Electricity Saving Tips For Homes And Offices

What is Inverter Technology AC and How it is Different from BEE 5 star Non Inverter AC?

By on May 6, 2017

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. And since 2016, BEE has started give star ratings to inverter technology ACs as well. However, let’s look at what is inverter technology and how is it different from a non inverter BEE 5 star rated ACs.

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.

What is Inverter Air Conditioner?

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.

What’s the difference between Inverter Technology AC and BEE 5 star non inverter AC:

  1. Inverter technology air conditioners are variable speed/ variable tonnage air conditioners and thus operationally they are quite different from regular air conditioners that have single speed compressors and single tonnage.
  2. Inverter technology air conditioners adjust their speed/tonnage depending on heat load of a room. Whereas regular air conditioners do not.
  3. Every room has a different heat load, even if they are of the same size. The heat load depends on various factors as we have listed on our article: Things that impact electricity consumption in air conditioners. To give you an analogy, every human being is different; even then the waist sizes of most trousers available in the market are fixed (leaving the ones with elastic). Inverter Technology AC is just like a trouser with an elastic waist that can adjust to the size. The other benefit is that even if the waist size increases or decreases, the trouser with elastic will adjust accordingly. Regular Air Conditioners are fixed size.
  4. Based on the data on power consumption by BEE, Inverter ACs of BEE 3 star ratings are about 7% more energy efficient than BEE 5 star rated non inverter ACs.
  5. The heat load in a room does not remain constant and it varies from seasons, varies based on number of people, varies between day and night, varies based on climate profiles of your location. To take the same analogy we mentioned above, the waist size increases or decreases with the amount of food one eats or the amount of exercise one does. So as a trouser with elastic waist can work well, an air conditioner with inverter tech can work well.

Power Consumption of Inverter and non inverter air conditioners.

Based on data from BEE in 2017, below is the representative (median) sample of power consumption of Air Conditioners of various tonnage and star ratings:

0.75 ton1 ton1.5 ton2 ton
3 Star Non Inverter62782812351548
5 Star Non Inverter57676011301412
3 Star Inverter55072610771344
4 Star Inverter4996589721208
5 Star Inverter4215578151005
Annual Electricity Consumption (Units or kWh for 1600 hrs) based on data from BEE

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.

Is there a Window AC with inverter technology available in market?

No there is no window Air Conditioner with inverter tech available in market. Will they be available in future? We don’t know.

Are there Star Ratings for Inverter ACs?

In 2016, BEE introduced a new star rating standard for Inverter Technology ACs as well. Currently most models are in BEE 3, 4 and 5 Star rating ranges on BEE. In future (in 2018), BEE plans to merge the star rating standards of inverter and non inverter ACs. To know more about new star rating standards for Inverter ACs, you may read this page on our website: Understand What is ISEER and Star Labeling of Inverter Air Conditioners in India.

If you are looking for most energy efficient inverter ACs, here is the list:

Best Ten Energy Efficient BEE 5 & 4 Star Rated Inverter Air Conditioners in India


Click on a category button below to choose category.

  • Best 1.5 Ton BEE 5 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 1.40 Ton
      • 5.20 ISEER
      • 744 Annual Units (for 1600 hrs)
    • Rank 2
      • 1.50 Ton
      • 5.15 ISEER
      • 793 Annual Units (for 1600 hrs)
    • Rank 3
      • 1.40 Ton
      • 4.90 ISEER
      • 791 Annual Units (for 1600 hrs)
    • Rank 4
      • 1.50 Ton
      • 4.85 ISEER
      • 842 Annual Units (for 1600 hrs)
    • Rank 5
      • 1.50 Ton
      • 4.75 ISEER
      • 839 Annual Units (for 1600 hrs)
    • Rank 6
      • 1.50 Ton
      • 4.74 ISEER
      • 850 Annual Units (for 1600 hrs)
    • Rank 7
      • 1.40 Ton
      • 4.69 ISEER
      • 818 Annual Units (for 1600 hrs)
    • Rank 8
      • 1.50 Ton
      • 4.68 ISEER
      • 884 Annual Units (for 1600 hrs)
    • Rank 9
      • 1.50 Ton
      • 4.66 ISEER
      • 847 Annual Units (for 1600 hrs)
    • Rank 10
      • 1.40 Ton
      • 4.64 ISEER
      • 835 Annual Units (for 1600 hrs)
  • Best 1.0 Ton BEE 5 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 1.00 Ton
      • 5.80 ISEER
      • 483 Annual Units (for 1600 hrs)
    • Rank 2
      • 1.00 Ton
      • 5.75 ISEER
      • 492 Annual Units (for 1600 hrs)
    • Rank 3
      • 1.00 Ton
      • 5.20 ISEER
      • 512 Annual Units (for 1600 hrs)
    • Rank 4
      • 1.00 Ton
      • 4.86 ISEER
      • 560 Annual Units (for 1600 hrs)
    • Rank 5
      • 0.90 Ton
      • 4.80 ISEER
      • 516 Annual Units (for 1600 hrs)
    • Rank 6
    • LG-BSA12PMZD
      • 1.00 Ton
      • 4.74 ISEER
      • 584 Annual Units (for 1600 hrs)
    • Rank 7
      • 1.00 Ton
      • 4.71 ISEER
      • 565 Annual Units (for 1600 hrs)
    • Rank 8
      • 1.00 Ton
      • 4.66 ISEER
      • 592 Annual Units (for 1600 hrs)
    • Rank 9
      • 1.00 Ton
      • 4.61 ISEER
      • 571 Annual Units (for 1600 hrs)
    • Rank 10
      • 0.90 Ton
      • 4.60 ISEER
      • 539 Annual Units (for 1600 hrs)
  • Best 2.0 Ton BEE 5 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 1.90 Ton
      • 4.85 ISEER
      • 1052 Annual Units (for 1600 hrs)
    • Rank 2
      • 2.00 Ton
      • 4.21 ISEER
      • 1288 Annual Units (for 1600 hrs)
  • Best 0.75 Ton BEE 5 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 0.80 Ton
      • 4.71 ISEER
      • 453 Annual Units (for 1600 hrs)
    • Rank 2
      • 0.70 Ton
      • 4.17 ISEER
      • 464 Annual Units (for 1600 hrs)

To know more about BEE Star Rating of Inverter Air Conditioners check this page on our website: Understand What is ISEER and Star Labeling of Inverter Air Conditioners in India

Best Ten Energy Efficient BEE 3 Star Rated Inverter Air Conditioners in India

Click on a category button below to choose category.

  • Best 1.5 Ton BEE 3 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 1.50 Ton
      • 3.99 ISEER
      • 1023 Annual Units (for 1600 hrs)
    • Rank 2
      • 1.50 Ton
      • 3.99 ISEER
      • 1023 Annual Units (for 1600 hrs)
    • Rank 3
      • 1.50 Ton
      • 3.99 ISEER
      • 1023 Annual Units (for 1600 hrs)
    • Rank 4
      • 1.50 Ton
      • 3.95 ISEER
      • 1059 Annual Units (for 1600 hrs)
    • Rank 5
    • LG-JS-Q18NPXA
      • 1.50 Ton
      • 3.86 ISEER
      • 1041 Annual Units (for 1600 hrs)
    • Rank 6
      • 1.40 Ton
      • 3.79 ISEER
      • 982 Annual Units (for 1600 hrs)
    • Rank 7
      • 1.50 Ton
      • 3.77 ISEER
      • 1065 Annual Units (for 1600 hrs)
    • Rank 8
    • VOLTAS-183V EY
      • 1.50 Ton
      • 3.70 ISEER
      • 1066 Annual Units (for 1600 hrs)
    • Rank 9
    • VOLTAS-183V IY
      • 1.50 Ton
      • 3.70 ISEER
      • 1066 Annual Units (for 1600 hrs)
    • Rank 10
    • LG-JS-Q18AUXA
      • 1.50 Ton
      • 3.68 ISEER
      • 1092 Annual Units (for 1600 hrs)
  • Best 1.0 Ton BEE 3 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 1.00 Ton
      • 3.99 ISEER
      • 669 Annual Units (for 1600 hrs)
    • Rank 2
      • 1.00 Ton
      • 3.94 ISEER
      • 692 Annual Units (for 1600 hrs)
    • Rank 3
      • 1.00 Ton
      • 3.90 ISEER
      • 663 Annual Units (for 1600 hrs)
    • Rank 4
      • 1.00 Ton
      • 3.86 ISEER
      • 680 Annual Units (for 1600 hrs)
    • Rank 5
    • LG-JS-Q12PWXA
      • 1.00 Ton
      • 3.86 ISEER
      • 691 Annual Units (for 1600 hrs)
    • Rank 6
    • LG-JS-Q12AUXA
      • 1.00 Ton
      • 3.72 ISEER
      • 729 Annual Units (for 1600 hrs)
    • Rank 7
      • 1.00 Ton
      • 3.70 ISEER
      • 733 Annual Units (for 1600 hrs)
    • Rank 8
      • 1.00 Ton
      • 3.65 ISEER
      • 742 Annual Units (for 1600 hrs)
    • Rank 9
      • 1.00 Ton
      • 3.63 ISEER
      • 731 Annual Units (for 1600 hrs)
    • Rank 10
    • VOLTAS-123V EY
      • 1.00 Ton
      • 3.60 ISEER
      • 731 Annual Units (for 1600 hrs)
  • Best 2.0 Ton BEE 3 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 2.00 Ton
      • 3.99 ISEER
      • 1359 Annual Units (for 1600 hrs)
    • Rank 2
      • 1.90 Ton
      • 3.98 ISEER
      • 1275 Annual Units (for 1600 hrs)
  • Best 0.75 Ton BEE 3 Star Inverter AC (Click To Expand/Minimize)

    • Rank 1
      • 0.80 Ton
      • 3.94 ISEER
      • 536 Annual Units (for 1600 hrs)

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 if the ceiling of the room gets direct sunlight from top during the day.
Check this if West, South or South West walls of the room get direct sunlight during the day.


Please select a city
Size of Air Conditioner that you need:


Yearly Units ConsumptionYearly Electricity CostsApprox Cost of Buying
BEE 3 Star Non inverter
BEE 5 Star Non inverter
BEE 3 Star Inverter
BEE 4 Star Inverter
BEE 5 Star Inverter


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


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I want a 2 ton (actual cap. but not marketing cap.) inverter split ac for my drawing room. My options are Hitachi,Carrier or Lloyed with copper condensers. Hence please suggest one

Abhishek Jain (Mod)

You will get true 2 ton only in Hitachi. You can check Hitachi RMC424EAEA or RMB324IAEA.


Hi Abhishek,

Any insights on the Voltas' All Star Inverter ACs? They seem to be ambiguous in comparison to straight forward ratings of other manufacturers. Is it worth buying?

Abhishek Jain (Mod)

Their specs are certainly quite confusing. They say that All Star Inverter ACs can heat during winters, but then they do not mention the heating capacity of the ACs. From the specs it looks like the ACs are cooling only ACs. Their data for cooling looks good and they have star rated ACs as well. As a brand also Voltas is quite good. But I cannot confirm if they will heat as well as cool. From specs they look like cooling only ACs.


From their TVC and specs, the feature of de-humidification is what strikes me the most. Considering that and the purpose of cooling, can Voltas be invested in?


How are midea and cruise AC, looking for either 5star or inverter for 17×10 room,in Mumbai, usage mid to high.

Abhishek Jain (Mod)

Midea is a chinese company which was purchased by Carrier. They are good but not as good as Carrier (the parent company). Cruise is a small Indian company. They do not have too many models. But if you want to go for them, you can certainly do that. Inverter will be more energy efficient than 5 star.


Dear Abhishek,
I really liked and appreciate your efforts.
Please suggest between Hitachi non inverter RAU518IDU , and Daikin inverter JTKM50. difference in capital cost is 4k. I live in Dadar east, Mumbai. Sea shore around 2 km away. Outdoor unit required to be placed in window grill (i.e. building exterior)

Abhishek Jain (Mod)

Between inverter and non inverter, inverter is always better. So I would suggest Daikin JTKM50. I doubt you will be getting direct winds from Sea if you are 2 kM away.


Hello sir
I am from thoothukudi,tamilnadu.i want to buy a new AC for my home.area for the bedroom is 160 sqfeet.height 11 feet.daily usage would be around 8 hours.top floor(1st floor).my budjet is around 35k .i have some doubts regarding inverter Ac .so before suggesting suitable AC clear my doubts too.my preference was selecting inverter AC but my friend said if inverter AC become fault then it will be difficult to service the AC(mainly inverter circuit) .so he preferred not inverter AC.so village area like us inverter AC suitable ? Spare available would be a problem or not? Please explain me sir .thank you.

Abhishek Jain (Mod)

You can go for a 1.5 ton non inverter AC (because I think getting service in village would certainly be a challenge). What all brands are available in your village? Let me know and I can suggest models from those brands.


So you have said inverter AC are not best for villages .am i correct ?
Maximum all brands available.but seperate store(sales office)only available for blue star.but i am intrested in mitsuibishi ,OG,carrier .mitsuibishi sales offices available in 2 places in our state(tamilnadu).so suggest me best Ac for above conditions (area) .budget 30k to 40k.

Abhishek Jain (Mod)

Inverter tech ACs have newer technology and I am not sure if servicemen in your village would be updated with know how on how to handle them. And that is why I suggested to avoid it. It is not that they will not work in villages. But you should be able to get service on the same as well if needed. And I cannot comment on service (because I do not live there), you will have to ask local dealers about the same. If they can provide service to inverter AC then you may go for inverter AC. Else just to be safe I suggested not to go for inverter AC.

You can look at these:

Carrier Superia 5 Star (Amazon Link: http://amzn.to/2qibtfr , Flipkart Link: http://fkrt.it/hfDQkTuuuN ) .... this would be the best choice

else you can look at:

Mitsubishi Electric MS-HL18VF
Carrier Octra 3 Star (Amazon Link: http://amzn.to/2qhTFRE )
Carrier Superia 3 Star (Amazon Link: http://amzn.to/2qTyxW0 , Flipkart Link: http://fkrt.it/hfQfHTuuuN )


Is it true that if we run split ac for more than 6 hours at a time then only we get benefit of inverter else not.

Abhishek Jain (Mod)

You can get electricity saving from inverter AC even in 1 hour of usage. However, to justify the extra cost of buying an efficient AC, you need to have sufficient usage. That number for sufficient usage varies based on the tariff (cost of electricity).


Hi Abhishek, I just wanted to ask you if there are any upcoming articles you will be publishing anytime in the coming days. Because I enjoy reading your site and I have read all articles I was interested in.

Abhishek Jain (Mod)

We are certainly planning to put more articles soon. Just that summers are a bit hectic because of the AC season and Solar.


Hi Abhishek,

You are doing a great work, helping layman like me, across India, choose correct AC as per his/ her requirement.

I am from Kolkata with hot and very humid summers with even more humid monsoon season.
Want to buy the best AC model. Brand/ model in my radar is Daikin JTKM50, , Bluestar P series inverter AC, Hitachi i5400, Carrier Superia inverter AC, LG dual cool. I am looking for 1.5 tons 5 star rated inverter ac.
Shall be really grateful if you can suggest which one to go for considering the following factors- lowest IDU noise level, low power consumption , colling power, humidity control, durability of electronics and metal component, service backup in Kolkata. 
Planning to use the machine for a longer period so not restricting myself on price.

Thanking in advance


Abhishek Jain (Mod)

Hi Chiranjit,

Daikin JTKM50 and Hitachi Kashikoi 5400i are the most efficient ACs with their efficiency quite close and Blue Star P series being the 3rd best. As far as sound is concerned, they (Daikin, Hitachi and Blue Star models) are all close with Blue Star model slightly on the better side. Humidity control is not there in any AC. They are dehumidify and they all have dry mode to dehumidify. But there is nothing like humidity control. Corrosion protection would be there in Blue Star and Hitachi, but I am not sure of the same for Daikin JTKM50. As for Service, you will have to gather local feedback for the same. I think Blue Star 5CNHW18PAFU (Amazon Link: http://amzn.to/2qsd2e7 ) would be a good choice.


Dear Abhishek , I need 2 tr split ac for relatively large drawing room in Noida . My apartment is allotted for 2 KVA DG power backup . Can you please recommend good split ac suitable for running on power back up? What is generally starting current for 2 tr inverter ac? Price is not a major concern but available power backup and durability of outdoor unit in the NOIDA. Thanks !!


Dear Abhishek, Thanks a lot for your quick response. Can you please clarify on the running current mentioned for 2 tr and 1.8 tr . For 2 tr you mentioned 13.65 amp whereas 1.8 TR it is 7.36 tr. It does not look consistent.
Can you also please confirm that starting current for inverter ac will not exceed the full load current . This will help to make my decision. Many thanks and regards!

Abhishek Jain (Mod)

Hi Uday,

Firstly inverter ACs are variable speed ACs. Which means that they can vary their tonnage. So most 1.5 ton inverter ACs can vary their tonnage between 0.5 to 1.7 ton. So a 1.5 ton inverter AC can also run at 1.7 ton.

Now the energy efficiency of inverter AC is best when it runs at 0.5 ton and worst when it runs at 1.7 ton. The number provided on the specification is energy efficiency at 1.5 ton (nominal capacity).

Similarly a 1.8 ton inverter AC can run between 0.6 ton and 2 ton. And it's electricity consumption is worst when it runs at 2 ton. But the specification mentions lowest, highest and nominal current. Lowest is at lowest tonnage, highest is at highest tonnage and nominal is at marketing tonnage.

Finally, most 2 ton ACs sold in market are actually 1.8 ton ACs. For ACs there is actual tonnage and there is marketing tonnage. A 1.4 ton AC is rounded up and marketed as 1.5 ton AC. A 0.95 ton AC is rounded up and sold as 1 ton. Every AC has different actual tonnage and a marketing tonnage. So only brands like Hitachi, Mitsubishi have "real" 2 ton ACs where their actual tonnage is actually greater than 1.9 ton. Most other brands market 1.7 or 1.8 ton ACs as 2 ton.

Now coming to your question. I picked up the most efficient "marketed" 2 ton AC, which was from blue star. Now that AC can stretch between 0.6 to 2 ton (with 1.8 ton being the nominal capacity). The current at 1.8 ton for that AC is 7.36 Amp. And that at 2 ton is 13.65 Amp. Typically in inverter ACs the current starts from 0, goes to maximum and then stabilizes at the most appropriate that is required for the room (As shown in the diagram above). It will steadily increase from 0 to 13.65 and then settle to a number which is lower than 13.65. But then it will try to go to 13.65.


Thanks indeed. Appreciate your detailed explanation. Regards,Uday

Abhishek Jain (Mod)

Hi Uday,

In general undersizing inverter is not really good because if the AC keeps running at peak capacity, there won't be much electricity savings as the efficiency of inverter AC is not the best at peak capacity. But yes, inverter AC is the best if you want to run an AC with 2 kVA backup. However, the most efficient 2 ton inverter AC Blue Star 5CNHW24PAFU has max running current of 13.65 Amp which at 220 V turns out to be 220x13.65 = about 3 kVA. It's current at 100% capacity of 1.8 ton is 7.36 which would be 220x7.36 = 1612 VA or 1.6 kVA. But I doubt it will be able to run properly with 2 kVA DG Backup.


Which AC to prefer LG or Hitachi for 14"*14"*10" West facing top floor room

Abhishek Jain (Mod)

Hello Anand,

At Bijli Bachao, we suggest this strategy: First find out the right tonnage that you need for you room, because undersized AC may not cool well, and in case of non inverter AC, oversized AC can significantly increase electricity bills. In inverter ACs, slight oversizing is fine. You can use the calculator on this page to get the right tonnage: http://bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

Right tonnage depends on city, room’s location (if it gets direct sunlight on walls/ceiling or not), size of the room and number of people in the room, etc. Usually we assume 4 people in a room to do some calculations. But other parameters are required to be known to calculate the right size. A city like mumbai needs less cooling because temperatures do not go too high. But a city like Delhi needs more cooling because it is too hot in summers. Similarly a room on top floor getting direct sunlight on the roof will need more cooling as compared to a room on lower floors. So I would suggest that you use the calculator on this page to calculate the right tonnage.

After finding the right tonnage, you have to look at your usage of AC in hrs/year. And your budget. Because your usage determines if you need high efficiency AC or not. Secondly we try to suggest the most efficient AC based on a person's requirement (tonnage requirement) and the budget.

Let me know the right tonnage (as per the calculator) and your budget and I can suggest you some models accordingly.


Is daikin ftkm35r a 5star or 3 star inveter ac and what is its price?

Abhishek Jain (Mod)

FTKM35 is 5 star rated inverter AC. It should cost about 38000-40000.


Hi Abhishek,

I am planning to buy an AC for my bedroom and need your suggestions on the capacity and model. Below are the details -

1) City - Hyderabad
2) Floor - 4th floor in a 5 storey building, (i.e. no direct sunlight on ceiling)
3) Sunlight - Mostly a shaded room, 16 sft window towards south
4) Inner Measurements - 11.5 * 11.5 * 8.5 excluding closed wardrobes, 13.5 * 11.5 * 8.5 including wardrobes area
5) False ceiling available
6) Usage -> Majorly summer nights

I have no budget constraints, suggest me the right capacity, and durable models!

Thnaks in advance!

Abhishek Jain (Mod)

Hi Naveed,

I think 1 ton BEE 3 star rated inverter AC would be good for you. You can check these models:

BrandModelAmazon Link

Considering efficiency depreciation after few years of usage, Can I oversize it and go for 1.5 ton inverter AC? What are the durable brands available in this segment?

Abhishek Jain (Mod)

Hi Naveed,

You can look at any of these:

Hitachi RSB318IAEA
Hitachi RSD318EAEA
Hitachi RSH318EAEA (Amazon Link: http://amzn.to/2oKrNrZ )
Panasonic PS18SKY
LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )
LG JS-Q18AUXA (Amazon Link: http://amzn.to/2oMjWqB )
Blue Star 3CNHW18TAFU
Blue Star 3CNHW18NAFU

prashant singh

Dear Abhishek,

Would appreciate your comment on micromax ac - "Micromax 1.2 Ton 3 Star Split AC - White (ACS14ED3CS02WHI, Copper Condenser)". it is available below 20k on flipkart.
What you say about this one.

Abhishek Jain (Mod)

Micromax has just recently got into Air Conditioners. I do not have too much data to make a suggestion on them. Also choice of BEE 3 star AC depends on your usage of AC. If your annual usage is high, then it would not be good to go for BEE 3 star split AC.


Hello Abhishek,

I have recently purchased a 1.6Ton MHI AC along with a 5KVA Servo stabilizer.What should be my wiring thickness for using such as AC and what kind of MCB is needed for the same?

Abhishek Jain (Mod)

MHI usually provides that in the specs: http://www.iaplgroup.com/srk20css-s6_srk25css-s6.php

If you see they have mentioned 2.5 mm2 x 3 cores (including earthing cable)

A 2.55 mm2 wire can carry up to 20 Amp current. So you can go for a Type C MCB with 20Amp rating.


Hi Abhishek,

Need your help again in figuring out a 1 ton ac. One of my relatives need an ac for summer & winter both so he can use it in winter also to warm the room.

One ton ac is require either window or split.
Budget is not an issue.
Corrosion protection is not necessary but if get, that is okay too.

Thank you in advance and you are the best as usual.

Abhishek Jain (Mod)

Hi Prashant,

Normal hot and cold models (fixed speed ones) are not very energy efficient and one may end up spending a lot on electricity bills. But the inverter compressor ones are good. Something like Blue Star 5HNHW12PAFU or Daikin FTHP35 would be really good. Do not go for Window AC.


hi abhishek

i live in mumbai (south) i have a flat on 22nd floor in 24 floor tower my flat is small around 325 sq ft
there is no direct sunlight from window

how much capacity ac should i take and kindly suggest me a good ac which can save power and good cooling and good after sales service (budget no bar) will b purchasing online through website

Abhishek Jain (Mod)

Are you looking to cool the whole of 325 sq ft or one of the rooms in your flat?


cool full room

Abhishek Jain (Mod)

A 2 ton AC would be good for your room. You can look at any of these:

Hitachi RAU524AVD (Amazon Link: http://amzn.to/2n0EHm9 )
Hitachi RAU524IVD (Amazon Link: http://amzn.to/2nKvoUL )
Mitsubishi Electric MS-GL24VF
Mitsubishi Electric MS-GK24VA (Amazon Link: http://amzn.to/2opgxBL )
Blue Star 5HW26AATU


Hi Abhishek. I wanted to ask you what would be the average power consumption per hour for a window AC from the year 2008? Because prior to this month when I did not use AC, my electricity monthly bill was 1700 in 2 BHK with refrigerator, washing machine, three power efficient fans and LEDs. But after I began window AC usage at nights, the bill is near 3600 per month.

Abhishek Jain (Mod)

Hi Ravi,

Depends on tonnage and star rating of the AC. However, star ratings started in the year 2007-2008, so your AC may not have star ratings as well. What is the tonnage of your AC?


Hey Abhishek, you replied to me, yet this thing doesn't show your response. I saw your response in gmail regardless. So you said 1600 watts is the usage of my AC most likely. So, if I switched to a 3 star inverter AC, with same 5 hours or so usage per night, what percentage reduction should I see? I think more than 70% unit reduction, right?

Abhishek Jain (Mod)

A BEE 3 star rated 1 ton inverter AC should consume about 0.4 units per hour.


Hey Abhishek, thank you for the response. it is a 1 ton AC and cost around 12-15k at that time. Yes it does not have star rating.

Abhishek Jain (Mod)

It's power consumption would be about 1600 watts. So assuming 75% cycle time it would be consuming 1600 x 0.75 = 1200 Wh or about 1.2-1.3 units per hour.


Thank you Abhishek. That sounds great. I might buy one of the BEE 3 star rated Inverter ACs. 0.4 units would mean I can use it for longer more hours.

priyanka jaiswal

Hi Abhishek,
I live in Pune (not close to any water body but good amount of monsoon rains) in a flat on 2nd floor of a high rise. The bedroom size is 130 sqft with standard ceiling height. Looking for a split AC to be used for about 4 months (4 hrs in the day and 7 hrs in the night). Seeking your recommendations on tonnage and inverter/ non inverter ac.

Abhishek Jain (Mod)

Hi Priyanka,

What is your budget for this AC?

priyanka jaiswal

cost no bar. But definitely not the premium fancy ones. Reliable service record.

Abhishek Jain (Mod)

You can go for a BEE 3 star rated 1.5 ton inverter AC. You can look at these:

LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )

LG JS-Q18AUXA (Amazon Link: http://amzn.to/2oMjWqB )

Voltas 183V EY (Flipkart Link: http://fkrt.it/4zTJATuuuN )

Blue Star 3CNHW18NAFU

Daikin FTKH50 (Flipkart Link: http://fkrt.it/PsYIxTuuuN )

Any of these would be good.

priyanka jaiswal

Thanks for the prompt reply Abhishek. Counter question: why not a 1 ton inverter AC with 5 star ratings? I was considering the max summer temp in Pune doesnt go beyond 41 C so why not a 1 Ton AC with a 5 star rating?

Abhishek Jain (Mod)

Hi Priyanka,

You can also go for 1 ton inverter AC with BEE 5 star rating. The reason that I had was:

1) Inverter ACs run more efficiently when they run at lower tonnage, so 1.5 ton AC would be more efficient when it runs at lower capacity. So BEE 3 star inverter AC would be more like BEE 4 star + equivalent of 1 ton AC at lower capacity.

2) Somehow at times it is hard for me to convince people in Mumbai Pune to go for 1 ton AC for 120+ sq ft room. People do not realize that heat is not much and they insist on 1.5 ton. But then 1 ton is more than sufficient for 130 sq ft room in pune.

3) Why not 5 star? Because your usage is not very high. I just tried to give you the most likely models I felt that you will be comfortable in buying :). And something that would be energy efficient as well.

1 ton 5 star would also work awesome for you. You can look at these:

1) Daikin JTKM35
2) Hitachi Kashikoi 5400i
3) Blue Star 5CNHW12PAFU (Amazon Link: http://amzn.to/2onV5KU )

I think Blue Star model is quite efficient and quite value for money.



I am looking to buy AC for my 12*10 room.It has big windows on South and West with full exposure to sunlight.
I have done some shop visiting and am confused between inverter and fixed speed.

I am told now a days AC comes with Auto OFF Auto ON tech..

My question is suppose I go to sleep at 11 PM and put AC on Auto OFF mode after 2 hours..so at 1 am the AC will shut down..considering my AC is set at 23 degree.how long will it remain cool ? (room occupied by 2 adults and outside temperature 35-38 degree)

say it remains cool for 1 hour then will it switch on automatically? Is there at all any feature like this in fixed speed AC - or do we need to do it manually ?

If this ON OFF continues all night - then my useage will be 5-6 HOURS a day max for weekdays / and weekend 10 hours - what is a reasonable AC for this purpose?

I am told inveter AC runs like this by sensing surrounding temp.. so basically inverter AC will run for entire 11pm - 6 am but use power in the most optimized way - is this correct ? - which will be a value for money in this case.

I stay in Kolkata suburbs and more or less all brands are having good service coverage - i want to use the AC for 8 9 years minimum - which is a good model for this purpose.

I can afford 45-50000 for this purpose.

Many thanks,

Abhishek Jain (Mod)

Hi Shanti,

Your room would need about 1-1.2 tons of cooling in peak summers. So a 1 ton inverter AC would be good for your needs. And yes these days you get ACs with programmable features where you can set auto on and auto off settings. I am not sure which one would have on-off and back on feature. But in most of them you can set auto on time and auto off time.

The time for which your room remains cool will depend on the thermal insulation of your room. For e.g thick walls will be retain cooling for long and thin would retain them for less time. It you have lot of things in the room then they will need cooling as well as each object adds to heat load. A lot will also depend on the appliances running in the room as each of them will release heat. Also even if there is small space in between the door and the floor, the heat will leak in. So it is very difficult to tell the time for which the cooling will hold.

I am not sure which model will have on-off and on mode.

Looking at your usage I think BEE 3 star inverter AC of 1 ton would be good enough for your usage.

Inverter ACs are variable tonnage ACs and they adjust the tonnage as per the requirement of the room to keep consistent temperature. Every AC works by sensing surrounding temperature (even the fixed speed one). Just that in fixed speed AC the compressor goes off when the temperature is attained and gets back on when the temperature increases. IN case of inverter ACs, the compressor reduces its speed significantly to maintain the temperature consistent. It certainly saves power.

You can look at these ACs:

BrandModelAmazon Link

I stay in Mumbai,kandivli area. My room is 17*10 and ceiling is 9 ft, there is a very small nalla nearby, I am planning to go for Bluestar Bi 3CNHW18NAFU or LG JSQ18AUXA , from your point if view, which one is better?, Also should I plan on non inverter AC, what are the options. (P.S. there's a huge dent to the pocket due to Panasonic AC bought few years ago), so want this one to be energy efficient(less electricity bill) & better in cooling. If possible, kindly suggest quickly, i have almost confirmed the LG JSQ18AUXA.

Abhishek Jain (Mod)

LG JSQ18AUXA would be better in terms of energy efficiency. Small Nalla should not make the environment very corrosive. But just make sure that the ACs with people around you do not suffer frequent leakages. If they do then go for non inverter AC. If they do not then LG JSQ18AUXA would work great.


There a review on Amazon mentioning that it doesn't cool the room quickly even in Himalaya cooling mode, also consumers more electricity and doesn't seem to have horizontal swing, should I be worried as I have already given advance but can change to some other model before it's confirmed.

Abhishek Jain (Mod)

Hi Kp,

A lot depends on how the reviewer sized the AC for his/her room. If the room needs more cooling and you install a smaller inverter AC, it will not cool quickly and also its electricity consumption will be high because the AC will always run at peak capacity at which its efficiency is low. So it could be possible that the reviewer undersized the inverter AC.


So the dealer backed out of the good deal that I was getting on LG jsq18auxa, went for checking out other models, one easier mentioned Loyd inverter ac's have 3year warranty on the whole model including PCB, don't know if it's true or not and 5 users on compressor, I don't think LG gives warrant on PCB, also checked LG jsq18nuxa, how's this one and finally on the higher variant MHI srk20css-s61a, which one would u recommend, also add a few options of yours(both inverter /non inverter) which would give optimum cooling while saving on the electricity consumption.

Abhishek Jain (Mod)

MHI srk20css-s61 is highly energy efficient and a very good AC. If you really want to go for that one then go for it. But it will be expensive. Also I doubt any brand gives warranty on PCB. If it does, then it looks very assuring (although compared to MHI I do not think Lloyd will be exciting).


I know but buying MHI is going way above budget plus the overhead costs, it's just the AC(Indoor & outdoor unit), the rest of the costs will have to be borne by the customer, that's why asked whether there are any other good options in the price range of lg.

Abhishek Jain (Mod)

I think LG is the best value for money brand. They have good efficiency and they are quite reasonable in price as well. However, these Lloyd models are also very energy efficient:

Lloyd LS19I3PI
Lloyd LS19I3FH-O
Lloyd LS19I3FH
Lloyd LS18HI

Just in case you are considering Lloyd.


Not really considering Lloyd, seems dealer didn't know whether the ac had pcb warranty, he just assumed it did. You have given a lot of good suggestions, I have actually started checking info on your website last year onwards, have changed all lighting into led lights, also fans, didn't really expect the climate to be this hot this year. The added expenditure of AC was something I was looking to avoid. But if I am getting one, was looking for it to be light on the pocket in terms of durability, low maintenance and low power consumption and finally zabardast cooling.


Abhisek sir
All inverter Ac mentioned annual power consumption unit but I want to know that in which setting temp. Ac will be satisfy that ?plz clarify me regarding this matter

Abhishek Jain (Mod)

As per BEE schedule the test conditions are:

1) Outdoor Temperature: 35°C DBT and 24°C WBT
2) Indoor Temperature: 27°C DBT and 19°C WBT



Please comment for Hitachi Ace 3200i (rau318eweas) 1.5Ton vs Carrier Superia 365 both are inverter.

Thanks in advance

Abhishek Jain (Mod)

The two are quite different Carrier Superia 365 is a hot and cold AC. Hitachi Ace would be cooling only. By the way Hitachi Ace is an old series from last year. Hitachi does not have it on its website this year. Also Carrier does not give much information on EER or ISEER of the models, so it is quite difficult to comment.


Pls give your suggestions on below

Onida 1.5 Ton 3 Star Inverter Split AC (Copper, INV18TDN, White)

Abhishek Jain (Mod)

our budget is 40-45K and you can get better models that this in your budget. In fact LG models would cost less than 40K and would be better than this one.


Thank you for the reply Abhishek.

I am Staying in Chennai. top floor sulight will fall on roof as well as west side. Room size 10*13*10. So Based on your calculator i decided to go for 1.5ton inverter AC.

Kindly help me to get good EER or ISEER Models. I need 1.5 ton Inverter with Copper Condenser. And my budget is Max 40000 to 45000.

Thanks in Advance!!

Abhishek Jain (Mod)

Hi Dilip,

You can look at any of these:

Hitachi RSH318EAEA (Amazon Link: http://amzn.to/2oDyR7E )
Blue Star 3CNHW18TAFU
LG JS-Q18AUXA (Amazon Link: http://amzn.to/2rpKteZ )
LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )
Voltas 183V EY (Flipkart Link: http://fkrt.it/4zTJATuuuN )
Blue Star 3CNHW18NAFU

These are all copper condenser models with high ISEER.


I bought Sharp inverter AC in 2013 and it has worked flawlessly till date. Bought 2nd inverter AC - Daikin FTKP71 last year in March and its PCB has been changed thrice in the last 13 months. It is working fine now but unfortunately Daikin is hesitant to sign AMC. I guess they themselves are not confident about the reliability & ruggedness of their inverter ACs.


I am looking for a suggestion for AC. Room is 14 feet x 12 feet. height is around 9-10 feet. Part of the room is facing west and south and have a window on west side.
can you suggest me few options that we energy efficient?

btw, excellent posts on ACs and very good elucidation of concepts for layman understanding. thank you and great work bro.!

Abhishek Jain (Mod)

Hi Sriram,

The tonnage depends on the city as well along with room's location (top floor, lower floor, west facing, east facing, etc). I would suggest that you use the calculator on this page to calculate the right size. Let me know the size that the calculator suggests and your budget and I can recommend you some energy efficient models.


Not everybody buys a split AC. Your site should also give insights on window ACs and the details

Abhishek Jain (Mod)

Hi Sunil,

We do have details on window ACs:

Top Ten list: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html


But then Window ACs are outdated because of a few reasons:

1) There is a lot of flexibility in design and adding features in split ACs so most manufacturers have significantly reduced their window AC models. So the choices are less.

2) The efficiency of window ACs have not improved over years and so you will not find very many energy efficient (electricity saving) models in window ACs. In fact the only tonnage where there are a few models is 1.5 ton. None of 1 Ton or 2 Ton models are energy efficient. Even in 1.5 ton, there are hardly 4-5 models that are good.

3) Currently BEE ratings of window ACs is one level lower than split ACs. So BEE 5 star window AC is similar to BEE 4 star split AC in energy efficiency. Once unified ratings kicks-in in 2018 (for all kinds of split ACs - inverter and non inverter), window ACs will be left far behind in terms of technology and efficiency.


Please suggest me AC for my 10*12 Room(no direct sun contact), Ground floor and i live in Delhi. should i go for 1 ton or 1.5 ton ? which company is best and my budget is upto 50k.
and what is 5D DC Motor technology in Voltas inverter AC ? and how much is the EER of this AC
Voltas 1.5 Ton Inverter Split AC - White (18V DY)

Abhishek Jain (Mod)

Hi Sachin,

A 1 ton inverter AC would be good enough for your 120 sq ft room if there is no direct sun contact. In a budget of 50K you can get the most efficient inverter ACs of 1 ton. You can get any of these BEE 5 star rated inverter AC in a budget of 50K:

BrandModelAmazon LinkFlipkart Link
GODREJGSC 12 GIG 5 DGOG http://fkrt.it/W0XaU!NNNN
GODREJGSC 12 GIA 5 AWOGhttp://amzn.to/2qn9Z7w 

18V DY would not be a BEE star rated inverter AC because Voltas models with BEE star rating have numbers like 183V DY (For 3 star) or 185V DY (for 5 star). This looks like an old model from Voltas. Their latest models have 183 or 185 in the number. I would not suggest you to go for this one.


thanks for your feedback.. can you please suggest me in 1.5 ton also ?

Abhishek Jain (Mod)

These 1.5 ton ACs will be awesome in your budget:

BrandModelAmazon LinkFlipkart Link

I am moving to a high rise apartment which is about 500 metres from the sea. Being on the higher floor it's pretty windy which I assume will be salty air.
I was looking at inverter ACs, refrigerator and washing machine for their energy efficiency but after reading some of your comments that inverter is not advisable for corrosive areas(i assume this would include salty sea air too) I am a bit confused in terms of decision making.
1) Would you advise AC to be direct model since there would be an outdoor component for the split unit? If so what level of guarantee/warranty should I look for for the various elements of the AC?
2) Since Refrigerator/Washing machine while not having any of it's component sit outdoor will still be exposed to some amount of salty air should I look stop thinking of inverter models?

While energy efficiency both in terms of environment and personal expense matters so does cost of acquisition and maintenance.

Would appreciate your inputs. Am sure I will have one or two follow up questions too.


Abhishek Jain (Mod)

Hi Mahi,

Here is my response:

1) As far as AC is concerned, I would suggest you to go for a regular BEE 5 star rated split AC with blue fin condenser (corrosion protection). Blue Star, Hitachi, Panasonic would be the best brands that will work for you. As far as warranty is concerned, you will get the longest warranty in LG/Samsung (5 years on condenser), but I would still suggest going for Blue Fin Copper condenser even if it has low warranty.

2) Refrigerator and Washing Machine should not have a problem because they will not face salty air constantly. You can go for inverter models in them.


Hi Abhishek,

My brother recently bough Voltas 185zyja..

I am too planning to buy an AC -
1) top floor 3rd - south west room- direct sunlight all day long
2)50 meters from River- full exposed to moisture(not sure if thats at all a deciding factor considering corrosion)
3)useage will be 5 hours max during night in summer(6/7 months)

1)My brother bought mid may but in the box it was marked month of manufacture Nov 2016 - how do i know the month of manufacture from model number-
i want to buy latest model of 2017.. or do i need to inspect the packaging label only ?

2)is it true that inverter AC s will rule post 2018/19..and spare parts service will become headcahe after 2 3 years for normal fixed speed AC?

3)Visited a very reputed dealer chain who offered huge discount on whirlpool fantasia inverter ac(marked price was 46k) offered was 36k with 10 years compressor

3)daikin/carrier/hitachi comes with 5 yrs warranty on compressor- big price different compared to whirlpool - something fishy in the offered whirlpool ?

4)what should i buy ?

Just do not want to drain my hard earned money - looking for suggestions please..

Abhishek Jain (Mod)

Hi Sudipto,

Here is my response:

1) Voltas does not use manufacturing year in the model number. So you will have to look at the packaging label to see the year. There is no other way to tell the same.

2) Once new BEE star rating kicks in then most BEE 5,4 and 3 star rated models will be Inverter Tech. Not that 100% market will be inverter tech. Normal ACs will still sell. So I do not think spare parts and service will be headache after 2-3 years. In fact in your case I would say that Fixed Speed AC would be better as you are close to a river. Check with your neighbors if they have frequent breakdown of ACs and if they need to refill the gas frequently in their ACs. If yes, then the environment is corrosive and it will be better to avoid inverter AC.

3) There is nothing fishy in whirlpool offer. They are just trying to be competitive. LG and Samsung also have models in 35-40K range. Voltas also has models in 35-40K range. And any and every brand can easily give 10 years warranty on inverter compressor. The real challenge in corrosive environment is with the condenser and PCB for inverter ACs.

4) What should you buy --- well depends, what is your budget for this AC? Your usage is not very high and a BEE 5 star rated non inverter AC would also work for you. Go for Blue Star or Panasonic as you are close to river. Let me know your budget and I can suggest you some models.


Thanks for your feedback..My budget is around 40k .. strechable max 45k (provided the models are running well in market and provides me peace of mind for 7/8 years).

Abhishek Jain (Mod)

Hi Sudipto,

Any of these would be really good for you:

Blue Star 5HW18SBTU or 5HW18ZBRTU or 5HW18ZBWTU

Hitachi RAU518AVD (Amazon Link: http://amzn.to/2nbzNy4 , Flipkart Link: http://fkrt.it/h9Nl1TuuuN )

Hitachi RAU518HWDD (Amazon Link: http://amzn.to/2mL4JK1 , Flipkart Link: http://fkrt.it/RE!cs!NNNN )

Daikin DTF50 (Amazon Link: http://amzn.to/2nbC6Bl , Flipkart Link: http://fkrt.it/hlU!DTuuuN ) or ATF50 or FTF50.


lot of thanks


Abhisek sir
I want to know about difference between LG inverter 1.5 ton model ( LG js q18pwxa & LG js q18nuxa ) which one is better copper model

Abhishek Jain (Mod)

Hi Soumen,

LG JS-Q18NUXA would be copper condenser (confirm with LG on that because I heard that only AU, SU and TU models are copper, but in general their models with U in the name are copper). PWXA would not be copper.


I'm planning to buy an ac. Which one is better in terms of reliability/components quality. Hitachi Kashikoi 5400i 1.5TR or Daikin JTKM50SRV16 1.5TR (shortlisted). Also what is your opinion on samsung new inverter ac(s) providing 5yrs on their custom design condenser, 10yrs on compressor, 8 pole digital inverter ect. All this of any good or just a normal marketing hype from samsung. Thank you.

Abhishek Jain (Mod)

In terms of reliability and durability I think Daikin and Hitachi would be better than Samsung. The two models you have selected are highly energy efficient as well. We have heard some complaints about customer service of Hitachi so please confirm with people and dealers in your area about service of Hitachi over there. But I think Daikin JTKM50 would be the best choice.


Super Thanks :)


Hi Abhishek,

I am in dilemma that which one is better of these two models.

Only available in reliance digital
Reconnect RHSAB1507 INR 34490/- copper condenser with 2yr comprehensive warranty and 5yr on compressor. This one having high EER
SAMSUNG AR18MV3HETQ INR 37020/- alloy/aluminium condenser with 1yr comprehensive warranty and 10yr on compressor and 5 yr on condenser

I think Reconnect RHSAB1507 is better, what do you say?

Abhishek Jain (Mod)

Hi Manish,

It truly is a dilemma :) and a difficult question I must say. As a brand I would say that Samsung is much better brand. As for Reconnect (a Reliance Digital brand), they are not manufacturers, they are retailers. Many retailers have started importing products from China and rebranding them and selling them in India. Not that chinese products are bad. Interestingly 100% of chinese market is copper market, so you only get ACs with copper condenser in China. I am not confident of their durability and derating factor. The efficiency is certainly high which is what makes it interesting. And that is why it will be difficult for me to comment as to which is a better product.


One more option added to existing dialemma :(
Sansui 1.5 Ton Inverter (3 Star) Split AC - White SS4C54.WS1-CM, Copper Condenser - 29500/- only with 1yr full and 5yr compressor warranty.


If i want to go for Samsung then which one is better SAMSUNG AR18MV3HLWK(on flipkart) OR SAMSUNG( AR18MV3HETQ(reliance digital) with almost same price?
Please also highlight the key differneces. And thanks for your great support..

Abhishek Jain (Mod)

I would say Samsung is a much better brand than Sansui. And energy efficiency of Samsung BEE 3 star inverter ACs is also decent. Samsung AR18MV3HLWK is an old model and it does not have the same kind of features (especially the voltage protection feature) as in the new ones like AR18MV3HETQ. I would say among all 3 buying Samsung AR18MV3HETQ from reliance digital would be a good choice.


Hi Abhishek,

I am not able to find any detail of AR18MV3HETQ online, so also not able to see any review or feedback about this model. Is this same as AR18MV3HETS?

Although I don't hear mostly positive feedback for Samsung service/support in my area(Noida). I have to finalize it by Saturday.

And if we compare Reconnect and Sansui, which one will win by product and brand wise both?

Abhishek Jain (Mod)

AR18MV3HETQ is similar to AR18MV3HETS with just a basic patter change on the indoor unit.

Between Reconnect and Sansui I would say Sansui.


Thanks for your great reply :)

Is there any better option available for AR18MV3HETQ right now (in inverter in the same budget)?

Abhishek Jain (Mod)

The LG models have better efficiency and some of them have high voltage range of 90V-450V as well. You can check these:

LG JS-Q18ATXD (Amazon Link: http://amzn.to/2plxzkK )

LG JS-Q18AFXD (Amazon Link: http://amzn.to/2oA2VBg ) similar model with different design

LG JS-Q18CPXD (Amazon Link: http://amzn.to/2oA7Ban ) ... this is an Amazon only product and I doubt you will get this in market.

LG JS-Q18NPXA (Amazon Link: http://amzn.to/2oA6Nm5 )

LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )

LG JS-Q18AUXA (Amazon Link: http://amzn.to/2oMjWqB )


So LG JS-Q18ATXD is better than Samsung AR18MV3HETQ right? But reliance digital guy tells me that this Samsung ac has faster cooling and convertible to 1 ton(I'm single user mode). Please take me out of this confusion...

Abhishek Jain (Mod)

Hi Manish,

Speed of cooling depends on the cooling capacity of the AC. The nominal cooling capacity of LG JS-Q18ATXD is 5187 watts (source: http://www.lg.com/in/split-ac/lg-JS-Q18ATXD ) and that of Samsung AR18MV3HETQ is 5000 watts (source: http://www.samsung.com/in/air-conditioners/split-ac-ar18mv3hetsnna/ ) ..... so I do not think LG will cool slower. In fact it should cool faster.

Most inverter ACs have options to reduce the speed. So you can alter it to 60% or 80% capacity (which should be similar to single user mode). But I am not sure if the LG model will have it. Energy efficiency of the LG model is better for sure.


ABHISHEK SIR , My home requires 1 ton split inverter Ac according to calculation but if I put 1.5 ton inverter ac inplace of 1 ton for future planning .My Electric consumption will be now same as 1 ton or more. It's urgent kindly reply me soon.i want to buy LG brand inverter model

Abhishek Jain (Mod)

LG models are great. They have models with really good voltage protection and the dual inverter ACs are very quite as well. So you can certainly go for LG Dual Inverter AC model.


ABHISHEK SIR , My home requires 1 ton split inverter Ac according to calculation but if I put 1.5 ton inverter ac inplace of 1 ton for future planning .My Electric consumption will be now same as 1 ton or more. It's urgent kindly reply me soon.

Abhishek Jain (Mod)

Hi Soumen,

Oversizing is not bad in inverter ACs as they can as just their tonnage based on the requirement of the room. And energy efficiency of inverter ACs is better at lower capacity. So you can go for 1.5 ton inverter AC.


I am asking about power consumption (electric Bill).my Office size is 10×12×8 ,calculater shows 1 ton inverter ac but if I purchase 1.5 ton inverter ac instead of 1 ton My monthly electric Bill comes as like as 1 ton or more ? Which model of LG (copper condenser) I will buy beyond 40k according to your suggestion?

Abhishek Jain (Mod)

Your electricity bill will be less as compared to 1 ton inverter AC if you go for 1.5 ton inverter AC. These two are copper condenser models in LG:

LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )

LG JS-Q18AUXA (Amazon Link: http://amzn.to/2oMjWqB )


Hi Abhishek,

I have plans to buy Mitshubishi split AC.Do Mitshubishi Heavy Industries(MHI) Split unit come with blue fin condensers?Or are they regular condensers?

Abhishek Jain (Mod)

They do not mention anything in the specifications, so I am not 100% sure that they come with Blue Fin or not. But they are 100% copper.


I dont not live near the sea.So will it be disadvantageous if i go for non blue fin condenser in the long run?Will the Condenser get corroded due to heat and water in non corrosive environment to which it is exposed?

Abhishek Jain (Mod)

In a non corrosive environment even Aluminium condenser is not bad. I have personally used an AC with aluminium condenser for 8 long years without any problems (that too in Mumbai - away from the sea). So non blue fin will also work great.


Dear Abhishek, in your whole list of recommended AC's for energy efficiency, there is no mention about any of ac which are from Mitsubishi Heavy duty. Are they not energy efficient? They claim for being 5 point multi port Refrigerant Injection in Coil. Please comment on it. Thanks

Abhishek Jain (Mod)

The list above only contains the models that are BEE star rated (or certified by Government of India as energy efficient). BEE star rating is not mandatory for Inverter Technology ACs currently, but many of the top brands (Daikin, Hitachi, Blue Star, LG, Samsung, Voltas, Godrej, Panasonic, etc) have got their models rated because people ask for BEE star rating. But Mitsubishi Heavy has not yet got its inverter ACs rated on BEE star rating. They will have to eventually next year when BEE star rating becomes mandatory for Inverter ACs as well. But then our list is based only on data from BEE and thus MHI does not appear in it.

As for 5 point multi port refrigerant injection, I would say I would only look at few things while comparing ACs: 1) Cooling capacity (at what rate an AC can remove heat from the room) 2) Power consumption (how much electricity does it consume to remove that heat) 3) And may be look at Air Flow rate because long air flow can help cool a larger space. But then everything else like this technology should show up in the cooling capacity. They may inject refrigerant in evaporator from one point or multiple point, as long as it cools well, the user of the AC is happy. So I would look at cooling capacity of the AC. The biggest plus that MHI has is their long air flow which helps in covering a larger area.


Hi Abhishek,
You have been extremely helpful in your suggestions and recommendations. I strongly believe that this must be helping many.

I would also be highly grateful to you in advising me in finalizing my purchase.

I live close to Ganga(less than a km). Electricity is a problem here so want to use my 1.5kwa solar inverter. Which AC would you suggest. Need either 1 ton or 1.5 ton ac. I have already considered other points from your recommendations and suggestions.
Thank you!
You are the best.

Abhishek Jain (Mod)

Hi Prashant,

Your problem is a bit tricky. Firstly, inverter tech ACs are the best if you want to run them on solar. But then you live close to Ganga and if your environment is corrosive, then Inverter Tech may not be a good solution as PCBs can fail in corrosive environment in Inverter Tech ACs. So you either run AC on Solar with inverter tech, or do not run it when there is no electricity.

Secondly, this approach of selecting either 1 ton or 1.5 ton is not correct. It is very important to get the right sized AC for right electricity consumption. I would suggest that you use the calculator on this page to calculate the right size. Once you are done selecting the right tonnage, let me know your budget, tonnage required, and also if you want to go for inverter tech AC or not, then I can recommend you some models.


Thank you Abhishek,

My budget is aprox 35k - 40k, tonnage required is 1 ton and would prefer inverter tech AC.

Also, request you to suggest how to find in general if my area environment is corrosive.

Abhishek Jain (Mod)

Hi Prashant,

You can get any of these ACs in your budget (in decreasing order of preference):

BrandModelAmazon LinkFlipkart Link
LGBSA12MAYD http://fkrt.it/8~8VWTuuuN

Usually any place located close to a water body (sea, river, lake or nalla) or close to a chemical factory tends to be corrosive. Check with your neighbors if they face regular gas leakage (if they use an AC). If they do then going for fixed speed 5 star AC would be better.

Prashant Singh

Dear Abhishek,

You are amazing!
Thanks a ton for guiding me purchasing a right product for my needs.

I just liked and followed your page (bijlibacho) on facebook. I will again get in touch with you for a help if needed in future. Please keep helping people. Good luck!


I am planning to buy Carrier Superia 4i (CACI18SU4I1) - 4 star inverter AC. I heard Carrier also comes under premium brands. Is it true? How good is this AC?

Abhishek Jain (Mod)

Hi Pradeep,

Carrier is certainly a premium brand and this AC is quite good. You can certainly go for it.


I always like your promptness Abhishek. You helped me in deciding on my Bosch washing machine purchase as well.

I have a follow up question though. Premium you mean, this can be comparable to Daikin, Hitachi etc. or just Samsung, LGs..

Abhishek Jain (Mod)

Hi Pradeep,

Carrier is very much in the league of Daikin and Hitachi. It is the first company that started the concept of "Air Conditioning". Willis Carrier the inventor of air conditioning started "Carrier" in US long time back. They are certainly premium.


we intend to purchase a 1.5T AC for home in Delhi. the home is in an area that has comparatively much less air pollution. we were considering inverter AC considering the energy efficiency aspect as the AC would run for 7=8 hrs at night and 1=2 hrs in daytime for around 6 months a year. Some technicians have however cautioned about the very high PCB repair costs for such ACs. could you please guide in this regard. also suggest 3-4 ACs both inverter as well as non-inverter split in the range of 35000 -45000. Fancy features, brand value is not a requirement, but durability and efficiency is.

Abhishek Jain (Mod)

Hello Mr Arvind,

PCB usually get damaged due to two reasons: 1) Power Surges 2) Corrosion. As for power surges, there is protection available. You can either use a surge protector or voltage stabilizer with thermal overload protection. Or to go for an AC that can handle big voltage range (Samsung and LG have models that can work between 90V and 450V). But then preventing any metal from corrosion is difficult. I have not seen any brand that provides corrosion protection for PCB. One can spray protective coating for the PCB, but then again it will not last long if the corrosion levels are high. So usually we do not recommend people to go for inverter AC is the corrosion levels are high. Here are some ACs that you can look at:

Inverter ACs:

DAIKIN FTKP50 (Amazon Link: http://amzn.to/2nkUble ,Flipkart Link: http://fkrt.it/ICT3k!NNNN )
HITACHI RSH318EAEA (Amazon Link: http://amzn.to/2oDyR7E )
BLUESTAR 3CNHW18CAFU (Amazon Link: http://amzn.to/2nkNhwy )
Panasonic PS18SKY
LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )

Non Inverter ACs:

Godrej GSC 18 FG 8 MOG (Amazon Link: http://amzn.to/2nbG0tI , Flipkart Link: http://fkrt.it/RWFQc!NNNN )

Blue Star 5HW18SBTU or 5HW18ZBRTU or 5HW18ZBWTU

Hitachi RAU518AVD (Amazon Link: http://amzn.to/2nbzNy4 , Flipkart Link: http://fkrt.it/h9Nl1TuuuN )

Hitachi RAU518HWDD (Amazon Link: http://amzn.to/2mL4JK1 , Flipkart Link: http://fkrt.it/RE!cs!NNNN )

Daikin DTF50 (Amazon Link: http://amzn.to/2nbC6Bl , Flipkart Link: http://fkrt.it/hlU!DTuuuN ) or ATF50 or FTF50.


Following blindly the rule for AC capacity selection is so wrong. In Coimbatore rural side where temperature goes 36c these days and nights are pleasant at 25-26c, i still went with 1 ton for my requirement of 9x11x10 feet room(LBH), terrace receiving sunlight and east window 20 sq feet.

The panasonic 1 ton 3 star non-inverter ac i installed is having frequent cycles- like 3 minutes on, 5 minutes off when i keep the temperature at 26c. Not good for the life of internal parts, i guess.

Abhishek Jain (Mod)

That is true. Tonnage depends a lot on heat load and if heat load is less, higher capacity will result in short cycles. It is not good for energy efficiency.

Ambalal M Patil

Very good information. My all daughts are

Geeta Mahadevan

Thanks Abhishek for the precise answer. You cleared my long standing confusion with such a clear answer.
I dont have a rigid budget but would not like to spend for features i am not likely to use. And a big no to Hitachi, please. Can you suggest a 1.5 T split ac for my bedroom 10x16 ft, no sun facing wall. One that requires minimum or no maintenance on regular 8 hr use at night. Its difficult for me to reach up to the ID to clean the filter. Do self cleaning filters really work?
Thanks. Geeta

Abhishek Jain (Mod)

Your environment is corrosive and I think Blue Star, Panasonic and Hitachi have the best corrosion protection features. If you do not want Hitachi then BlueStar or Panasonic would be good choice. Self Cleaning does work, but it is still good if you take an AMC for the AC and get regular cleaning and maintenance done. You can look at these ACs:

BrandModelAmazon Link

Out of these Panasonic model has highest cooling capacity, although it is slightly lower in terms of energy efficiency, but still these are all above 3.6 EER which would be good. The three blue star models have almost the same specs, just that the color of the indoor unit varies.

Geeta Mahadevan

Thanks, Abhishek.
My experience with Hitachi has been very, very bad. One of the window ac malfuntioned from day one. After the first season, its panel had to be changed and the other one was "full of holes" and the coils needed to be replaced and gas filled at a cost of 9000/- according to the Hitachi engineer. Many of my friends also have had bad experiences with Hitachi. Their after sales service is outsourced and there is no monitoring by the company!!!

Abhishek Jain (Mod)

You can go for any of the BlueStar or Panasonic models I suggested.

Geeta Mahadevan

Hi Abhishek,

Can you please explain 100% copper ACs?
My house in Mayur Vihar, Delhi, is near a nallah. Should I go for 100% copper or alloy AC?
Invertor or non-invertor AC?
Right now, I need to fill gas every season in my ACs as there is leakage always every summer season.
Please recommend a split AC for a our 170 sq ft room, used by two people.

Thanks. Geeta

Abhishek Jain (Mod)

There are two type of condensers available: PFC (Parallel Flow Condenser) also called as multi channel (MCHX), this is made out of aluminium or aluminium alloy. The other type is a tube and fin condenser which has copper tubes and aluminium fins. Although it is not 100% copper, but people in general have become so paranoid about copper, that the manufacturers market it as 100% copper. Both are good in general but the problem comes when there is corrosion. Both can corrode, but the aluminium or alloy would need complete replacement (as it is difficult to fix). Whereas copper one can be fixed.

If you are near a nallah, then the environment is corrosive. In that case you should go for 100% copper one.

Also I would suggest non inverter AC because PCB of inverter ACs are also prone to corrosion and the repair is expensive. You should go for 1.5 ton fixed speed AC. What is your budget for this AC?

Geeta Mahadevan

11:54 pmMay 12, 2017
Geeta Mahadevan
Thanks Abhishek for the precise answer. You cleared my long standing confusion with such a clear answer.
I dont have a rigid budget but would not like to spend for features i am not likely to use. And a big no to Hitachi, please. Can you suggest a 1.5 T split ac for my bedroom 10x16 ft, no sun facing wall. One that requires minimum or no maintenance on regular 8 hr use at night. Its difficult for me to reach up to the ID to clean the filter. Do self cleaning filters really work?
Thanks. Geeta

Abhishek Jain (Mod)

I think I already replied to this question. Please check the comment above.


Hey Abhishek,

I have decided to go for a 1.5 ton inverter ac budget being 45-50k and I was looking at Hitachi Kashikoi 3300i but have seen a lot of complaints on their twitter page that they dont provide proper care and support and sell substandard product. I also have LG BSA18BEYD,Samsung AR18MV5HETR, Voltas 183v MY, Voltas 183v DYe and Voltas 185v dye in my mind. i am open to any brand and suggestion. Features and durability would be what i would be looking for.


Hi Abhishek ,

The bluestar model is not in stock at my hometown and Amazon doesn't deliver there , i have the samsung AR18MV5HETR and hitachi Kashikoi 3300i can be delivered online, and Voltas i am not very keen on buying though so haven't enquired much. Could you suggest how to go with it?

Abhishek Jain (Mod)

In that case you should go with samsung AR18MV5HETR.

Abhishek Jain (Mod)

Hi Apurva,

The best model with lots of features and highly energy efficient in your budget would be Blue Star 5CNHW18PAFU (Amazon Link: http://amzn.to/2r2Xknm ) .... it has high ISEER (among top 5 in BEE 5 star rating), has loads of features (7 different filters, precision cooling), iFeel, etc and on top of it, it has copper condenser with anti corrosion protection. So this would be the best that you can get in your budget. The next best would be Samsung AR18MV5NEWK (Amazon Link: http://amzn.to/2pBH7VQ ). The good thing about Samsung models is its voltage protection. It can work between 90V and 450V, which makes it completely stabilizer or surge protector free model. It is highly energy efficient as well. The 3rd would be Voltas 185V DYe. But I think if you can finalize between Blue Star and Samsung, then that would be great. My recommendation would be for Blue Star 5CNHW18PAFU.


Hey I have managed to find the Blue Star 5CNHW18PAFU and there is another model 5CNHW18QATU. The price difference is 3k(50k and 47k) which one should I buy?


the bluestar website and the brochure doesnt clarify anything about the difference between the two models except for the 0.1 degree change and 0.5 degree change therefore if you could help me with how did you get to know that this model has blow clean and the other one doesn't then it would be very helpful for me to compare. and I dont have any brand preference but the shops here say that bluestar hitachi daikin etc are premium brands and samsung, lg are normal brands so i feel that one should invest in a better brand if you are spending so much, correct me wherever I'm wrong and thanks for the help again, awaiting your reply

Abhishek Jain (Mod)

Hi Apurva,

I checked in the brochure: https://www.bluestarindia.com/roomacs/pdf/room%20ac%20brochure%20-%202017.pdf

It has features on the top and also the technical details. I kind of agree with the statement that you hear in the shops. Blue Star is a better brand.

Abhishek Jain (Mod)

Hi Apurva,

QATU is another BEE 5 star rated series from BlueStar. It is slightly lower in energy efficiency, but it has better design for the indoor unit. Also it does not have blow Clean for filter cleaning (so filters will have to be cleaned manually). And that is why the 3K difference. Model is good. You can certainly buy it. However, Samsung AR18MV5NEWK would be a bit more efficient than QATU. These models are all good and each have their own pros and cons. I would suggest go for a brand that you are more comfortable with.


I have finally ordered the bluestar 5cnhw18pafu. does bluestar come in the league of hitachi, daikin or does it come in the league of samsug, lg? and should I get a stabilizer for the ac. we never have low voltages but i have seen very rare instances of high voltage. and if yes then which one would you recommend for this model?

Abhishek Jain (Mod)

Hi Apurva,

Blue Star is in the league of Hitachi and Daikin. They are quite good. It is not necessary to go for voltage stabilizer if you do not have voltage fluctuations. Just make sure that you have not heard of cases of appliances burning due to voltage in your neighbourhood. If there are none then you do not need a voltage stabilizer.


Got query a query,

Is LG 2 Ton Double Inverter is better over Mitsubishi Heavy Industry 2.2 Ton 5 Star ac?

Abhishek Jain (Mod)

Depends on the requirements of your room. LG 2 ton will not really be a 2 ton model, it would be 1.8 ton. MHI 2.2 would be 2.2 Ton, and higher tonnage certainly cools faster. But then it depends on your room's requirements.


Also i have heard that when it is higher temperature outside MHI works well even when it may reach 55+ but other may trip and stop working ! is it true?

Abhishek Jain (Mod)

MHI has "DX" series that they sell in Middle east which they are now selling in India. This series has operating temperature up to 55 degrees. Each AC has a operating temperature beyond which it does not function well. So if you are looking at DX series then yes it does work even at 55 degrees.



I wanted to know about initial costing and then cost saving.

AS LG 2 Ton Dual Inverter claiming it saves almost 50% cost as compare to normal 5* AC and they says its 2 ton 24NPXA

While MHI its 2.2 ton.

Thank You,

Abhishek Jain (Mod)

LG JS-Q24NXPA has cooling capacity of 6200 watts. 1 ton = 3504 watts, so this AC is 6200/3504=1.77 tons. It is not a 2 ton AC. Secondly it is a BEE 3 star rated AC with ISEER of 3.7.

MHI 2.2 ton Hybrid AC of BEE 5 star rating has cooling capacity of 7700 watts which is 7700/3504 = 2.2 tons. It has EER of 3.72 (and EER and ISEER values can be compared). So the MHI AC is certainly better in terms of cooling and good in electricity consumption as well.


Hi Abhishek,
I have 2 bedrooms of size 1) L-14'6" B-10' H-9'6" and 2) L-13' B-10' H-9'6".
Your tonnage calculator is suggesting 1 ton whereas all AC dealers are suggesting 1.5 ton, leaving me very confused. My usage is 7 hours at night and 1 to 2 hours during the day for about 8 months in a year. I am on the 1st floor in a 7 floor building and both the rooms receive little direct sunlight through the windows. I live in a very corrosive coastal area in Mumbai on the western side, where ACs then to breakdown very soon. Please suggest the correct star rated split AC with the right tonnage. Thank you in advance for your kind feedback.

Abhishek Jain (Mod)

Hi Imran,

Usually dealers use a thumb rule of 1 ton for 100 sq ft. And this is the same thumb rule that is used all across India. However, it is not right to use the same thumb rule everywhere. This is because a city like Delhi is too hot in summers (temperature goes to 46-48 degrees), whereas in Mumbai the peak summer temperature is 34. Then again a room on top floor that gets a lot of sunlight on roof and walls is hotter as compared to a room on lower floors. And then again your usage is only at night when the temperature is not as high as it is during the day. So I think 1 ton would be perfectly fine for your room. It will not only cool your room well, it will also consume less electricity. 1.5 ton will consume more electricity.

I think you should go for a 1 ton BEE 5 star rated non inverter AC with strong corrosion protection (Blue Fin Condenser). Brands like Blue Star, Panasonic and Hitachi have strong corrosion protection. You can look at these:

BrandModelAmazon LinkFlipkart Link
PANASONICCS-KC12RKY-1 http://fkrt.it/tFWEa!NNNN

These are all good models with strong corrosion protection and high energy efficiency. And trust me, they will all work great for your room and will also save electricity.


Hi Abhishek
Thank you for the feedback and suggestions. What is your opinion about the Mitsubushi Heavy Industries SRK13 CRS-S6; 1.1 Ton; 5 Star AC for my requirement.

Abhishek Jain (Mod)

Hi Imran,

I already replied to your comment yesterday. This model would be fantastic.


Hi Abhishek,
Thank you for the quick and detailed feedback.
What is your opinion about the Mitsubishi Heavy Industries SRK13CRS-S6 1.12 Ton 5 Star AC for my requirement?

Abhishek Jain (Mod)

It will be fantastic. You can certainly go for it.


Hi, I am looking forward to buy 2 Invertet Series Ac's . One is of 1.5 ton and other is of 1 ton. My usage would be approximately 12 hours per day. Could you please suggest which company AC would be most energy efficient and anti corrsion protection feature and other necessary features as you explained. From mt end, i have observed that O General ASGA 18JCC is most updated model but i was not able to find any reviews regarding same. And as your blog,
DAIKIN-JTKM50 is best. Could you please suggest which recommend the best? I don't want to waste my money to buy a BRAND AC(O General) if we i would get the same benefits in other brand then i will go with that. NEED YOUR Expertise advice here.

Abhishek Jain (Mod)

Hi Neeraj,

Daikin JTKM50 is the most efficient AC but I am not 100% sure of its corrosion protection features. Hitachi Kashikoi 5400 or 5300 or 5200 all have corrosion protection. Blue Star 5CNHW18PAFU (Amazon Link: http://amzn.to/2q2cj39 ) is also highly energy efficient and has corrosion protection as well. Similarly Panasonic TS18SKY is highly energy efficient and has corrosion protection as well. All these ACs are quite good, feature rich and highly energy efficient. I think Blue Star model would be most economical.


Hi Could you please share your reviews about O general split Ac's? Is all the above suggested brands has good services? Please suggest.

Abhishek Jain (Mod)

Hi Neeraj,

O General is a premium brand that makes really robust ACs that are quite durable. So on quality, they are just 5 star. But then the only area where they lack a bit is energy efficiency (or electricity saving). Within a band of star rating, they do not have the most energy efficient models. Not that they are bad, but then if someone is looking for most energy saving models, then General models do not come in the list.

As regarding service, I would suggest that you get local feedback on the same. Because it depends a lot on presence of a brand in a locality, the quality of their engineers, etc. And we do not have location specific data for the same.


Adding to above my query, I live in Chandigarh. May be it would help to suggest the best option(not sure)


Hi Abhishek,

Planning to buy a 1 ton for my 12ftx10ft room in chennai.
It has West & South facing walls.
Approx. it will be operated for 7 months and 6hrs per day.
Budget would be around 30K.

Request you to suggest few options on following requirements
1. Low power consumption
2. Air purification
3. Latest features
(Above requirements are numbered as 1 being high priority and 3 being low)
Appreciate your work.
thanks in advance

Abhishek Jain (Mod)

Hi Sandeep,

Is your house close to the sea? If no then you can look at these:

Whirlpool Fantasia 1 ton Inverter AC (Flipkart Link: http://fkrt.it/ME!SQ!NNNN )

LG JS-Q12BPXA (Flipkart Link: http://fkrt.it/MEYZc!NNNN )

Let me know if you are close to the sea and I can suggest other options. Also please note that more feature and filter rich options are expensive. The above two are the best deal I could find for lower power consumption.


My house is 2 kms away from sea.
Waiting for your suggestion.

Abhishek Jain (Mod)

In that case, I would suggest these:

Lloyd LS13A5LK (Flipkart Link: http://fkrt.it/SwmOHTuuuN ) or LS13A5LX (Flipkart Link: http://fkrt.it/mBDbS!NNNN )
Onida SA125CHE or SA125PRL or SA125SGS
Voltas 125 CYE (Amazon Link: http://amzn.to/2nJNm8W , Flipkart Link: http://fkrt.it/SuZRFTuuuN ) or 125 PY

The reason is that PCBs of inverter tech ACs are prone to failure due to corrosion. If you live in corrosive environment (close to sea, water body or chemical factory), then the likelyhood of the same increases. So it is better to go for a copper condenser non inverter AC in such case. These models listed above are the most energy efficient ones that can fit in your budget.


hello abhishek
i am from delhi.
my room have Length *Breadth = 15x 9,5ft
and height = 9.5ft.

Number of people will use the AC:- Two Adults and one child
Number hours uses:- 8-10 hours mostly in nights

we are on II floor with no windows in room.
west side wall have sun light in noon for almost 2-3 hours.

can you suggest split ac for my room.
which brand gave most reliable service ?
my budget around 40-45k.
please suggest between blue star, Daikin, voltas.

Abhishek Jain (Mod)

Hi Asif,

You can go for BEE 3 star rated inverter ACs. You can look at these:

BrandModelAmazon LinkFlipkart Link
VOLTAS183V EY http://fkrt.it/rzG4e!NNNN
VOLTAS183V IYhttp://amzn.to/2r08B8t

hello abhishek
thx for reply . i have few doubts .
these models are with copper condenser ? ?
and inverter Ac's need Stabilizer ?
can you please explane diffrence between MCHX Condenser & Anti-Corrosive Blue Fin Copper Condenser

Abhishek Jain (Mod)

Hi Asif,

All the ACs in the list are with copper condenser. Blue Star model additionally will have blue fin corrosion protection.

Inverter ACs do not get damaged due to low voltage. But then in case there is a power surge, then the PCB can get damaged. Going for a surge protector or voltage stabilizer with surge protection (or Thermal Overload Protection) feature is advisable in case the power quality is not good.

MCHX is multi channel or Parallel Flow Condenser (PFC). It is made out of ALuminium or Aluminium Alloy (sometimes they call it Alloy). Blue Fin Copper Condenser is tube and fin condenser where the tubes are made out of copper and there is blue fin corrosion protection.


thank you for fast reply.
i know you suggest best models with our requirement. but 1 more question . in the list above which models is most energy efficient.

Abhishek Jain (Mod)

Daikin FTKP is the most efficient. I usually sort it based on energy efficiency while giving recommendations.


many thanks.. .


hello abhishek ,
i am here again for some more question.
those bluestar models not avilable in my area.
So i go for daikin showroom , ask for DAIKIN FTKP50. which one you suggest earlier .
Instead for that ,they told me about FTKH-50 . He said it is latest 2017 model. in price of 40000. (3star 1.5T)
now i want to know about this models FTKH-50 (Is it same aS FTKP-50)?
2) IF both models are same ,then why amazon link shows 48,999 and dainik showroom give me amount of 40000?
3) can we guess making year of the model with its name ?
i need your prestigious comment on this . What you advice ? should i go for that model or you can suggest 1-2 more ....
thanks in advance

Abhishek Jain (Mod)

Hi Asif,

FTKH50 is not the same as FTKP50. FTKP is BEE 4 star and FTKH is BEE 3 star. So not same at all. And FTKH is not really very energy efficient. And in that case I would suggest you LG models:

LG JS-Q18AUXA (Amazon Link: http://amzn.to/2rpKteZ )
LG JS-Q18SUXD (Amazon Link: http://amzn.to/2oMG2Le )

which are better in efficiency and are copper condenser.

Also for Daikin, the year of make is there in the model number. A model from 2017 ends with SRV16, one from 2016 ends with RRV16, 2015 model ends with QRV16.


which 1 tonn spilt AC is the best in consuming least power for gurgaon.

Abhishek Jain (Mod)

These will be least power consuming:

1) Daikin JTKM35
2) Hitachi Kashikoi 5400i
3) Blue Star 5CNHW12PAFU (Amazon Link: http://amzn.to/2onV5KU ).


Further to your advice in this column... We just want to buy a 1 ton split ac for master bedroom of size 10x10 feet facing west with 1 window opening and are confused as to what to buy keeping TCO of 5-8 years in mind related to the usage of 4-6 hrs per day for about 7 months in a year as we reside on 3rd floor in a seven storey building in mumbai western suburbs.

1. Split ac 1 ton whether normal 3 or 5 star.
2. Normal or inverter split ac of 1 ton.
3. Which brands you advice
Thanking you in advance. Awaiting your clear cut sharp advice. Regards

Abhishek Jain (Mod)

By the way for a 10x10 room. You can also go for 0.75 ton split AC. That would be far more energy saving and would cool the room as well. And in that you may consider inverter AC as well. You can check these:

Blue Star 3CNHW09CAFU would be best

Mitsubishi MS-GK10VA (Amazon LInk: http://amzn.to/2qduRyT ) this is not an inverter AC.

Blue Star 5HW09SAFU (Amazon Link: http://amzn.to/2p9r7Os )

Abhishek Jain (Mod)

Your usage would be about 1200-1400 hrs a year. Tariff in Mumbai is high, so I would not suggest you to go for BEE 3 star normal split AC. But I think BEE 5 star normal Split AC should be required. You can look at these ACs:

Blue Star 5HW12SBTU or 5HW12ZBRTU or 5HW12ZBWTU

Daikin ATF35 (Flipkart Link: http://fkrt.it/pKGqxTuuuN )

Daikin DTF35 (Amazon Link: http://amzn.to/2ptUoD9 , Flipkart Link: http://fkrt.it/pLtgZTuuuN )

Daikin FTF35 (Amazon Link: http://amzn.to/2pucepA , Flipkart Link: http://fkrt.it/pKleOTuuuN )

Carrier Octra-X 5 Star or Superia-X 5 Star

Hitachi RAU512KWD

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