there more chances of leakage in it? And difficult to repair? I live in UP. Is it okay to buy that Ac. Also RAU012KVEA of Hitachi is unrated Inverter Ac or does it have ISEER value?

    • https://www.bijlibachao.com Abhishek Jain

      LG and Samsung both have PFC with strong corrosion protection. In fact they also give 5 years warranty on condenser. If the environment is not corrosive, it should not fail. Unrated Hitachi Inverter AC will not have ISEER value, but this model has EER of 3.63 which means it would be a BEE 5 star rated inverter AC if it gets rated by BEE. It will not be as efficient as Kashikoi 5400 but then it will still be BEE 5 star rated.

  • Elex Patel

    What about Mitsubishi?you never mentioned ever! In quality assurance..is it worth buying?

    • https://www.bijlibachao.com Abhishek Jain

      Mitsubishi is a great brand. We have mentioned it so many times in our comments. I would request you to please recheck all the comments.


    Thanks Abhishek.. I have selected two models Lg BSA12IEB and Lloyd LS13VI. Which Model should I prefer? The warranty on compressor on Lg is 10 years and on condenser is 5 years while on Lloyd compressor is 10 years and on condenser is 5 years. Taking all other factors which should be best among these. Please tell the reason also of selection of one.


    I am looking for a Stabilizer for 1 ton inverter Ac. What capacity and which Model stablizer will be good. And what should be the range of voltage input? Is 170-220 range enough?

    • https://www.bijlibachao.com Abhishek Jain

      The range depends on how low the voltage goes down in your area. If it goes down to 130 then the one with input voltage range of 170-220 V will not work. For one ton inverter AC even 2 kVA stabilizer would be good enough.

  • Priyank

    Hi Abhishek,

    This is a great help you (and your team) have been doing.

    I am living in Jabalpur (MP) and planning to buy ACs for my home. I read about the inverter tech and feel that this is suitable for my needs, considering less power consumption primarily. However, with so many brands available in the market, the decision making process suffers a jolt. This is where I’d like to have your advice. Assuming a budget of around INR 40k, which brand would you suggest to go with?

    P.S. My uncle has recently purchased 3* Non inverter Bluestar ACs so there is a bit of sway in favour of it but I am still looking for the best options available.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Priyank,

      There are lot of parameters that determine right size and right star rating for an AC. It will not be productive if I ask you all of them and then you reply and then I reply. I would strongly suggest that you look at Calculator, FAQ and list of top ACs on this link on our website: http://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      It will help you choose the right size (tonnage), right star rating (inverter or non inverter) and right model/brand of AC for your room.

      You can also look at our database of all ACs available in market on this link: https://www.bijlibachao.com/research/list-air-conditioners-available-indian-market.html

      You can use the filters on the table on this page to filter out models as per your budget.

      As for brand, I would suggest that you look at our perception of various brands on this link:


      If you still have doubts, do let me know and I will certainly try to help you.

    • Priyank

      Hi Abhishek,

      I did the calculations and got a capacity of 1.2 tonnes for Inverter type and 1.2 tonnes BEE 3* for Non-inverter type. Since, there are not many products with the exact tonnage in the inverter type AC, should I go for 1 tonne or 1.5 tonne capacity?

      In case you advise for 1.5 tonne, I saw a comparison amongst the top brands (listed out in the link you shared) and observed that almost all of them are above INR 40k. Keeping my budget in mind, I have shortlisted 3 products (hoping that BEE 3* Inverter type will suffice) – (a) Hitachi – ACE/NEO 3200I, (b) Hitachi – TOUSHI PRO 3200I , and (c) Bluestar – CNHW18CAF.

      Now, the EER for Hitachi products are significantly better than Bluestar, and there is a marginal difference in the cost of the products. In this case which would be the best bet in the longer run?

    • https://www.bijlibachao.com Abhishek Jain

      Hi Priyank,

      If the calculator suggests BEE 3 star non inverter then BEE 3 star inverter will be far better. That is because BEE 3 star inverter AC is better than BEE 5 star rated non inverter AC. As a brand Hitachi is certainly better, but just make sure which brand has better service in your area. Your local dealers or users of a brand can provide you some feedback on the same.

    • Priyank

      Thanks a lot, Abhishek, for all the suggestions.

  • Darpan

    One of AC expert in our area says that all these star ratings are a gimmick. While logically I can’t believe so, what is your take on it?

    • https://www.bijlibachao.com Abhishek Jain

      Hi Darpan,

      A private entity doing gimmicks to sell something is understandable. I do not understand why a government entity like Bureau of Energy Efficiency will do a gimmick ….. and that too a gimmick that has been going on for more than a decade and has not been caught yet …. no public uproar about it when government is spending so much money to get the country energy efficient? …. and that too a program that is getting funded by many successive governments …. BEE was formed by Vajpayee Govt in 2002 …. it continued to get support from two congress governments after that …. and then again it gets support from current government ….. if a government program is assumed to be a gimmick, I do not know what people will believe in.

  • bobson gandhi

    Good Morning , I want to buy cassette air conditioner for 15*30 room.Can you please suggest me some good brands with model number.Is inverter technology also comes in cassette ac.Which one is better split ac or cassette ac ?

  • Ankit Singh
    • Vicky

      What is the total cost for 500w or 1kw system. How to get gov. Sub. For solar panels is it easy

  • Shubham Shukla DK

    Agar normal new ac 18 digree mai chalao toe wo 18 digree tk pahucha deta hai and nhi toe trip kitne digree mai hota hai

    • https://www.bijlibachao.com Abhishek Jain

      Yeah bilkul bhi zaroori nahin hai ki Normal AC of 18 degree par chaloo karenge to woh 18 degree tak temperature pahuncha dega ….. agar aapka AC chota hai aur room bada … aur room mein kaafi garmi hai …. to AC kabhi bhi trip nahin hoga … kyunki temperature kabhi bhi 18 tak nahin pahunche ga


    Hey can you please guide me for split ac. I need 1 ton ac for my 10*10 room. I found LG model BSA12IEB Inverter Ac. But its EER ratio is 3.47 which is less than non-inverter ac (3.60). Also ISEER rating is not given in the specifications. So is it really energy efficient than non inverter ac? Also would you please tell what are the disadvantages of inverter ac in long term from maintenance point of view. Means is its part costly, or some other problems.

    • https://www.bijlibachao.com Abhishek Jain

      Hello Mr Deepak,

      Inverter ACs are at least 20% more efficient than a similar EER non inverter AC. So if you want to do apples to apples comparison (and ISEER is not known) then divide EER of an inverter AC by 0.8 to do comparison. So inverter AC with nominal EER of 3.47 would be equivalent to a non inverter AC of EER of 3.47/0.8 = 4.34 …. So this AC is certainly energy efficient (any inverter AC with EER above 3.3 is good).

      I have been using inverter AC myself for last 2+ years now. I have heard that parts are expensive, but then I have never had to change them. In fact my friends in Mumbai who have been using inverter AC for more than 3-4 years now also never had any such problems where parts had to be changed. Inverter ACs have costly PCB, but then PCB will fail if you have bad power quality (surges or sudden increase in voltage). If you get surges in your area (due to short circuits, lightning, bad wiring, etc), then you should go for surge protection for inverter AC.


      Hey thanks Abhishek for your help. Can you also tell me that inverter ac compressor after reaching desired temperature reduces its speed and run at low rpm just enough to maintain constant temperature. So if assume our set temperature is 23 degree than after reaching that temperature how much percentage rpm reduces. Is there any figure for that like 30-40-50%. Because in some ac specifications current, power input at half load is given so does that mean the Compressor speed reduces maximum by 50%?

    • https://www.bijlibachao.com Abhishek Jain

      It does not depends on temperature. It depends on the cooling load in your room. Cooling load depends on multiple factors like outside temperature, thermostat temperature, size of room, things in room, people in room, appliances in room, insulation of room, etc ….. So no one can tell you at what percentage it will run at temperature setting of 23. AC decides itself based on the load it can sense.


      Thanks Abhishek.. I have selected two models Lg BSA12IEB and Lloyd LS13VI. Which Model should I prefer? The warranty on compressor on Lg is 10 years and on condenser is 5 years while on Lloyd compressor is 10 years and on condenser is 5 years. Taking all other factors which should be best among these. Please tell the reason also of selection of one.

    • https://www.bijlibachao.com Abhishek Jain

      My personal opinion: LG is a better brand than Lloyd. But then that’s my preference. You may get different feedback from many other people. And there is no reason, it is just my perception.

  • Karthik Ramayanam

    Hi, I brought 1.5 tonnes Samsung inverter AC for 10 x 10 ft room size with 1520 Watts with 6.7 amps. But I’m getting more electricity bill and technician are unable to repair it. Can u tell me why it is consuming 9amps I.e 2-3 units per hour continuously and I observed that even though room temp attained to recommend settin it is drawing more amps.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Karthik,

      Can you check the temperature of air close to the indoor unit of the AC? Is it really high? Is the room getting cooled properly? If the room is getting cooled then it looks like a problem of thermostat or the compressor (which is not able to adjust its speed). Most likely I think it would be problem of thermostat. It should hardly consume 0.5-0.6 units an hour in your case.

  • Prakash

    dear abhishek, i have decided to buy ac of 1.5 ton for my bedroom – i am confused between panasonic and hitachi inverter ac – shopkeeper- croma – told me to buy panasonic (rs 48500/-) i choose hitachi (47500/-)

    which one i should buy? i have a vouchers of croma so i have to buy from croma . which Company is better in terms of noise, cooling, less maintenance, material wise, service in surat, and energy savings…… or any other brand if you can suggest??? inverter ac is ok or i should go with 3* or 5*??

  • swarnim verma

    hello, first of all hanks for such information, actually i am confused between two models : 1st is hitachi RAU318AWD and daikin FTC50QRRRV16. My budget is around 35-40K and usage is 6-8 hrs a day for 4 months a year. I have chosen these models as per Machine available with local vendor . If you have some other suggestions that will fir my budget , would be a great help.

    • https://www.bijlibachao.com Abhishek Jain

      Go for Daikin FTC model.

  • jagdish bhavani

    HI I am very happy that you are spreading good information (difficult to get all information at one place).
    I want to buy split AC for my home (ahmedabad, 4-5 month usage and very hot condition).
    The AC requirement will be ~ 1.5 Ton.
    Now a days Chinese AC – Gree Ac with inverter are available in market with approx cost of 40K (1.5 ton). What do you suggest? Shall i go for Gree Split AC?
    What could be probable issue can happen with Chinese imported AC?

  • Prathamesh

    First of all I must appreciate your web page. You guys are not only allowing people to choose best Electronic equipment but also doing a great service to nation by reducing carbon footprint of our nation. Excellent initiative keep it up! :)

    Now back to my problem. I want to buy a split AC for my Living room.

    Here are factors to consider
    1. Room is not directly exposed to sun (by wall and ceiling). I live in Mumbai so air is humid and temps are around 27 to 34 (±5)

    2.Room has 1 window of size 6×4 feet

    3. There are 3 entrance to this room. Out of which 1 one has door and two are open. Although we either install thick cloth curtains, trsnperent plastic curtains or collapsable door please consider lossed for curtains ( almost as thick as cloth carpets please suggest among them or any other alternative to minimise losses).

    4. Room size is almost 16×11 feets and height is approximately 10feet with false ceiling (+1.5 for actual)

    5.although money is not issue but the difference between lets say the cheapest model of that tonnage and model suggested should be recoverable within 5 years.

    6. The usage will be typically 4hrs a day max.(min can be 0hrs although i intend to use as much as possible ) Will use for approx 6months in a year

    7. All lighting are LED and TV is also LED(considering plasma tv emit a lot of heat) so no major heat source in room

    Please suggest toneage and AC so that room will be cooled optimumly without much stressing or idealing the compressor.

    Should I opt for Inverter or an Non Inverter.?

    I had lloyd LS18PI or LS18AI in mind since they offer great price performance ratio and are available in Local Shop.

    Thank you!

    • https://www.bijlibachao.com Abhishek Jain

      Hi Prrathamesh,

      I would strongly suggest that you look at Calculator, FAQ and list of top ACs on this link on our website: http://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      It will help you choose the right size (tonnage), right star rating (inverter or non inverter) and right model/brand of AC for your room.

      You can also look at our database of all ACs available in market on this link: https://www.bijlibachao.com/research/list-air-conditioners-available-indian-market.html

      You can use the filters on the table on this page to filter out models as per your budget.

      As for brand, I would suggest that you look at our perception of various brands on this link:


    • Prathamesh


      Thank you for your response !

      I have used your calculator and I got tonnage as 1.5 but I am confused with the company the lloyd is ranked at 10th place in you table. With claimed IEER of 3.91. Will it be worth to spend lets say 10-15k more for the topmost Hitachi model in your 1.5 ton list.?

    • https://www.bijlibachao.com Abhishek Jain

      Hi Prrathamesh,

      Firstly, it is very important to insulate the room properly when using an AC. If you have open doors, then that can significantly increase the electricity consumption of your AC. Any exchange from outside should be minimized.

      Your usage of AC would be about 700-750 hrs which would be like a borderline case for a BEE 5 star rated non inverter AC. You may go for a BEE 5 star rated non inverter AC as well. If you plan on minimizing the costs, then I would suggest going for Voltas or even Lloyd BEE 5 star rated AC. That would come in about 35-38K. You may also choose Lloyd Inverter AC (in fact if you do that then that would be better, but then it is not absolutely necessary). The suggestions by the calculator if based on 3 years payback. If you are fine with 5 year payback then I would suggest that you go for inverter tech AC. I would not suggest you to go for most efficient AC for less usage.

    • Prathamesh

      Thank you very much for clearing my doubts regarding losses. I will try to minimise them as much as possible.

      Which one would you suggest among lloyd LS18PI or LS18AI ?

      From what I can see the PI model is slightly more efficient at ISEER 3.98 as compared to AI model at 3.91, but when I compared current draw at half load is slightly heigher thn AI model. Although PI model has better cooling capacity at half load so I am bit confused.

      I have AI model available at my near store. Will have to look for PI model though.

      I am considering half load to be significant because, I usually set temperature around 25-27 & most of the time its near to upper limit.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Prrathamesh,

      PI model has more cooling capacity and higher range and that is why its current is more, whereas AI model has lesser cooling capacity and thus lower current. I do not think that there would be a problem in going for AI model as well, because in Mumbai I have observed that a right sized inverter AC mostly runs at less than 50% of the max capacity most of the time. So having lower minimum cooling capacity is in fact better, especially if the current is less.

    • Prathamesh

      Okay. I will opt for AI model in that case. Thanks a lot.

      I came across an article with new low power fan technology like super fan or BEE 5 star rating fan.

      I have 2 fans that are 2 year old. And 2 fans which are almost 4-5 year old. Is it suggested to upgrade them to these low power energy efficient fans?

    • https://www.bijlibachao.com Abhishek Jain

      Well Fans are the most ignored appliance with most impact on electricity bills. I understand that you are from Mumbai and in Mumbai tariff for last slab is Rs 10 a unit.

      Your old fan at best would be a 75 watts fan. In worst case it would be consuming 90-100 watts. Let’s take best case scenario of 75 watts. You have 4 fans in all. Now let’s look at economics if every fan is used for 10 hours a day (I am sure there would be some which would be used more).

      So 4 numbers of 75 watt fans for 10 hours a day amounts to: 4 x 75 x 10 = 3000 Wh or 3 units of electricity. In 30 days it would be 90 units of electricity. Which at Rs 10 a unit would cost Rs 900 per month.

      If you go for 35 watt fan you save (75-35)/75 = 54% electricity. So your cost for fans for your house comes down to Rs 420. So a savings of Rs 480 per month.

      In 12 months you save: 480 x 12 = Rs 5760

      Now this is number based on 75 watt per fan. And I am very sure that older fans would be about 90 watts. And 10 hrs per day is also an optimistic number as several fans are consumed a lot more. So the energy efficient fans save a lot of electricity.

      Even if you go for a BEE 5 star rated regular fan (not super efficient fan), even that is just 50 watts fan. And if you go through DSM programs of Tata Power or Reliance Energy, you would get them for quite cheap (just Rs 1100 for a replacement fan). Which makes the whole thing super attractive.

    • Prathamesh

      Thats kind of good news am expecting the fans to consume 90watts. Usually only 2 fans are used in our house for approx 8 hrs thus 1800wh. So approximately 600rs per month is consumed by fans only so replacing those 2 fans with 40watt can brigh the consumption down to approximately 300rs which is quite nice.

      Thank you for providing such in depth idea about impact of fan on the bill i will try to replce them with super efficient fan as soon as possible

  • himanshu

    Im thinking to buy a voltas inverter ac of 1.5 ton model 18v IY which cost me arround 45k with installation is it good or there is some other good inverter ac in this price range suggest?

    • https://www.bijlibachao.com Abhishek Jain

      HI Himanshu,

      It is a good model with BEE 3 star rating. You can also look at Mitsubishi Electric MSY-GK18VA or Daikin FTKP/DTKP/ATKP which may cost you about the same.

  • Deepanshu Verma

    hi team
    I was thing to buy inverter AC either daikin(FTKM50RRV16) or o’genral(ASGA18gcc) but when i contacted local dealer he says we require grounding(earthing) in the house to install inverter AC. Is it some kind of prerequisite for inverter AC or its just a hoax.

    • https://www.bijlibachao.com Abhishek Jain

      Well Earthing is one thing that is a must for any house whether it is using AC or not or even Inverter AC. It’s an absolute required thing for the safety of the people in the house as well. And yes, it is required for inverter AC as well.

  • Kuldeep Bhandari

    Hi Abhishek,

    I am living in delhi, planing to buy a spilt AC 1.5 ton, 5 star for 1st floor room. What model do u suggest in samsung (As having samsung voucher so need to buy from samsung only), my budget is 35-37K.

    Also looking for1 more Split AC (1.5 Ton,5 Star) for room (150 Sq Ft) on top floor (4th Floor), daily running 6-7 hours,direct sunfacing, under 35-37K.

    Please suggest.


    • https://www.bijlibachao.com Abhishek Jain

      Based on the data that we have (from CompareIndia), you may only get Samsung AR18JC5HBWKNNA which is a BEE 5 star rated 1.5 ton AC from Samsung. But our source of price is online websites. You may have to check in the market. All BEE 5 star rated models from Samsung have same energy consumption. You can go for anyone of them.

  • sajid shaikh

    dear abhishek, i have decided to buy ac of 1.5 ton for my bedroom – i am confused between panasonic and hitachi inverter ac – shopkeeper- croma – told me to buy panasonic (rs 48500/-) i choose hitachi (47500/-)
    which one i should buy? i have a vouchers of croma so i have to buy from croma . which Company is better in terms of noise, cooling, less maintenance, material wise, service in surat, and energy savings…… or any other brand if you can suggest??? inverter ac is ok or i should go with 3* or 5*??

  • Amit Gupta

    Hi Abhishek , I want to purchase one Inverter AC for my mother room.Currently it is having 3 year old LG window AC but it has high power consumption so I want to replace it with inverter AC.1) Daily usage is 6-7 hours 2) Per unit rate is 6.50 3)My flat is on 14th floor (2nd last) and have south facing balconies 4) I want to buy 1 Ton Inverter AC 5) room size is 11*11 and height is 9 feet abd currently having 1.5T window AC.Please suggest whether I should go for it or not and 1 Ton is ok or not .Thanks Amit

  • Shekar

    Thank you for the effort in putting the article together. Very useful. Just one question:
    Why would copper or aluminium coils collect rust? I didn’t get that.

    • https://www.bijlibachao.com Abhishek Jain

      Both are metals and so both will rust. Copper turns green if kept in hot and humid climate. Aluminium also turns dark grey when it corrodes.

      Now these metals are used to make heat exchangers in AC. The indoor part which is called evaporator cools the air inside. The inside air may be humid (you must have seen water coming out of outdoor unit of AC), when the air comes in contact with the evaporator, it cools. The humidity in air turns into water on the surface of evaporator. It is then collected at the bottom of indoor unit and is moved out using a pipe.

      The outdoor unit has condenser which is heat exchanger. The outdoor unit is exposed to environment outside which can be rainy, humid, hot, polluted, etc. All of which can cause corrosion.

    • Bhadra

      I think you mean corrode.

    • https://www.bijlibachao.com Abhishek Jain

      That is right. My bad I mentioned rust. I mean corrode.

  • Shakil Anwar

    Hi Abhishek

    I hve a 5 bhk flat of the following dimensions
    Master bedroom 294 sqft
    living room 680 sqft
    open kitchen 110 sqft (along with living room)
    4 bed rooms of 130 sqft each

    kindly suggest the tonnage required. I intend to buy inverter Acs and my budget is 3 lakhs. At the same time I am looking for low noise , high chilling and least consumption as these Acs will be running more than 14 hrs a day regularly in the hot and humid season of kolkata.Also i am looking for ISEER which is very high.

    Please help as I am in deliema. My personal liking was for sharp but since the company is not marketing the PCI inverter series due to change in management , I do not know what to do.

    Warm Regards

  • yash kumar kori

    Hi Sir,

    My name is Yash from kolkata and i am planning to purchase an Inverter Ac. i would like to inform you that the current temperature here in kolkata is approx 40 Degree on a daily basis in between 11 Am to 6 Pm. My room is of 12*12 feet (Square & Air-tight) Please suggest me that which AC should i purchase so that it can help on electric consumption and can save money on paying on the electric bill. I am planning to invest around 60k on the AC, kindly give your valuable feedback on the same.

    Thank you
    Yash Kori

    • https://www.bijlibachao.com Abhishek Jain

      HI Yash,

      I would strongly suggest that you look at Calculator, FAQ and list of top ACs on this link on our website: http://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      It will help you choose the right size, right star rating and right model/brand of AC for your room.

      You can also look at our database of all ACs available in market on this link: https://www.bijlibachao.com/research/list-air-conditioners-available-indian-market.html

      You can use the filters on the table on this page to filter out models as per your budget.

      As for brand, I would suggest that you look at our perception of various brands on this link:


    • yash kumar kori

      Hi Sir,

      Thank you very much for the quick reply.

      I need your suggestion that among HItachi Daikin Voltas & O General which one should i buy for more energy efficient .
      I have used your calculator and i need 1.5 Ton AC and i am thinking of purchasing Inverter AC.

      Kindly advise me which Brand AC would you suggest as per your experience.

      Thank you
      Yash Kumar Kori

    • https://www.bijlibachao.com Abhishek Jain

      Hi Yash,

      Hitachi has the most energy efficient models. Hitachi Kashikoi 5400, 5300, 5200 models would be most energy efficient amongst all.

      My favourite brand is Daikin. Daikin FTKM50RRV16 would be their (Daikin’s) most energy efficient model.

    • yash kumar kori

      Hi Sir,

      Thank you once again for the quick reply.
      One more suggestion required if you can give is what do you say about O GENERAL “ASGA18JCC – 1.5 Ton” will it be good in terms of energy efficiency.

      Thank you
      Yash Kori

    • https://www.bijlibachao.com Abhishek Jain

      HI Yash,

      It’s EER is 3.51 which is quite good. It would be BEE 4 star rated or border line BEE 5 star rated as per new BEE standards for Inverter ACs. So you can certainly go for it. O General in general is a great brand :).

  • Raj

    Hello Abhishek, Firstly thank you for the wonderful article which helped me to understand the ABC’s of an Air conditioner. After reading entire bijilibachao i have finalised 3 models of AC. Would you please help me in chosing an AC from below:
    1. O General ASGA18FTTA – EER 3.51
    2. Daikin FTKC50NVM — COP : 3.6

    Temperature during summer : 45 max

    Third preference to HItachi as i am hearing negative comments on Service part.
    3. Hitachi Zunoh 5300 or KASHIKOI5400.

    I am looking for 1.5 Ton and 5 star or inverter. Please help me to choose one.

    • https://www.bijlibachao.com Abhishek Jain

      Daikin FTKC would be a good choice for you I think.

    • Raj

      Thank you for the response. I will choose Daikin FTKC then and buy it tomorrow :)

      Also i have one more query regarding the outer unit. My flat is in 2nd floor and as per the construction, we have to
      1. Place the outer unit in balcony where our washing machine was there(3 feet distance between them and make AC fan face away from washing machine and towards outer space)
      2. Place it backside of my bedroom hanging above 2 floors from ground. In this case when ever there is a problem in outdoor unit then the service person has to use some ladder to reach 2 floor height which is difficult may be

      Will the out door unit get any repairs often ? If so then i have to place it in balcony. But if i place in balcony will it damage my washing machine ?

      Please suggest.

    • https://www.bijlibachao.com Abhishek Jain

      Outdoor unit would need regular servicing. It is better to place it at a location where it is accessible.

  • Rajesh

    Hi Abhishek

    what do you think about TRANE ac brand?? can it be compared to leaders like daikin and mitsubishi?????

  • Dominic

    Hello Mr Abhishek,

    I’m looking for a 1 ton inverter AC for my bedroom and based on the comments on this forum. I feel the Daikin inverter AC is the best. I do not want to spend more than 40-45K for the AC. could you please let me know if Daikin is the best and which model. also do we have any other brand that is quiter and more energy efficient than Daikin?

    Other AC that I considered were Carrier and Hitachi

    • https://www.bijlibachao.com Abhishek Jain

      Hi Dominic,

      You should easily be able to get a 1 ton inverter AC in 40-45K. Daikin FTKM or FTKP series (the top two series) from Daikin can come in your budget. Hitachi is on a bit of expensive side while Carrier is not as energy efficient as Daikin.

    • Dominic

      Thanks Abhishek,
      Unfortunately I’m not able to find a dealer who sells these models in my locality and online. What’s the next best model even if I have to compromise a bit on energy efficiency?

    • https://www.bijlibachao.com Abhishek Jain

      Did you try for it on Amazon? I can find a DTKP model on Amazon: http://www.amazon.in/gp/product/B013UCI4L6/ref=as_li_tl?ie=UTF8&camp=3626&creative=24822&creativeASIN=B013UCI4L6&linkCode=as2&tag=bijlbach-21

      Otherwise you may look at BEE 3 or 4 star rated new inverter AC from Voltas. They would be durable, efficient and will fit in your budget as well.

    • Dominic

      Thanks Abhishek,
      The primary seller on Amazon was not delivering ACs to my area. Found a new seller and ordered the AC from them. Thanks a tonnage for the advice and hope this purchase brings me calmness and coolness in my life

    • https://www.bijlibachao.com Abhishek Jain

      Great. Let us know your feedback on your purchase.

  • Prakash

    .I am planning to buy 1.5 ton inverter AC. Daikin FTKP or ATKP is my priority. Which one is best. Waiting for ur feedback.. kindly suggest if there is any other better models in Voltas, LG or Samsung ootherwise I can go with
    Daikin. In Tamil nadu a dealer says FTKP is a failure model….Is it true. Daikin going to stop FTKP in future. What is the difference between FTKP/ATKP/DTKP….

    Wat about FTKC

    Waiting for ur suggestion…

    • https://www.bijlibachao.com Abhishek Jain

      I have not heard that Daikin FTKP is a failure model. They have been selling it for last 3-4 years. If it was failure they would not sell it. The difference between The *TKP models is air filters and features. ATKP and DTKP have more air filters and some extra features. Basic design is the same. And Filters are important if your room remains closed most of the time. Energy consumption and cooling wise all 3 are the same.

      Samsung AR18JV5DAWKNNA would be better than Daikin FTKP while Samsung AR18JV5NBWKNNA and AR18JV5HATQNNA would be equally efficient.

      LG BSA18IMA and BSA18IBE would also be equally efficient.

    • Prakash

      Thanks for your reply. In terms of Quality which one is best LG,Samsung or Daikin.. which brand should I opt for better cooling and Quality. Samsung and LG inverter AC comes with Aluminium condensor. Is it ok.

      I am confused between these brands…

    • https://www.bijlibachao.com Abhishek Jain

      I personally would rate Daikin higher than LG and Samsung. But then it is a very subjective evaluation.

    • Prakash

      Thanks sir.I have booked Daikin AC but FTKP series not available.I was told FTKC series only available.I was told FTKC is a imported model from Thailand. But in Daikin website no such model available…If FTKC series is a imported model it will come under warranty in India
      or it is inofficially imported from Thailand

    • https://www.bijlibachao.com Abhishek Jain

      Daikin FTKC has good efficiency. Slightly better than FTKP and yes it is quite good. You can certainly go for it. It is model from Thailand and thus it is not listed on Daikin India website. You may confirm with the dealer regarding warranty. This option has been suggested to many people by dealers across the country.

  • shankari

    Hi Abhishek,

    Many thanks for the wonderful discussion and I appreciate your knowledge and also sharing your views and help to the community.
    As a person with no knowledge about electronic appliances, I need your help in finalizing my purchase. I need a good brand, a/c with invert-er for power reduction, good stability, long durability, with stabilizer. My budget is 40K.
    I visited Spencers outlet in Hyderabad – Cinepolis, where they offered me a Godrej A/c costing Rs.51K for 38K with inverter, stabilizer and free installation. I have been reading reviews on Godrej A/cs and did not find it convincing and lot of problems. I am unable to decide anything. In one of your comments you have mentioned that you have used Whirlpool and then it was good.
    What should I buy? Is Whirlpool with inverter, etc available ? Kindly help me. Waiting for your reply. I wish to purchase the A/c fast since I have old people at home.
    Thanks and GOD BLESS

  • Narsimlu

    I would like to buy an AC for my bed room sizeof 14 X 12.5 feet. I intend to buy 1.5 ton AC with inverter. Which model do you recommend.

  • Munish Goyal

    Hi Abhishek, I am planning to buy two new invertor Ac. Kindly give your expert comments about Panasonic Invertor ac range. Also is it comparable with O General or mitsubishi brand

    • https://www.bijlibachao.com Abhishek Jain

      Mitsubishi has the most energy efficient Inverter ACs amongst the brands that you have mentioned. If you can go for Mitsubishi then that would be better.

  • Sajal K Basu

    Torn between Carrier Superia or Daikin ATKM (1.5T Inverter), Daikin costs just 1K more, but has its reliability and technological advancements. I own 2 more Carrier ACs (albeit just window).. so a bit bent on Carrier.. also liked the i-follow feature which follows the remote’s sensor

    Do guide me whats the advantage in the Daikin ATKM, specially in terms of Power savings or compressor or copper (anything which will make me buy the Daikin one)

    Carrier is costing around 46K, Daikin 47K

    • https://www.bijlibachao.com Abhishek Jain

      Daikin ATKM is BEE 5 star rated. I would suggest to go for that.

  • ludwig17

    Hi Abhishek,

    Thanks to you and the bijlibachao team for this wonderful site providing valuable information. I am looking at buying three ACs for three rooms in my apartment. I live in an apartment on 4th floor in a 7 floor building, Delhi location and none of the rooms have direct sun facing walls. I have shortlisted below ACs:

    – Hitachi 2T Split Fixed Speed “RAU524IVD aka ZUNOH 5300F” 5 Star (for living room 20’x14′, 600 hours usage per year), Some ‘General’ Stabilizer Copper 5kVA (Dealer is providing ‘General’ make Stabilizer), Has iClean feature
    – Hitachi 1.5T Split Inverter “RAU518AWEA aka KASHIKOI 5200I” 5 Star (for bedroom 14’x10′, 1600 hours usage per year), Some ‘General’ Stabilizer Copper 4kVA, No iClean (only clean indicator)
    – Voltas 1T window “123LYE” 3 Star (for study room 10’x10′, 800 hours usage per year), V-Guard 4kVA. My window slot height is 14.9″ so I can opt for 15″ or lesser height ACs only

    I have below listed questions:

    1. Is my selection appropriate based on quality, service and usage? Please advice if you have any suggestion.
    2. IS the iClean feature worth having (RAU524IVD)? If yes then would it be a better to go for iClean model RAU518IWEA instead of RAU518AWEA for the bedroom?
    3. Is Hitachi Service good? Heard that their service is not as good as quality of their product. Don’t know how much is this true!
    4. Which stabilizer is better – Copper or Aluminium? General or V-Guard? Any suggestion on best available one?
    5. Does Inverter AC RAU518AWEA need a stabilizer? Dealer is saying no need for stabilizer for inverter AC. Power supply fluctuation is not really there at my location but I don’t want to take any chances. Also, does stabilzer take care of surge?

    Many Thanks for your help!


    • https://www.bijlibachao.com Abhishek Jain

      Hi Ludwig,

      Here is my response:

      1) Hitachi and Voltas are good brands. So from a brand perspective the choice is good. I cannot comment on the service because each brand has varying levels of service in different areas, and your local dealers can provide you better insights. As for tonnage and star rating, I would suggest that you use the calculator given on our page to figure out the right size and star rating: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      2) iClean is a good feature. Split ACs have air filters that need regular cleaning else the cooling goes down and energy consumption goes up. You can certainly clean it manually as well by taking out the filters periodically and cleaning them, but iClean does it automatically. So you need not have to remember to clean it.

      3) Your local dealers would be able to suggest if Hitachi has good service in your area or not. I personally own a Hitachi and I have not had any problems with it.

      4) Stabilizer does not have copper or aluminium variants. Copper and Aluminium is for condenser. Just make sure that the stabilizer has a time delay system for protection of air conditioner (typically that feature is not there in regular stabilizers and people make mistake of buying one without the feature). I have mostly seen VGuard and it is good.

      5) Typically inverter ACs do not need stabilizer. Stabiliers with “Thermal Overload Protection” feature do take care of surges. You can use just a surge protector as well. But I don’t think there will be any problem in Delhi. Power supply is privatized and Reliance/Tata provide good quality power. I have a Tata connection in Mumbai and we never face any issues. And most inverter ACs I know of in Mumbai work without stabilizers. So I do not think you need anything.

    • ludwig17

      Many Thanks Abhishek for your response. Now strange thing is that RAU524IVD and RAU518AWEA models are not available with the dealers. Have checked with more than 5 leading dealers in different Delhi markets and none is having these models. They have asked for some time to get back to me about these models’ availability. Any thought!

    • https://www.bijlibachao.com Abhishek Jain

      If you are not in a hurry then I guess you can wait for a few days and check. Or you may consider models from Daikin.

    • ludwig17

      Thanks. Yeah! I can wait for a week or so. My main goal is to buy the best in terms of functions, quality/durability and service. I will be stuck with 3 ACs that I am going to buy for at-least 4-5 years. Isn’t it! So, I can wait. Some dealer said that these are showroom models. If that is the case then I guess only Hitachi can sell them directly to the consumers. Does that happen? Why would a manufaturer do something like that?
      If nothing gets materialized in next one week or so then purhaps I need to think about alternatives. I will consider Daikin for sure. I hope Daikin is as good as Hitachi.

    • https://www.bijlibachao.com Abhishek Jain

      Brands typically sell through a dealer network. I do not think Hitachi would sell directly. Daikin is quite good.

  • Abhishek Jain

    Hi Abhishek,

    I am living in Delhi, and want to purchase a ac with hot and cool option, So I decided to buy “lloyd ls18hc”, but its not available in market. So I want a suggestion from that should I go for ac with cooling option and buy a separate room heater or should go for hot and cold ac.

    If u suggest me “option cooling option and buy a separate room heater” then go for which one in lloyd


    If u suggest me “hot and cold ac” then Please suugest me the model best options

    Note: very much confused please must reply.

    • AKV

      Hi Abhishek,

      You might benefit with the discussion I had above your comment. I have the same requirement and have finally decided Carrier. I do not know much about Lloyd but they are a good brand.


    • https://www.bijlibachao.com Abhishek Jain

      HI Abhishek,

      The best options depend on the amount of money that you are willing to spend. Ideally going for an Inverter Tech Hot and Cold AC is what I mostly suggest to people as they are efficient. Now you are looking at brand Lloyd which makes me understand that you are looking for a budget (cheaper) AC. Now it is difficult to get the “best” AC in a cheaper range. Also your perception of best may differ from my perception of best. I would suggest that you look at the list of all ACs available in market on this link on our website: https://www.bijlibachao.com/research/list-air-conditioners-available-indian-market.html

      The table has filters at the bottom which you can use to narrow down your search. You can select “Hot and Cold” or “Inverter Hot and Cold” in type and then select the brands that you are interested in. Or just put in the price range that you are willing to pay and it will show you the results sorted by Energy Efficiency. My suggestion would be to go for the most energy efficient model (of your brand preference) based on the budget that you have.

      If you want to understand our views on various brands, then you can read it over here:




  • yogesh

    Hi Abhishek,

    As per the calculator on this site, it says 1 ton invertor AC would be good for my 13×11 room with 10 Ft Height. could you please confirm the same so that I can go for 1 ton invertor AC for my room, my city is Pune. and we will use the ac for 8 hours daily for 3 to 4 months. also if you could suggest any good brands that would be helpful to me. how is Panasonic, Hitachi, ?

    thanks in Advance.

    • https://www.bijlibachao.com Abhishek Jain

      Hello Yogesh,

      If the calculator says 1 ton inverter, then I would also say 1 ton inverter (because even I will use the same to confirm :) ). As for brand, I would suggest that you look at our perception of various brands on these two links:



    • Yogesh Pande

      HI Abhishek, Thanks for the reply, I heard that Inverter AC has internal Switching problem as is not successful ? is it the case you think? I am not sure if my question is stupid or right ?

    • https://www.bijlibachao.com Abhishek Jain

      There are no such issues with Inverter ACs. I have been using it successfully for last 2 years now. And my friends have been using it for longer. It saves tremendous amount of electricity.

  • AKV

    Hi Abhishek,

    Thanks for sharing your expertise on ACs.

    I have decided to purchase a 1.5 Ton inverter AC, in addition, Heating and Cooling (H&C) will also be beneficial. I have shortlisted these 5, what do you think?

    Room size 12×10 feet. Two walls and Roof exposed to sun.
    Avg. high temperature of my city: 44 deg. C for 4-5 months.
    Avg. low temperature of my city: 10-11 deg. C for 3-4 months.

    1. Carrier Superia 365 inverter, H&C Price around 51000
    2. Daikin FTXS50FVMA inverter, H&C Price around 55000
    3. General ASGG18LFCD inverter, H&C Price around 63000
    4. Daikin FTKM50QRV16 (Cooling only) Price around 49000
    5. General ASGA18JCC (Cooling only) Price around 58000

    Also, is it “necessary” purchasing a stabilizer?


    • AKV

      Additional data, can you please verify these details? My data might be wrong.

      1. Carrier Superia 365 inv **Noise 49 **Power Consumption 1850 (too high?) **Cooling wattage [not available] **EER 9.46
      2. Daikin FTXS50FVMA **Noise 44 **Power Consumption 1550 **Cooling wattage 5,000 **EER 3.23
      3. General ASGG18LFCD **Noise 26 **Power Consumption 1520 **Cooling wattage 5,200 **EER 3.42
      4. Daikin FTKM50QRV16 **Noise 42 **Power Consumption 1315 **Cooling wattage 5,000 **[can you check EER for this one?]
      5. General ASGA18JCC **Noise 26 **Power Consumption 1480 **Cooling wattage 5,200 **EER 3.51

    • https://www.bijlibachao.com Abhishek Jain

      A machine with Heating and Cooling should be used only if you plan to replace a room heater. If you do not use room heater in winters, then such a machine should not be used. Room heaters are inefficient and replacing them with hot and cold ACs makes a lot of sense.

      Daikin models you have listed are quite efficient and good. So whatever is your choice Hot and Cold or not, the Daikin models you have listed are good.

      It is not necessary to purchase a stabilizer if the power quality in your area is good. Many Daikin models also have a larger input voltage range making them not need a stabilizer.

    • AKV

      Thanks Abhishek.

      Can you please also tell me about the Carrier Superia 365 which is an inverter Hot & Cold A/C. Now I am down to two – Daikin FTXS50FVMA and Carrier Superia 365.

      I can’t find Carriers power consumption.

      They are both good but which one is better than the other?

      Carrier is about ₹ 5000 cheaper than Daikin.


    • https://www.bijlibachao.com Abhishek Jain

      Cannot comment much on Carrier Inverter ACs as the specifications that they have provided do not provide clear information to make a comparison. In general carrier is a good brand. But in this case, I cannot comment without proper specs from the manufacturer.

    • AKV

      Hi Abhishek,

      No problem. I did some more research and finally found full specification of Carrier ACs in the last two pages of the brochure (see link below). It has both power consumption and cooling wattage which is hard to find.


      Brand | Model | Price | Capacity | Invertor | Heating | Noise | Power Consumption | Cooling Wattage | Gas | Compressor Type
      Carrier | Superia 365 Inv | 51,000 | 1.5 | Yes | Yes | 49 | 1552 | 5,100 | R410a | Rotary
      Daikin | FTXS50FVMA | 56,000 | 1.5 | Yes | Yes | 44 | 1550 | 5,000 | R410a | Swing

      I am going with Carrier Superia 365 Inv.


    • https://www.bijlibachao.com Abhishek Jain

      Thanks for sharing. It really helps.

  • Tabrez

    Thank you abhishek your posts and videos have been really helpful keep up the good work. Kudos !!!!

    • https://www.bijlibachao.com Abhishek Jain

      Thanks. Glad that you found them useful.


    I am planning to buy a 3/4 ton AC as per your energy calculator. I want to know, whether the number of persons occupying the room also a factor in deciding the capacity, as we 4 persons sleep in the same room during night. Will this effect the cooling in the room? Please reply

    • https://www.bijlibachao.com Abhishek Jain

      Hello Mr Manoj,

      The calculator assumes 4 people in the room to do the calculation. So it should be fine.

  • Prasad Ranasinghe

    Hi Abhishek, I am planning on buying a General (Fujitsu) 9000 BTU Inverter AC for a small study room in my house…In case, if the compressor fails after the warranty period, will it be possible for me to buy an alternative inverter compressor brand, rather than going for an expensive General Inverter compressor?…I live in Sri Lanka & the General (Fujitsu) ACs that we have here, are coming from China only…Just want to know whether is it compulsory to buy the same brand here OR if it is not, then what are the parameters/factors that I should need to consider in buying an alternative inverter compressor brand…Thank You.

    • https://www.bijlibachao.com Abhishek Jain

      Well every AC is designed keep a specific performance in mind. You may replace it with another compressor, but I am not sure if you will get the same kind of output. There is a lot of engineering that goes in designing a model.

  • Pradeep Gupta

    I wish to know about Hitachi RAU318KWEA 1.5 Invertor AC

  • Davis Parackal

    How can we come to know that sufficient amount of gas filled when we get a service

    • https://www.bijlibachao.com Abhishek Jain

      Every gas type has prescribed pressure value for ACs. R410A has different R22 has different. Once you know the number, just make sure that it is the right pressure that the engineer is keeping while doing service.

  • Bhadra

    Thanks to your site I have been able to zero in on an inverter AC considering the cost of power in my city. I have zeroed in on a 1.5 ton Blue Star, Lloyd, Daikin and Hitachi. Although Mitsubishis are the best they are a bit out of my budget. I am not so sure about whether I should go for a Blue Star or a Daikin. Lloyd I am eliminating because it has a 48 db indoor sound and this tends to increase with use. Could you tell me if Blue Star is a good bet in terms of power saving and service costs, or should I choose a Daikin (cannot understand the difference between FTKM, FTKP, etc.). Daikin now has a FTKH, which is at a Rs 40,000 price point. Blue Star is the only AC I found with a R410 refrigerant and what your video recommends – Blue Fin anti-corrosion protection on condenser.

    • https://www.bijlibachao.com Abhishek Jain

      Daikin FTKM is the most energy efficient BEE 5 star rated AC. Daikin FTKP is BEE 4 star and slighly lesser in energy efficiency. Hitachi Kashikoi 5400 again is BEE 5 star rated and Kashikoi 5300 is 4 star rated. You can go for anyone of them.

    • Bhadra

      Do inverter ACs have BEE 5 Star Rating? Or are they a different class? The Daikin staffer said that FTKH has been launched to target those who are interested in BEE 5 rating air conditioners, but it has inverter technology so you will save electricity at a lower price.

    • https://www.bijlibachao.com Abhishek Jain


      Last year BEE has launched star rating for inverter ACs. However it is not mandatory right now (till end of 2017). So some inverter AC models in market will have BEE star rating but some will not.

      BEE ratings of inverter ACs is very different from those of non inverter ACs. A BEE 3 star rated inverter AC would be equal or more energy efficient than BEE 5 star rated non inverter AC. And BEE 4 and 5 star rated inverter ACs would be far more efficient than BEE 5 star rated non inverter AC.

      FTKH is not very energy efficient inverter AC. If rated on BEE star rating it would be 2 star rated or borderline 3 star rated AC. It may be as energy efficient as BEE 5 star rated non inverter AC. But then there are lot many models in inverter ACs that are more energy efficient than this model. Daikin FTKP series or FTKM would be far more energy efficient that this series.

    • Bhadra

      Local Daikin Solution Plaza has given me a quote of Rs 10,000 for installation. If I purchase an 1.5 ton Daikin FTKM I will be spending Rs 57,000 in all. Apart from this I have to hide the pipes that will be visible in my bedroom. That could cost me another 10,000 for wooden paneling and painting. I wonder if this is all worth the cost. I already have a Window AC and am thinking now whether I should simply replace the AC with another instead of going in for a split.

    • https://www.bijlibachao.com Abhishek Jain

      Ideally it should not cost Rs 10000 for installation unless a) Installation of your outdoor unit is challenging (you may live in high riser and you are on upper floors and you do not have a balcony to easily put outdoor unit d) You are trying to install the outdoor unit at such a place that the length of copper pipe needed is too long and that is costing a lot.

      I have heard of some cases where Daikin model has come with installation kit (without any extra cost), and I have also heard of people paying extra for installation kit. All depends on dealer and the deal you negotiate. But even if you get the installation kit (standard length copper pipes, etc) along with the model, you still need to pay for the labor and brackets (costing about Rs 1500-2000 or so) for installation of any split AC.

      By the way Daikin FTKp which is also efficient may cost about 3-4K less.

    • Bhadra

      I live on the first floor. I suspect local solution plazas of Daikin may not be very trustworthy as they are service providers with a slightly better profile.

    • https://www.bijlibachao.com Abhishek Jain

      I am sure you will find some better dealers who can give you better rates. Because I even heard someone getting Daikin FTKM for 47K (all inclusive).

  • Rizwan Kazi

    sir i am live in surat city. my room size is length 12, breadth 13 and height 10. so which ac is perfect of me ? 1 ton inverter ac is best for me ?

  • Sharique Shaikh

    Hello I was planning for an inverter ac for my living room, my area is 200 Sq ft I am now planning for cassette inverter ac which one would you recommend? Should I go for normal split or cassette ac? And also how much ton and what brand?

  • Kaushik Das

    Hi, I want to buy a 1.5ton Inverter AC in my room. Having said that I don’t have much idea about Stabilizer & Inverter. I don’t have any Stabilizer & Inverter in my home. In summer from 10pm to 1am voltage of the local area fluctuate too much. Although I’ll get an extra meter for my AC but still have doubt that should I buy a stabilizer for my AC? if yes then can a single stabilizer works with multiple electronic appliance (AC, Washing Machine, Computer, refrigerator)? & If I buy an Inverter AC then will it work while Power cut?

    • https://www.bijlibachao.com Abhishek Jain

      Hi Kaushik,

      Power Inverter and Air Conditioner with Inverter are totally different things and should not be confused with each other. By definition an Inverter is one that converts DC (Direct Current) to AC (alternating current). A power inverter has batteries that store electricity and inverter converts DC from battery to AC to be used by appliances. An Air Conditioner with Inverter Technology has a DC Motor and there is a built in inverter (no not the one with batteries) that converts AC to DC and back so that it can be used by the DC motor. You can read more about inverter AC on this link: https://www.bijlibachao.com/air-conditioners/air-conditioners-with-inverter-technology-can-help-save-electricity-ac-india.html

      If you have huge voltage fluctuations then you can buy a stabilizer with surge protection. Make sure that surge protection feature is a must for inverter AC. Surge is sudden increase in voltage due to issues like short circuits.

      It is better to buy separate stabilizer for AC, Refrigerator and Washing Machine. Computer does not need voltage stabilization (it can work even at low voltage).

    • Kaushik Das

      Hi Abhishek, Thanks for your reply. Actually I want to ask you another question. I want to buy an AC of 1.5 Ton as told before but the daily usage of it will be 2-3 hours. So whenever I went to any shop & said about the daily usage they recommends me 3 star Copper machine of any brand. According to them 3 star machine will take less power as my usage is 2-3 hours per day. But 5 star models are more less power efficient than 3star models as mentioned in many website. So please can you please share your thoughts regarding this? which will be more cost efficient for me?

    • https://www.bijlibachao.com Abhishek Jain

      BEE 5 star rated ACs consume less power compared to BEE 3 star. But BEE 5 star rated ACs are expensive as compared to BEE 3 star. Typically the difference is Rs 5000. The choice between the two depends on the amount of electricity you save and the cost of electricity that you pay for. Typically people go for a BEE 5 star rated AC when the savings can pay off the extra investment in about 3 years. And that is why if the usage is less, a lower star rating AC is more economical.

      It is pure economics that comes into play. Otherwise energy efficiency wise, BEE 5 star rated ACs consume less electricity. If you want efficient appliance then go for BEE 5 star rated AC.

  • Shoeb Manure

    Hi Abhishek
    I have 1.5TR BEE 3star and 2TR BEE 3star Split ACs of BLUE STAR . Is it possible to just change the outdoor units with the newer outdoor units having inverter technology so i can save the cooling cost.
    please reply soon

    • https://www.bijlibachao.com Abhishek Jain

      In theory, I think it should be possible. However, I would suggest that you confirm with Blue Star regarding the same.

  • Pavan

    Hi Abhishek, I am in the process of selecting an Split AC for my house in Hyderabad, Based on the calculator and the suggestions given in the forum I want to get the features for my AC, request you to suggest a suitable model. The specifications are :

    1. 1.5Tonne Split AC, BEE 3 Star Rating
    2. With Inverter Technology
    3. With Copper Coils
    4. With Corrosion Protection Technology
    5. Good After Sales service and support in Hyderabad.
    6. Budget : 35000-45000 INR.

    Thanks and Regards,

    Pavan Kumar Yarala

    • https://www.bijlibachao.com Abhishek Jain

      Hi Pavan,

      There are two types of compressor technologies available in market. Inverter and Fixed Speed. BEE star rating is available in both but the standards are very different. BEE 3 star rated inverter technology is highly energy efficient, but getting a BEE 3 star rated 1.5 ton inverter tech model in 35-45K is extremely difficult. You may get Lloyd 1.5 ton inverter ACs which would fit in your budget. Lloyd is a decently good brand and they have copper condenser.

      BEE 3 star rated fixed speed AC is not as energy efficient as inverter tech (inverter tech would be about 40-50% for energy efficient). But you can easily get good BEE 3 star rated fixed speed ACs in your budget. But all depends on your usage.

      What was the output of the calculator? Did it suggest BEE 3 star rated AC (which is fixed speed) or Inverter Tech AC?

    • Pavan

      Hi Abhishek, Thanks for your reply. The calculator suggests 1.5 TR AC in both regular and Inverter technology. I would prefer the one with Inverter technology for energy savings.Also from my visit to a AC store, I found that Panasonic YS-18RKY model has all these features with INR 53,000 price. I am willing to invest one time as it has all the features I am looking for. Please let me know what you think of this choice.


    • https://www.bijlibachao.com Abhishek Jain

      Hi Pavan,

      Panasonic YS-18RKY has COP of 3.16. Although it is not a star rated inverter AC, but if it does get a star rating it would be approx BEE 2 or 3 star. Daikin FTKP would be a better model (more energy efficient) than this at about similar price. Even Sharp’s 1.5 ton AC would be more energy efficient and similar priced.

  • Pingback: Daiken Air Conditioners | cheapcarinsurancefoladies.com()

  • prasanna Rao

    Excellent article about the questions about AC.

  • Kanth V

    Hi Team,

    Any Ac in 30K budget with 5 Star or Inverter model.
    Please suggest for Hyderabad region.

  • disqus_NKVaw47GGa

    Hello Team,

    The selected cooling load of an AC is meeting or more than the calculated cooling load. However, selected air flow for is less than than calculated air flow rate. Can anybody tell what is the effect of this situation.

    • https://www.bijlibachao.com Abhishek Jain

      It should still be able to cool the room as the cooling load is sufficient. You can increase the air circulation by using any external fan (ceiling fan or pedestal fan).

    • disqus_NKVaw47GGa

      Hello Abhishek,

      Thanks for your reply.

      In our case, we can’t be able to provide an external fan for this area. I would like to know how low air flow (i.e. less than 20% from the
      calculated air flow value) affect room thermal comfort & air distribution (i.e.any hot air pockets in room).

      Please suggest whether we have to revise the selection of ac or just ignore the air flow rate parameter. Do air flow rate has any significance while selecting AC.

    • https://www.bijlibachao.com Abhishek Jain

      If the CFM (Air Flow) value is less then it will take more time to cool the room. With higher CFM value the room cools faster. Low CFM value may also leave hot air pockets at points farthest away from the AC (however that will depend on how the AC is installed and how far is the point from the AC). But it is not necessary that the farthest end will not be comfortable. There will be a temperature gradient from closest to farthest distance from AC. If the distance is not too long then even the farthest distance may have thermal comfort. I am not sure how much would 20% less air flow value will impact. But it will just take more time to cool the room with lower air flow value.

  • Kanth V

    Hi Team,

    For Daikin Inverter Model FTKP50PRV16(Indoor) & RKP50PRV16(Outdoor)
    Present Gas pressure was 110psi only while AC operating.

    For gas pressure to be 135psi while AC operating,
    What is the Amount of gas to be filled?
    What is the Approx. cost to fill the Gas as per Hyderabad Market?

    • https://www.bijlibachao.com Abhishek Jain


      We would suggest you to get inputs from Daikin customer service on the same. We will not be able to help you with this.

  • Rajesh Balusa


    I am planning to buy AC for 150 sft room space(Hyderabad). As per calculator showing that I need 1.2 Ton AC. So, I am planning to buy 1.5 ton AC. I got confused with below two models – Hitachi Kashikoi 5400i 1.5 TR – RAU518CWEA and LG BSA18IMA( inverter model). Please help me which one is the best one. I am looking energy saving and more durable. As I know Hitachi service is not good as compared to LG. So, Please help me which is the best model to buy.


    • https://www.bijlibachao.com Abhishek Jain

      Hi Rajesh,

      Hitachi Kashikoi 5400 is the most energy efficient model available in market. It is no 1. And it will be all copper with R410A. Their product quality is better than LG. But then you will have to look at service as well. So with that feedback, I will leave up to you to decide.

    • Rajesh Balusa

      Thanks Abhishek for your reply. I gone through the reviews and saying that Hitachi service is not good. I likes Hitach allot, but worried about service. Is it really Hitachi service is not good.

    • Rajesh Balusa

      And one more thing I got to know that price is differing around 10k(LG is less)

    • https://www.bijlibachao.com Abhishek Jain

      The Hitachi model that you have chosen is top of the line. LG model is good but not the top model. Also LG has PFC which comes slightly cheaper than copper condenser.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Rajesh,

      It varies from place to place. Some people have really good feedback of Hitachi and some have had issues with their service. Your local dealers can provide you the best feedback.

  • vishnu

    Hi Abhishek,

    My budget is 40,000 for A/C. Can I buy reliance reconnect inverter 1.5 ton A/C. Please suggest.

    • https://www.bijlibachao.com Abhishek Jain

      If you have a budget challenge and you want inverter tech AC then I would suggest that you look at Lloyd or Onida better than reconnect.

  • sreeharry


    we finalized on buyin 1.5 Ton ATKM/ATKP series Daikin inverter AC after reading articles n messages here in bijlibachao. But when we went to the dealer, he said it costs around 57000 and said why dont u go for o general if u r spending that much, its better than daikin. the dealer also said that there is no need for the stabilizer if we finalize this daikin model

    Also, i was told by few frds that daikin inverter ac’s that when frequency changes happen, the PCB (not sure if they said the same, but they meant sm crucial part of ac)gets burnt(m a non technical person,.so not sure what they actually meant)..

    Also, we move frequently on transfers. so we cant expect a steady voltage at every house or a city we move to.

    So my questions are as follows:
    1)Do u think that model is a good buy for that price? Are there those many problems with daikin inverter ac?
    2) Is it suggestible to get stabilizer installed though that model doesnt need on?

    3)Can u suggest me any other brand or equivalent 1.5 ton inverter ac?

    Thank u so much in advance for ur help and time

    • https://www.bijlibachao.com Abhishek Jain

      O General does not have any model that is as energy efficient as those Daikin models. Certainly O General as quite robust as they are made out by Fujitsu in Japan. Daikin has started its manufacturing in Rajasthan and that is how they are able to bring down prices of their models. But internationally, Daikin is a better brand than O General. Daikin is the leader of Air Conditioning in Japan and they are pioneers of Inverter Technology Air Conditioners. Also although O General is robust, their energy efficiency ratios as not comparable to those of Daikin and Hitachi (or for that matter Godrej as well). So O General are more robust but not that energy efficient. Depends on what you want.

      As for PCB, it is an electronic component. Will get burnt if you have power surge. It is with every inverter tech AC as inverter tech ACs have electronic components. It is similar to your TV getting burnt in case of short circuit. One way to protect it from getting burnt is to use a surge protector (a device that blocks electricity when there is sudden increase in current). It is similar to protecting your TV or Computer.

      Voltage fluctuations does not damage PCB as much as current surge or corrosion. And yes, PCBs are expensive to replace. All I can say is that I personally have an inverter AC for last 2.5 years and it’s PCB has not failed yet. I live in Mumbai which is humid. Yes we do not have bad power quality, so power surges typically do not happen. But protection from surge is easy (using surge protector). Protection from corrosion has to be inbuilt.

      As for your questions:

      1) FTKM/ATKM/DTKM are the most efficient models from Daikin (and amongst the top in the list). However to invest in that or not depends on your usage of AC. I do not think ATKP should be that expensive as it’s a model that is a level lower in efficiency than ATKM. Choice will depend on how much is your usage of AC.

      2) Ideally inverter ACs are not impacted by Voltage Fluctuations. Power surge is something that can impact it. Daikin has models that have stabilizer free operation.

      3) Equivalent inverter AC would be Hitachi Kashikoi 5400 but that would be equally or more expensive as that is the top of the line AC. If you want something cheaper then you can go for Voltas models that are BEE 3 star rated as per new standards for inverter ACs. They will be less efficient than these models, but will cost about 45-50K. All depends on your usage of AC.

    • sreeharry

      Thanku for ur prompt reply. I went to dealer today and he said there is another thailand model available in daikin inverter ac. Since ftkm are out of stock, he gave us a choice between ftkc( thai made) or ftkp both 1445 power consumption. But thai.made has no eye sensor feature like in ftkp. So we are unavle to decide. Which one do u suggest? Please advice. Thanks

    • https://www.bijlibachao.com Abhishek Jain

      Efficiency levels of FTKP and FTKC look similar. FTKP is a good model, it is next best inverter AC from Daikin after FTKM as far as efficiency is concerned. From EER/COP numbers I can say that it would be at least BEE 4 star rated as per new standards for inverter ACs by BEE. You can go for anyone of them as they look similar.

  • Waruna

    Please help me decide.

    If you had the option, which brand Inverter AC you would pick for Mumbai out of the 3 below? My primary concerns are Energy Savings and Very high Reliability. I’m indifferent about price. Which one is the ideal choice or how would you rank them in order? This is for a bedroom that’s 266 Sqft. AC is mostly for night use.

    Sharp AH-XP24MV (copper condenser ???) (5 yr Compressor warranty)
    Panasonic CS-S24RKH + Econavi + Blue Fin (5 yr Compressor warranty)
    LG 2 Ton AC US-Q246C4A4E/BS-Q246C4A1 ( I may receive 10 year compressor warranty)

    Dont know if i should pick LG due to extended compressor warranty

    • https://www.bijlibachao.com Abhishek Jain

      I am not able to find specs for the LG model. The Panasonic model looks good. Also do check if there is warranty on condenser/evaporator coils as well or not.

    • Waruna

      1 What about Sharp AH-XP24MV? Does it have a copper coil and blue fin condenser? Would you recommend Panasonic over Sharp for a humid climate or they are about equal on reliability and efficiency?

      2. How often compressor fails on an inverter AC? Do they normally fail before 10 years specially on Japanese brands?

    • https://www.bijlibachao.com Abhishek Jain

      I personally have a Panasonic inverter AC in mumbai which is working great for last two and half years. So I would not have any problem recommending Panasonic in Mumbai. For Sharp we have had several good reviews from satisfied users last year. But I have not tested it or have seen it personally. Panasonic for sure mentions about Blue Fin Condenser. Sharp’s website is horrible with no information.

      Compressor should not fail in Inverter AC and any manufacturer should easily be able to give 10 years warranty on compressor. Things that are prone to failure are: 1) Gas leakage in Condenser/Evaporator due to corrosion. 2) In Inverter ACs PCB can get damaged due to power surge or corrosion. Some brands give warranty on Condenser as well (Samsung, LG etc) even when they have Aluminium condenser. No one talks about warranty on PCB.

      Now to give you feedback from users in Mumbai: me and my friends (all living in Powai) who have been using inverter AC for last 3-4 years, have not had problems with inverter AC in general. And they save a whole lot of electricity for sure. In past 2-3 years we have recommended inverter AC to several people from mumbai and I know of a few who have purchased it, but no one ever came back with any complaint.

      To give you an idea: 100% of Japanese market is inverter technology and more than 50% of European market is inverter technology. And Japanese have been using inverter technology for about 10+ years now. In India it started 5-6 years back.

    • Waruna

      Since you recommended Panasonic, I narrowed down to Panasonic CS-S24RKH and CS-S18RKH. My bedroom is 266 sqft and looking for an inverter AC for night use. CS-S18RKH seems to have better EER of 12.2 and max cooling capacity of 20,500 BTU. CS-S24RKH has an EER of 11.3 and a max cooling capacity of 24,200 BTU. Air circulation and BTU difference is small between these two models.

      Which model would be better suited for Mumbai climate and more energy efficient? Price difference is not very significant between these two models. Would CS-S18RKH be a better choice for Mumbai climate for humidity removal and energy efficiency or should I go with CS-S24RKH since it has a slightly higher BTU range although it has a lower EER at rated capacity? Would CS-S24RKH save electricity since it has a higher cooling capacity by achieving the set temperature fast or would CS-S18RKH be a better choice since it can be more effective for humidity removal which would allow me to set a higher temperature in the thermostat?

      I hope you can help me select the best choice between CS-S24RKH and CS-S18RKH from an energy savings perspective. I dont mind the small price difference between the two units.

    • https://www.bijlibachao.com Abhishek Jain

      Where are you getting these models from? They are not listed on Panasonic India website. CS-S24RKH is 1.8 ton model while CS-S18RKH is 1.5 ton model. For night use in Mumbai both of them can work well, but 1.8 ton is safer (will work well during the day as well). Although these models are not certified by BEE on new star ratings for inverter AC in India, just looking at numbers the 1.8 ton model would be about BEE 3 star rated while 1.5 ton model would be BEE 4 star rated (approx).

      Just to be on safer side (as far as cooling is concerned) I would say CS-S24RKH would be better.

  • Edwin

    What is the draw back of using lower capacity AC in a bigger room? I have 320 sq ft room and based on the formula I understand 2 ton AC is inadequate as the compressor will have to run more to make sure temp is maintained and thus increasing power consumption cost.
    But would buying two 1.5 ton ACs (total of 3 ton) not result the same cost since two compressors are required to run?

    • https://www.bijlibachao.com Abhishek Jain

      An undersized AC may not cool the whole room in peak summers day time. It will just provide localized cooling (close to the area where it is installed). The coverage area will depend a lot on its CFM (Air Delivery or fan speed) value. If CFM is high, it will cover a larger area but may not be able to decrease temperature significantly. If CFM is low, it will cover smaller area but will cool that small area significantly.

      From electricity consumption point of view, an undersized AC will certainly consume much less electricity as compared to two ACs.

      If you are thinking of setting up this AC for your living room and you are fine with cooling just the seating area, then I would suggest that you undersize the AC (go for 1 x 2 ton AC). That will be more energy saving than going for 2 x 1.5 ton ACs. Two ACs would be good only if you need to cool the whole space (320 sq ft). Also do check the size of AC needed for your room using the calculator above before making any decision.

    • Waruna

      What if you undersize with an inverter AC with the same ERR as higher capacity inverter AC – do you still save on electricity consumption? Underisized Inverter AC will operate at higher capacity to maintain the same temperature than oversized inverter AC with same ERR. Do you still save electricity in this situation by going with an undersized inverter AC?

    • https://www.bijlibachao.com Abhishek Jain

      A few points to think about:

      1) If your room requires more cooling than the maximum cooling capacity of an inverter AC, then the room will not cool down to 25 degrees. It will cool less (depending on how much you undersize). Typically inverter ACs exceed marketing capacity by about 0.2 ton. So a 1 ton AC can extend to 1.2 ton. But if your room needs 1.5 ton then undersizing will not cool effectively.

      2) The EER of inverter ACs decrease as cooling increases. So if you have two inverter ACs of nominal capacities 1 and 1.5 ton and nominal EER (at marketing capacity) of 4, and if your room needs cooling of 1.2 ton at any given point, then the EER of 1 ton AC would be less than 4 at 1.2 ton whereas EER of 1.5 ton AC would be more than 4 at the same capacity.

      The only benefit of slight undersizing is that you save on initial cost. A 1 ton inverter AC would cost much less compared to 1.5 ton inverter AC. And if your inverter AC has to run at 1.2 ton (peak tonnage) only for some 5% of the days overall in the year, then you are better off buying an undersized 1 ton AC than 1.5 ton.

  • Arkesh

    Hi Experts,
    My room size is 13 X 11 feet but on one side of the wall there is wardrobe unit in the wall which reduces the size of the room to 11 X 11 feet. Do I need to consider the original size of the room or the new size after the wardrobe was installed completely into one side of the wall? Also, please let me know which brand should I go for and for how much capacity (I am confused after looking at lot of different websites with different numbers present on each) ? My usage will be 10-12 hours a day for a period of 4-5 months. I stay in Bangalore and my rooms face west on one side. My budget is not much and I am looking for a robust AC with minimum maintenance, long life, less electricity bill and good after sales support.

  • Chirag

    I am confused between Hitachi 1 ton 5star rating or Hitachi 1 ton Inverter split ac. My usage would be around 8-9 hrs a day for about 6 mnths in a year.
    Please advise.

  • Mitesh Patel

    Hello Team,

    First i take this opportunity to Appreciate your efforts in giving guidance to individuals having no or little knowledge about air conditioning. Keep up the good work.

    I am planning to buy Inverter AC for my bedroom. I have used the calculator provided in this page. The following are the results,


    Select Your City: Baroda

    Enter Length of Room (in ft): 18

    Enter Breadth of Room (in ft): 12

    Enter Height of Room (in ft): 10

    Check this if the ceiling of the room gets direct sunlight from top during the day: Yes

    Check this if West, South or South West walls of the room get direct sunlight during the day: No

    Enter Daily Usage in Hours: 10

    Enter Number of Months in a Year you will use the AC: 6


    Size of Regular AC that you need: 2 ton

    Size of Inverter AC that you need: 2 ton

    Recommended Star Rating (For 3 year payback): Inverter


    The data below is just an assumption. Real values may differ.

    Hourly Units Consumption

    BEE 3 Star BEE 4 Star BEE 5 Star Inverter

    1.61 1.56 1.46 1.25

    Yearly Units Consumption

    BEE 3 Star BEE 4 Star BEE 5 Star Inverter

    2,898.00 2,808.00 2,628.00 2,250.00

    Yearly Electricity Costs

    BEE 3 Star BEE 4 Star BEE 5 Star Inverter

    Rs17,388.00 Rs16,848.00 Rs15,768.00 Rs13,500.00

    I am preferring to buy AC of either Daikin / OGeneral / Mitsubishi / Voltas.

    I would like to know are these brands ok as per my requirements ? Is there any other brand other than i prefer that would satisfy the requirement and give good After Sales services. Please suggest the model no. according to my requirements with price . I would prefer to have copper coil rather than aluminium. AC should have Hot & Cold both function.

    Awaiting for your reply.

    Thanks & Regards

    Mitesh Patel

    • https://www.bijlibachao.com Abhishek Jain

      Hi Mitesh,

      You need a 2 ton inverter AC and almost every brand out there has a 2 ton inverter AC model. Even Daikin, General, Mitsubishi and Voltas have 2 ton inverter AC models. However I cannot comment on the after sales service of any brand in Baroda as we do not have city specific feedback on service from all the brands. One thing I know is that Daikin has a big base in Baroda as they have a manufacturing setup over there. And Daikin in general is a very good brand. However here are a few questions for you:

      1) What is your budget for the AC?
      2) You have mentioned that the usage is only for 6 months, then why do you need a Hot & Cold AC? Hot and Cold is required only if there are extreme winters in your city and you need heating in winter months. And Baroda does not have such climate.
      3) Also between aluminium and copper, the aluminium ones are more energy efficient and less expensive. They are only bad in case you have extreme corrosive environment in your area. In fact many brands with PFC (aluminium) are providing good enough corrosion protection as well as warranty on condenser. Of the brands you have mentioned Daikin, General and MItsubishi have 100% copper models. Voltas has mixed kind of models, some have copper and some are PFC.

    • Mitesh Patel

      Good Morning Abhishek,

      Thanks for your quick reply.

      1. My budget is @ 50K – 70K.
      2. My usage includes 4 months of summer (April to July) & 2 months of Winter. The temp. here in baroda drops to 10 to 7 degrees (in last couple of years).
      3. Is is feasible to go with brand providing copper coil? Can you suggest models of Daikin / O General / Voltas / Blue Star with reference to my requirements.

      Thanks Once again for your reply and guidance.

    • https://www.bijlibachao.com Abhishek Jain

      Hi Mitesh,

      You may look at these models:

      Blue Star HNHW24CBF
      or Voltas 24V EY-W

      Both of these have copper.

    • Mitesh Patel

      Hi Abhishek,

      Thanks for your prompt reply.

      Today i went to inquire abt AC as per my requirements. Dealers said with size of my room and other factors, 1.5 ton ac with 5 star EER ( instead of going for inverted AC).is enough to fulfill cooling requirements. The following are the models which i have opted out for 1.5 Tn 5 star EER.

      1. OGeneral – ASGA18FTTA
      2. Mitshubishi – MSZ-HJ50VA / SRK 20 CLS-6 / SRK-21 CNS 56
      3. Daikin – FTF /DTF Series

      please suggest and provide your comments.


      Mitesh Patel

    • https://www.bijlibachao.com Abhishek Jain

      Hi Mitesh,

      1.5 ton sounds small for 18×12 room. It will not cool the whole room in peak summer day time. It will just provide local cooling (close to the installation area). Also as far as electricity savings are concerned, inverter ACs give far significant electricity savings as compared to BEE 5 star rated fixed speed AC. Dealer’s knowledge seems a bit outdated.

      Also you said you needed a hot and cold AC where as BEE 5 star rated models will be cooling only models. They will not heat the room in winters. Regular hot and cold models (without inverter) are not energy efficient. The brands that you are looking at are all good ones. You can go for anyone of them if you are looking for 5 star rated 1.5 ton AC.

  • Sharique Shaikh

    Hello I was planning for 1.5 ton invertor AC in Mumbai and I am confused between Sharp, LG and Hitachi. Right now I am using 1.5 ton 2 star rating LG Split AC so which one you would recommend as a replacement?

    • https://www.bijlibachao.com Abhishek Jain

      Hitachi Kashikoi series is the most energy efficient currently. They have brought some of their most energy efficient models to India. If your usage is high then Hitachi Kashikoi would be awesome.

    • Waruna

      Is Panasonic econavi with iAutoX good energy efficient inverter AC? Is Panasonic better than LG from any perspective?

    • https://www.bijlibachao.com Abhishek Jain

      I think LG has more energy efficient ACs than Panasonic. However, econavi is a great feature from Panasonic. With the current EER based standard it is difficult to ascertain impact of econavi, but once all brands get their models certified as per the new BEE standards of ISEER, then we can get better understanding of impact of econavi.

  • Kanth V

    Hi Bijili Bachao! Team

    I have Purchased Daikin Inverter Model FTKP50PRV16(Indoor) & RKP50PRV16(Outdoor) in March 2015 in Chennai.
    Its working fine in Chennai. In Chennai am getting 3 to 5 liters of water from outlet.

    Now am shifted to Hyderabad in march. It was installed by Daikin Service personal only. In Hyderabad am getting only 200ml of water from outlet.
    The service personal said that gas pressure was 110psi only while AC operating, also they said it has to be 135psi while AC operating. But its enough now. Said can top-up gas next year summer.

    Am getting nice cooling effect.

    My Doubts:-
    1. Is gas pressure enough or not? if not what is the correct pressure?
    2. Amount of water collected is only 200ml in hyderabad. Why? Any wrong with AC or It’s like that in Hyderabad?
    3. Have top-up Gas? If so up-to what Pressure?

    Kanth V

    • https://www.bijlibachao.com Abhishek Jain


      Ideal gas pressure for R-32 is 135 psi. Water output will depend on humidity in the air. I think Hyderabad is much less humid as compared to Chennai. If pressure is less then you will have to top up gas for better (ideal) operation.

    • Kanth V


  • Sunil Jain

    Hi Abhishek,

    I am planing to buy a inverter split airconditioner for room size 11x10x11 size room. I am residing in Alwar (Rajasthan). could you please suggest for brand & tonnage.

  • Raj

    Hi Team

    I am planning to buy a 2 Ton Split Ac and stay in Faridabad. My preferred brand is Daikain but i do not see any 2 Tonn model listed for them. Secondly, I am confused between the Models listed in your list. Apart from the price range and maybe energy rating, is there any real difference between features among all the models of daikain. Can u suggest the best one from your list of Daikain Inverter type for 1.8 Tonn AC .. Appreciate your support

    • https://www.bijlibachao.com Abhishek Jain

      Daikin FTKM60 would be the best 1.8 ton Inverter AC. It has good filters as well.

  • Sunil Mitra

    Hi, Am planning to add AC to my 1500 sqft retail space. I would need to add 4 2ton ACs for it.Can you suggest me a good ac which helps me to save power bill. Also can you help me out with the power consumption of one ac per hour.

  • Anoop

    Hi, I am planning to buy an 1.5 ton Ac in chennai. I am consfused between Daikin , Carrier superia plus k+ model and the Blue start inverter AC. Which one is suggested as it will be used for 7 months a year with close to 10 hrs a day. Is there a BEE rating for the Outdoor unit of Inverter Ac’s? Blue star claims to have 3* rating for the outdoor unit.

    Personally I was looking at Carrier AC but the Midea brand as part of Carrier makes me think.. Your suggestion are welcome

    Thanks in Advance!!

    • https://www.bijlibachao.com Abhishek Jain

      BEE has started giving star rating for inverter ACs, but it is not mandatory yet. So some brands are getting rated and some are yet to get into the process. It will take 2-3 years for BEE to make it mandatory. However efficiency levels of Inverter ACs are much better than efficiency levels of fixed speed ACs. So you cannot compare a BEE 3 star rated inverter AC to a BEE 3 star rated fixed speed AC.

      I would suggest you to go for Daikin FTKM model. It is the most energy efficient model available. Even if BEE starts rating inverter ACs, this model will get a BEE 5 star rating for inverter ACs.

  • Imthiaz

    Hi, the room size is about 190 Sq ft with 10 ft ceiling height.

    Currently have a 1.5 T split unit of Voltas Vertis Elite (non inverter – 1885 W) which consumes about 8 unit of power a night with the thermostat set to 25 degree C.We desire very mild cooling of not less than 25 degree C. The normal usage is about 6 hrs in the night.

    Will it be of any advantage to go for a smaller capacity inverter unit (say 0.75 ton) as the desired cooling is just about 25 degree C to save on energy cost? Thanks

  • vishal


    I am from Kalyan, Staying on 1st floor in 7 storey building and my bedroom size (in Ft) is L-16 X B-10 X H -11. I daily usage would be 6-8 hrs.
    Please suggest on:

    1. How much ton ac, will i require?
    2. Brand with Longer durability, low noise and Low maintance
    3. With maximum warranty

  • deven jatakiya

    sir, i am from ahmedabad i want to buy 1 or 1.2 ton ac plz suggest me ac in terms of quality, eer and saving of power consumption we have 7 rs./unit here in ahmedabad i will buying ac first time

    • https://www.bijlibachao.com Abhishek Jain

      Hello Mr Jatakiya,

      Would suggest you to use the calculator and list of ACs available on this link to find out right size: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      As far as brands are concerned, Japanese (Daikin, Hitachi, Panasonic, Mitsubishi, Sharp, General) + Carrier + Blue Star are quite good in reliability.

    • deven jatakiya


    • https://www.bijlibachao.com Abhishek Jain

      Carrier and Hitachi would be the best. If you find them expensive then Voltas would be good.