Electricity Saving Tips For Homes And Offices

Difference between Inverter Technology and Power Inverter

By on April 22, 2016

It has been several years since Inverter Air Conditioners (and refrigerators) arrived in India. Initially, people were sceptical of the new technology, but lately, people have started embracing it. No doubt that it is because Inverter Technology Air Conditioners save a huge amount of electricity. However, there is one big confusion (or we may call it a myth) that exists amongst most consumers: that Air Conditioners with Inverter Technology have power backup like a power inverter. For years, we have grown up with a belief that inverters are needed for power backup. And thus arrival of Inverter Technology has added to the confusion. But what exactly is the truth?

What is an Inverter?

In technical (Electrical Engineering) terms, an inverter is an electronic device that converts Direct Current (or DC in short) to Alternating Current (or AC).

Why is it needed?

The electricity that we get in our house from the electricity grid is in AC or Alternating Current. Long back our forefathers decided that it is safer to do electricity distribution in AC than in DC (or Direct Current). And because all the distribution was in Alternating Current the appliances that we use in our house (like air conditioners, refrigerators, fans, etc) all work on Alternating Current.

But when there is a power failure (or no electricity distribution from the grid), we need a power backup (or storage) that can help us run these appliances. For this humans came up with the concept of battery. A battery can store electricity and can be used whenever we need it. However, there is one challenge: A battery can only store DC or Direct Current. But all our appliances use AC (or Alternating Current).

And this is why we need an Inverter (or a device that converts DC to AC) to be put in between the battery and the appliances.

In short, inverter does not store electricity, and it is the battery that stores electricity. Inverter just converts DC to AC.

What is Inverter Technology?

All the confusion with Inverter Technology is because it is called Inverter Technology. Another name for it is Variable Frequency Drive (or VFD in short). The incoming alternating current that we get in India comes at a frequency of 50 Hz. Scientists have designed a variable frequency motor that can change its speed if the frequency of the incoming alternating current is changed. Thus to achieve this variable-frequency a rectifier is used to convert the incoming alternating current (AC) to direct current (DC) and then uses pulse-width modulation in an electrical inverter to produce AC of a desired frequency. This results in significantly better efficiency and electricity savings.

Please note: there is no battery in this setup to store electricity. The drive just has an “Inverter” to convert DC to AC (of desired frequency). This device cannot work if there is no power. It NEEDS power to run. To know more about Inverter Technology Air Conditioners you can read this article on our website:

What is Solar Inverter and can Inverter Technology Air Conditioner work on solar?

This is another question that confuses consumers quite a lot. Solar Inverter is very much like a power inverter explained earlier in this article. The only difference is that the battery is charged using solar power rather than the power from the grid. In a regular inverter, battery is charged using power from the grid. The rest of the functionality of solar inverter is very much like regular power inverter. It takes DC from battery and converts it to AC to be used by the appliance.

Inverter Technology air conditioners work on Alternating Current (or AC), and a solar inverter does provide AC (by converting DC from batteries to AC). And so an Inverter Technology Air Conditioner (or refrigerator) DOES work on solar inverter. In fact, if you want to have greenest possible air conditioner (that works on clean energy, saves electricity and is cheapest to install), then the best solution is to install an Inverter Technology Air Conditioner with a Solar PV system.

Conclusion

Inverter Technology is currently available in Air Conditioners, Refrigerators, Washing Machines and Ceiling Fans. It is very different from Power Inverters and does not have any power backup. A consumer should not assume that these will run even during power cuts.

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  • Suresh

    We have installed a UPS of make Ecovolt 1050 of Luminous India recently (https://luminousindia.com/assets/downloads/homeups-eco-volt.pdf). After the installation our daily electricity consumption has increased by 2 units. Does the UPS take this much power ? Or is there anything wrong in the circuit?

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

      Have you compared the data with the days when you have a power cut? Did you have inverter before this?

      Power Inverters do not generate electricity. They store it in batteries. They do have losses, and their efficiencies are in the range of 85-90%.

      If you did not have inverter earlier, you were not using electricity when there was a power cut. Now you are storing that electricity in batteries and using it when there is a power cut. The electricity has to come from the grid. Which is what you may be seeing on your meter.

  • Baiju

    Thanks in seeing your valuable answers to everyone’s queries professionally. Please help me with my below queries as need to purchase many new electrical items for my newly constructed 3 bhk. Am a resident of Bangalore ITPL, Whitefield. The needed items are :
    Ceiling fans 4 nos.
    Exhaust fans 4 nos.
    Geyser (6/10 Ltr) 2 nos.
    LED Lights and needed accessories for a 3 bhk flat. Decoration light for main hall.
    Fridge (200 Ltr) 1 no.
    Could you please advise on the best recommendable models and references, if any. Thanks

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

      Well difficult to give you answers to too many things without knowing specifics. However I will try to tell a few things that I can comment on easily:

      1) Ceiling Fans: If you want highly energy efficient fan then I would suggest going for Superfan (www.superfan.in). They are also available on Amazon : http://amzn.to/29fGRUs …. Highly energy efficient with good air delivery. You do not need a regulator with this fan as it works on remote control (so you can get extra spot on your plug points to put something else). It also has a non remote operation procedure which you can understand from their website. Not a big company but the fans are good. If you want a bigger brand then you may look at some models on this link: https://www.bijlibachao.com/top-ten-appliances/best-ceiling-fan-khaitan-havells-usha-crompton-greaves-orient-in-india-electricity-consumption.html

      2) Exhaust Fans: There are no energy efficiency standards for exhaust fans. And when there are no standards, manufacturers do not provide any data to compare :) …. So go for any reputed brand (Havells, CG, Orient, etc).

      3) If you plan to put shower then go for a 15 lts water heater, else 10 lts should be good (considering it is cold in winters in B’lore). AO Smith, Racold, Havells, Ferolli, Morphy Richards, Bajaj are some good brands. You can look at list of top most efficient models on this link: https://www.bijlibachao.com/top-ten-appliances/best-water-heaters-geysers-brand-in-india-by-standing-loss-and-size.html

      4) Number and wattage of LED lights depends on the size of the rooms and the kind of activities that need to be done in the room. Also it also matters as to how you want to decorate the room (as there are regular LED lights as well as decorative lights).

      5) Are you looking for single door (direct cool) or frost free (double door) refrigerator? You can check some top models on this link: https://www.bijlibachao.com/top-ten-appliances/what-are-best-refrigerator-fridge-lg-samsung-whirlpool-india-buying-guide.html

  • Vishal
  • Shiv

    Hi Abhishek, i live in Mumbai and using Whirlpool 1.5 ton 5 Star 3DXtreme Cool model. Just want to know how much of the power it consumes per hour.
    Thanks
    Shiv

  • Maulik Sharma

    Hi Abhishek
    Seems you have been answering to everyone’s queries patiently.
    Please help me out with this
    I have 2 acs one is of 1 ton(3 star) and other is 1.5 ton(5 star) inverter ac and other usual household appliances. I have a 3 kilowatt meter installed at my house(single phase). Someone told me to upgrade my meter from 3 to 6 kilowatt or I will have to face heavy penalties by the electricity department. I am a resident of Meerut, Uttarpradesh.
    Please suggest what should be done asap. Thanks

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

      UP does put penalty on increasing the load and with two ACs, your load will certainly be more than 3 kW. You can either directly increase it to 6 kW. But if you want to be more economically prudent, then I would suggest that you look at your electricity bill. The distribution companies mention sanctioned load and actual load for a month on the electricity bill. If the actual load is more than sanctioned, then there is penalty. But then looking at actual load, you can get the load increased.

      There is associated cost with extra load increase, so if you look at the bill and if it is 4 kW, then you may not need 6 kW, you can just live with 4 kW. But if it is 7 kW, then you will get penalty even when you increase to 6 kW. And that is why I said, look at your electricity bill and take action accordingly.

    • Maulik Sharma

      Thank you so much Abhishek…. I got it.

  • aspirant

    hello
    i’ve got a query related to voltage fluctuation.
    comes summer and there’s an ancient problem start creeping in VOLT FLUCtUATION.

    problems i faced:

    1) wire got heat up(often melts and short circuit, though wiring is bit old but changing wiring will cost hell lot of savings)
    2) AC Compressor falis to turn on or turn off after 15mins.(using 2ac)
    3) oven element fused due this
    please suggest some ways to minimize this voltage fluctuation .
    with cost benifit analysis
    i heard about power saver is it really effecrice in volt fluct..
    (not reducing bills)if yes then which one to buy and how to install and their cost analysis& if no then what are other measures to take ??
    @abhishekjain

    timely reply will be appreciated.

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

      1) Never think of installing voltage stabilizer for your house because it will cost you capital as well as running cost in terms of the energy losses. Heating of those wire which connects AC may take place if it is not designed to carry that much of load. When wire unable to carry the equivalent current, it heats up and if the insulation is not rated it melt resulting in short circuit. The wires other than AC shall not be a problem. In that case, change the cable wiring for ACs as there is no short cut for it.

      2) AC and fridge shall be installed with voltage stabilizer. Voltage fluctuation generally affects working of AC and refrigerator as other items are generally not affected.

      3) You said that AC compressor takes 15 minutes to start. The reason may be due to inbuilt time delay and delay causes by the compressor temperature not coming down. If the temperature of the compressor is high, than it will not start unless the temperature goes down below the permissible level. Please check, if the direct sun light is falling on the body of the AC or the side where the compressor is installed is having adequate ventilation margin. These are the main causes of the compressor starting late making you sweating and cursing for high temperature.

      4) I understand this problem may be experienced during mid day hot summer.

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  • Celes Fernandes

    Dear Abishek,

    For LG. refrigerator freezer cum refrigerator, is stabilizer required as I heard it has inbuilt and no need for stablizer..Awaiting you feedback.
    Regards

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

      Most modern refrigerator do not need a stabilizer. I have seen that all new models from LG do not need stabilizer.

    • Celes Fernandes

      Hi,

      Thank you for answering my query reg. refrigerator.

      Regards

  • Anita Patel

    Dear sir,
    looking for a split ac and as per site calculator 1 ton inverter or 5 star 1.5 ton

    Living in Anand, Gujarat
    Temperature in summer between 40 to 45
    Vistit Some showrooms They suggest me
    1.5ton 5 star and also tell about daikin that there new models are not imported but manufactured in india so quality wise not good as imported is it true?

    Want to buy energy efficiant & durable a/c

    Room Size 132 Sq.ft 4 persons, no direct sunlight on roof, Sunlight in West

    If I go for 1.5ton Inverter A/c be a Right discission or go for 1 ton inverter ac i want to go for 1 ton

    Which brand & Model should I buy?

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

      Firstly I do not see any problem in models manufactured in India, but then it is your choice and comfort.

      You can look at these 1.5 ton ACs:

      Godrej GSC 18 FG 8 MOG
      Hitachi RAU518MWD
      Samsung AR18JC5ESLZNNA
      Whirlpool 3DCOOL XTREME HD 5S (1.5 T)
      Mitsubishi Electric MS-GL18VF

    • Anita Patel

      I want to know your opinion about Indian manufacturing ac’s of daikin.

      i am looking for daikin 1 ton inverter ac is it ok?

    • Anita Patel

      i am looking for daikin 1 ton inverter FTKP35QRV16) is it ok?

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

      It is a very good AC. You can certainly go for it.

    • Anita Patel

      Thanks for your guidance, i bought ftkp35qrv16 fitting done on 30-May, Can i put it on 30 degree temperature?

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

      You surely can if you find it comfortable at that temperature.

    • Anita Patel

      If i set 30 degree at 9:30 PM (sleeping time from 10:00 pm) that time indoor temperature about 35 degree But at 3 to 4 am outdoor temperature down upto 27 degree . kindly suggest right temperature to set before sleeping.

      Thanks

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

      The compressor will not run at all if your outdoor temperature is 27 and you set the thermostat to 30. Which will save a lot of electricity. So as I said, if you feel comfortable then keep it at 30.

  • aspirant

    i am looking for a split ac

    and i came across two recently launched models of videocon:

    1) 1.5 Ton Aryabot AC Model No: VSX55.WV MRP Rs 37 100/-

    2)1.5 Ton Penta Inverter AC Model No: VSX57.WV MRP Rs 49 000

    can you please review them

    since on paper aryabot looking more attractive (going by features)

    and i have no idea what is all about that “penta inverter ac”(how it is different from normal inverter ac ?)

    can you please review(in detail) and suggest what will be the right choice

    since priority is efficient electricity bill ..

    timely reply will be appreciated.. :)

    thanks

  • Celes Fernandes

    Hi Abhishek,

    During monsoon we face lot of electrical problems in Goa and so we thought of an Inverter which we discussed with our electrician. He says that different wiring has to be done for the house if Inverter is installed. Since we dont know much about it could you enlighten us with your expertise whether new wiring is required in case we install an inverter.

    Today morning we had a shut down from 8. am. to 4 p.m. reg. feeder. and when the power was restored we have nearly about 3 or 4 power trips after they restored the power. We are afraid that our fridge or t.v. will get affected but electrical department does not bother about this frequent trips in less than half and hour after restoration.

    Regards

    Celes Fernandes

    • Celes Fernandes

      Hi,

      Thanks for your tip reg. refrigerator and t.v.

      Regards

      Celes

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

      Hello Mr Fernandes,

      Did he tell you the reason why new wiring needs to be done? Is the wiring bad in general? If the wiring is good enough then there should be no reason to change it just for installing inverter.

      Also TV can be protected using a good surge protector. TV can get damaged only when there are short circuits.

      For refrigerator, if it is not inverter technology compressor, then it is better to have a voltage stabilizer with it. If it is inverter technology compressor then a surge protector would be good enough. However, most modern refrigerators have a stabilizer free operation (they have a high input voltage range of say 115V to 260V).

    • Celes Fernandes

      Hi Abhishek,

      No reason was given for new wiring as last 1 years back I have got done new wiring.
      Also I have a refrigerator WHIRLPOOL 3 STAR BUT WE have put a stablizer as earlier due to power fluctuations our fridge, t.v. got spoiled and was forced to buy new one so we have installed a stablizer as informed that stablizer is good even if it not requried for refrigerator.

      How to know if the refrigeration has inverter technology compressor. Kindly inform us.

      Regards

      Celes

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

      Whirlpool does not have inverter technology compressor fridges. So yours won’t be one. Better to put stabilizer for refrigerator. Make sure you have a surge protector for TV.

  • jaydeb behera

    hi abhishek, i want to know about the samsung smart digital inverter refrigerator.there is nothing details in their web site.I knew that there is a vfd technology inside it.but the shop keeper told me that during power failure it can run through a 900va domestic inverter by consuming very less energy.and switch to main automatically with its full load when main power supply will come.
    but he can’t explain that how the refrigerator sense whether it is a main or inverter supply to run in full load or less load?????????his ans. was the fluctuation of power supply during change over from main to inverter or from inverter to main.but in many case there is also some fluctuation in main power supply too.
    then what happen in that case??????

  • Vaibhav gupta

    Hi abhishek i recently bought hitachi 3200i 3star 1.5 ton inverter ac and it consume about 5 units in 5 hour at day time and my terrce direct face sunlight and at night it consume about 0.7 to 0.8 unit per hour i kept ac at 26°-28° degree is this ac is good??

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

      Hi Vaibhav,

      It sounds reasonable. You can try reducing the heat from the terrace by using white sun reflecting paint on the terrace (or even put white chuna on the terrace). That will reduce your electricity bills.

  • tushar

    hi I recently bought a 1.5 ton Lloyd ac ls18vi model.my rented house is exposed to sunlight from all sides so I thought buying a inverter ac would save me in electricity money. Now after running it few days it seems to be consuming a lot of power i.e I run it for 9 hours every day and it eats up about 18 units of power every days. I am totally alarmed and feel clue less as to what is wrong with my ac. I certainly didn’t expect this huge consumption by a 1.5 ton inverter ac. my room size is 160 square feets.when I checked sticker pasted on the side of my IDU it reads maximum rated input 2500 W , cooling input of 1740 W for 100% /603 W for 50 % .I am confused about these figures , doest it mean that ac is supposed to consumed about 2.5 units /hour when compressor is working 100%capacity. as stated earlier my room is exposed to sunlight full day , so walls become heated and compressor never stops even during night time when ac is running.Noe I feel I made a mistake by buying a inverter ac. if I had bought a simple 5 star ac it would have consumed much less power in the same setting owing to its lower watt number ( aound 1500W). please enlighten.

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

      Hi Tushar,

      Inverter Technology has variable tonnage. From that I mean if you buy a 1.5 ton inverter AC, it can adjust itself from anywhere between 0.3 to 1.7 ton depending on the need of the room. It’s power consumption also varies accordingly and that is why you see 50%, 100% and 120% (or peak power). 2500 Watts in your case is peak power.

      The point to note over here is the “need of the room”. The heat load of any room varies throughout the year and even throughout the day. It not only depends on the size of the room, but also on how hot are your walls, how many people are there, how many appliances are there in the room, how much the room is stuffed with things, how hot is it outside in your city, etc. If the need of the room is 1 ton, a 1.5 ton AC will scale down to 1 ton and save electricity. However, the compressor of the AC will always keep running. It will just scale down or up, depending on the need of the room and temperature you set it at. If you keep it at 18 and outside temperature is 50, then the compressor will keep running at peak capacity trying to reduce the temperature to 18. Also If your room needs 2 tons cooling (for 25 degrees), then also the compressor will keep running at peak capacity all the time. In that case it will actually take 2.5 units/hr (as maximum rated input is 2500 W).

      So here are some points:

      1) The AC you have purchased is not very efficient inverter AC. Not all inverter ACs are better than BEE 5 star rated AC. You have to look at the EER and power consumption before buying. This AC has EER of 2.99 … which means, buying a BEE 5 star rated non inverter AC is better.

      2) I hope you have done the sizing of AC properly. You can check the right size (or tonnage) required by your room using this calculator: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html ….. if your AC is undersized most of the time, it will consume more.

      3) I hope you keep the room doors and windows of the room tightly closed while using the AC. Outside heat can increase the load on the AC.

      4) I hope the walls and ceilings of the room are not too hot (by direct sunlight). If yes then that can also increase load on AC. You will need insulation to reduce the heat.

      5) Do not stuff the room with too many things, because everything you keep in the room needs cooling.

  • vipin

    hi abhishek one of my known is selling his old 2 ton split acs …..hualing brand ac which has kirloskar compressor….ac is 4 to 5 years old but less used….he is asking 17000 with stabiliser…what say…should i go for it?

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

      I would not suggest going for old ACs. The energy efficiency (electricity consumption) of ACs have improved significantly in last few years and old ACs will consume more electricity.

  • vipin

    hi abhishek vipin dis side…actually i have 240 sq ft room on first floor having direct sun light ……m confused btween diakin/hitachi/general…what should i go for?

  • Harshal

    Hi Abhishek,

    Thankfully I landed on your website which has solved many of my doubts.I Still need your help in making the final call.
    I am starting a exercise studio in Ahmedabad (Owned Property) ,It would run for 10 hours a day round the year AC will work as we may not have fans,my requirements are as below.

    1. 2 Rooms of size 170 Sq Feet
    2. 2 Cabins of size 50 Sq Feet.

    I have preference for Cassette AC in 2 bigger rooms,as they look good, plus Hi-wall is little difficult to install(Having Beams and Glasses on the sides) and long pipping would be required.

    I have two Options.
    Option 1:
    1. 2 Cassette AC of 2TR of Mitsubishi Electric
    2. 2 Inverter Split of 0.75TR. of Daikin
    (Total project cost roughly 2.25 lacs)

    Option 2:
    Daikin VRV class iii-s – 6 HP(4.4TR) Outdoor unit and 2 cassette indoor units in rooms and and 2 Hi-Wall in cabins.
    (total project cost roughly 3.75 lacs)

    Following are my concerns:
    1. Does it makes sense to invest in VRV considering the above mentioned requirement and full usage then after? I dont mind spending if it is worth spending in technology and if it is going to give benefits to me in future,It is a owned property to I intended to use for longer period.)
    2. Does it makes sense to go for cassette with Inverter?I know they are priced exorbitantly but normal cassette will consume lot of power which concerns me the most.

    Please share your views.

    Appreciate all the effort you are doing,sincerely feel you should start consulting and charge money for your advise :)

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

      Hi Harshal,

      A usage of 10 hrs a day for all 365 days makes a very easy case for Inverter or VRV system. I do not think that it would be wise to go for non-inverter cassette AC. I am sure that with that kind of usage the extra 1.5 that you pay would recover in a couple of years. The 2 ton cassette AC would consume a lot of electricity as compared to the VRV system.

    • Harshal

      Thanks a lot Abhishek, should I go with Daikin in VRV or any other company?

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

      I think Daikin is a good brand.

  • Saurabh

    Hi Abhishek

    First of all thanks for such a wonderful work. Your blog has been helping me from past three years to buy right AC. this time I thought to take your advise in the scenario as below
    1. I stay in Delhi, and my apartment is at TOP floor. Means my roof burn in summers and room temperature is quite hot
    2. The house is near sever and nearly every alternate year I end up going for gas refills due to Corrosion effect
    3. Last timer based on ur recommendation I bought a Hitachi AC for dad rooms and Sharp inverter ac for my living room. Hitachi service is worst and a big no no for me.
    4. Now I need to buy an SPLIT AC for my bedroom (currently using Bluestar windows 7 year old model). I understand split AC are more efficient
    5. My bedroom AC literally run for 10-12 hours a day due to heat and literally 8-9 months a year at minimum.

    Now I want to go for a good SPLIT AC for my bedroom (around 120 Sq Ft) which is not very costly, works in high heat temp (heard some AC claiming relief at 52 degree) , comes with Anti Corrosion coating, maximum possible comprehensive warranty (heard Mitsubishi giving 10 years!) and have a good after sales support. Top of all saves money as my current electricity bill is very high…

    Can you please help me with some options. I will be really thankful…. Hope I am not asking got two much features.

    Cheers
    Saurabh

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

      Hi Saurabh,

      My guess is that you would need a 1.5 ton AC but you can check the same using the calculator 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

      Mitshubishi Electric and Heavy, both are very good brands with fantastic models (and yes with corrosion protection). Mitsubishi Electric MSY-GK18VA and Mitsubishi Heavy Industries SRK18YL- S are very good models with good energy efficiency. But I guess they will be expensive. You may get Daikin FTKP which would be very efficient but may not be as costly as the Mitsubishi models. O General ASGA18JCC is also very efficient and again has copper with corrosion protection.

    • Saurabh

      Thanks Abhishek for your response. I did some research on brands u suggested and found the following
      1. Daikin FTKC50NVH (Taiwan Made) with warrenty
      2. Godrej GSC 18 GIG5D GOG – very high EER but not sure how is Godrej as a brand and service
      3. Panasonic US18SKY
      4. Voltas 183 VEY – not sure how it is.
      5. Hardly anyone is selling Mistubushi in my area so will figure out..

      All lies in around 48K. Let me know if you have any views on Godrej…. in terms of quality and after sales.

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

      Brand wise I if I have to apply my subjectivity, I would say that Daikin is better. From Energy Efficiency point of vide Godrej is higher. Godrej will have PFC or aluminium condenser and it has R290 which is essentially LPG (which is flammable).

  • Debanjan Sarkar

    My current AC is Whirlpool 2 star rated fixed speed AC(split) which was bought on 5 years back. Now I want to upgrade my AC . Please suggest me a good type of Inverter AC. I live in kolkata and cost of electricity is very high.

  • Deepak

    Sir, you are a very good job with this blog. I had many of my doubts clarified thorough this site. However one remains and I look forward to you to resolve it. I have I placed an order for a Mitsubishi 1.5 inverter AC and the dealer is pushing me to buy a stabilizer and he says everybody is using even for inverter model. My apprehension is not the additional price but it will look ugly on my wall. I have an inverter refrigerator and was told stabilizer is not required for that so I assume the same must apply for air conditioner also. But if it is really required I am willing to invest on a stabilizer to protect the more expensive AC.

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

      Inverter ACs do not get damaged by Low Voltage. Just like ceiling fans, their output will reduce but they will not get damaged (non inverter ACs can get damaged at low voltage). So firstly if you do not have power fluctuations then you do not need voltage stabilizer. If you do, then if you do not want to reduce output of your AC then you may go for stabilizer.

      As for refrigerator, they have high input voltage range (110-260V). So even if your voltage drops to say 140, it will still have the same output. Daikin has inverter ACs that have stabilizer free operation because their input voltage range is high.

  • Ashesh Biswas

    Presently I an using 2 ACs at my home. those are of Conventional technology and consume 1500 KW/hr each ACs. If it would have been an Inverter Technology AC what would have approximate savings (in an 1.5 Ton AC)?

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

      Your conventional AC would be consuming 1.4-1.5 units per hour. The best 1.5 ton inverter AC would consume 0.5-0.6 units per hour. So you can save approx 1 unit per hour of usage if you go for the most efficient model.

  • Gagan Sharma

    Sir plz sggest me about haier brand . I am looking for inverter ac of haier brand HSU-19CNMW(DCINV)

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

      Hi Gagan,

      Haier is a cheap and decent brand. I would not rate it amongst the best, but then if one is constrained by cost, then such brands work. The EER of this model is 3.18, so I would say that it would be as good as a BEE 5 star rated non inverter AC.

    • Gagan Sharma

      and what about godrej invertor ac GSC 18 MINVWOM

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

      Godrej is a good brand, but this specific model has EER of 3.01 which is quite low. Going for a BEE 5 star rated non inverter AC from Godrej would be better than this model in terms of electricity savings.

  • biswajyoti dutta

    which one would be better ac
    1. GODREJ- GSC18MINV WOM
    2.HITACHI-RAU318 KWEA
    3.DAIKIN- FTKH 50 QRV16
    4.CARRIER- MIDEA SUPERIA PLUS KT 1.5 TON
    5.VOLTAS- 18V DY

    • Pankaj Naik

      You can also think about Hitachi RAU518CWEA ( Inverter with I Clean Technology) its 5 Star Model in Inverter.

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

      Amongst those you have listed HITACHI-RAU318 KWEA would be the most efficient and better option. Superia+ from Carrier is also a good choice.

  • JC

    Hi Abhishek, I live in Mumbai. I have visited some stores for split ac requirement. My room is 120 sqft with 11ft ceiling height. There would be approx 4 steel cupboards in the room. I have been advised 1/1.1 and 1.5 ton by diff stores. I have tried your ac calculator which gave a 1 ton as the answer. I have two questions: what tonnage do u recommend ? Are Invert or ac’s heavy on maintenance( gas replacement/servicing/spares/circuits etc..)

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

      Hi JC,

      I would recommend the same as what the calculator on this website suggests :). I have put all my brains in the calculator and it suggests the same what I would do.

      In Mumbai the climate is not very hot (peak temperature of 34). So you do not need big AC. The dealers use thumb rule of 1 ton for 100 sq ft across the country. But how can the same standard apply for all cities when one city (e.g Delhi) gets peak temperature of 45-46, while Mumbai gets peak temperature of 34. Imagine putting a 1.5 ton AC in Darjeeling where climate is mostly cold!!! It does not make sense.

      So I would also say 1 ton. And no Inverter ACs are not maintenance heavy. I have been using one in Mumbai for last 3 years now. I have called the company only for regular maintenance. But yet the AMC is about Rs 400-500 per year costlier. But I am sure you would not mind paying that much for a year when it saves whole lot of electricity.

  • Kiran

    Hi Abhishek, we live in Visakhapatnam. Am planning to buy Daikin 1.5T ATC50RRV161. Please let me know your opinion. As I was waivering between this model and Hitachi. What is your suggestion? Thank you in advance.

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

      Hi Kiran,

      Daikin is a great brand (my personal favourite). It has all copper models with corrosion protection. This model is BEE 3 star rated, so first thing that you should check is, if BEE 3 star is good for you or should you go for higher star rating (you can check it using the calculator 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)

      If you go for Hitachi then you will get more energy efficient models than this one, but then the difference between those models and this one would not be much. If Hitachi has good service in your area, then you can go for it, otherwise there is no problem with this model as well.

    • Kiran

      Thank you for the prompt reply. Will consider your point regarding service centers and then proceed. Once again appreciate your time and effort.

  • Suman

    which one would be better Bluestar 5hw18satu/sbu or Bluestar 3cnhw18nafu ??
    according to price there is a difference of rs 4,500!! please suggest..!!
    as early as it possible…..!!!

  • Anshul Johar

    Abhishek, I live in Patiala, Punjab. Here, we have a number of open drains running throughout the city. My AC technician says the indoor unit of my split AC breaks down around 3-4 years because of the fumes emanated from these drains. Is that true?

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

      Hi Anshul,

      Air Conditioner has two heat exchangers: Condenser (outdoor unit) and Evaporator (indoor unit). Both of these have copper pipes that either made of copper or aluminium. Now both copper and aluminium can corrode and corrosion protection is a must. If your AC does not have it, then it will fail frequently. In case of aluminium the whole heat exchanger needs replacement. In case of copper it can be repaired. But the best thing is to have corrosion protection in the heat exchangers.

  • Anshul Johar

    Dear Abhishek, I congratulate and thank you for the initiative you have taken. This will definitely spread awareness among the inquisitive minds.

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

      Thanks Anshul. I am glad that you liked it.

    • Pankaj Naik

      Hello Abhishek , I totally agree with Anshul, You are doing great work!!! Really appreciate it. However , it will become awesome if you can launch your app as well. This will be very handy as compare to Website.

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

      HI Pankaj,

      I am glad that you liked it. App is certainly a good idea. We have several things on cards, I just hope we manage to get funds for it :).

  • Anand

    bijlibachao Team, You people rock, i have googled lot of web sites and searched many ecom sites for Split AC, but you people kept all the information at one place, i Wishi should have seen this site b4 buying the AC, Thank you Very Much :)

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

      We are glad that you found it useful :).

  • Shailesh Deshpande

    Hi Bijle Bachao Team,,, First of All Thank you very much for building such a valuable website,,, My question to you is ,,,Does Increasing the FAN speed in an Inverter Split AC will lead to more electricity consumption ?

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

      Well increasing and decreasing fan speed does impact electricity consumption. This is due to two reasons:

      1) The power consumption of fan itself varies with the speed. At faster speed, any fan consumes more.

      2) When you increase the fan speed, the cooling impact of the AC is more, i.e. it reaches to farthest spot in your room. If fan speed is low, it will only cool the area close to the AC, if fan speed is high, it can cover the whole room. The increase in cooling area increases the cooling done by the AC and thus increases the electricity consumption.

    • kARTechnology

      In case of Central ac’s, even though the fan takes like 400W-500W, does putting it at high speed help to cool faster and reach the set temperature and which turns off the compressor and saves electricity?

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

      A lot depends on how the setup is. Fast fan speed helps cool faster and cover larger area. Compressor will turn off quickly if the AC is oversized. Else if the AC is right sized then it would run for its normal time. Oversized ACs also consume more electricity.

  • Hemant Gurbani

    Is it worth to buy Hitachi RAU524IUD 2 Ton Split AC plz reply because in market only this 2 ton model available in hitachi

  • gurpreet singh

    Kindly suggest me i want to buy an AC for my room size 110 sq feet in which 01 side there is direct sunlight and from roof alsoitheats up.

    1. Suggest me which split ac i can buy 5 star rating or 3 star rating or inverter ac.

    2. Which company and which model should i buy.

    3. I want energy efficient , durable and low service cost AC .

    4. I live in punjab suggest me please

  • gurpreet singh

    Hi abhishek

  • Lakshman

    Hi, am planing to buy a split ac. Room dimensions are 13×13. Room is located on the first floor, West facing. Also I have been told by certain dealers that inverter a does not need a stabiliser. My budget is between INR 35000 to 40000. Pl advice.

  • ANIL GUPTA

    is there major difference in saving electricity while using 3 star or 5 star “Inverter” AC ? … does star rating make much difference on Inverter AC also ?

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

      It certainly does. We recommend BEE 3 star rated inverter AC if your annual usage of AC is more than 1500 hrs and tariff is more than Rs 5. If usage is more or tariff is more, going for BEE 5 star rated Inverter AC is better.

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