Electricity Saving Tips For Homes And Offices

Understand What is ISEER and Star Labeling of Inverter Air Conditioners in India

By on April 22, 2016

A few years back when Inverter ACs were introduced in Indian markets, there was a lot of skepticism about their success in Indian conditions. Although they are quite successful and popular internationally, these ACs did have to go through the tests of Indian consumers. Despite some negative rumors by a section of the market, Inverter ACs have come out with flying colors and have become popular in India. One thing that everyone knows (and many have observed) is that Inverter ACs save “HUGE” amount of electricity. But one question has been there in everyone’s mind: Why is there no BEE star rating for Inverter ACs as available for fixed speed ACs? In the year 2015, BEE did provide answer to the question by starting a Star Rating labeling system for Inverter Air Conditioners. With this post, we will try to answer few questions that people have regarding the new Star Rating for Inverter Air Conditioners.

Why Did Inverter ACs Not Have Star Rating Earlier?

Although purpose of any air conditioner is to cool the space, the way cooling happens in fixed speed ACs is different from the way it happens in Inverter ACs. The technology is a bit different. Fixed Speed ACs have fixed cooling capacity (or tonnage) and fixed input wattage, Inverter ACs have varying cooling capacity and input wattage. The definition of efficiency for a fixed speed AC was quite simple:

EER (or COP) = Output Wattage (or cooling capacity) ÷ Input Wattage.

(EER Stands for Energy Efficiency Ratio & COP stands for Coefficient of Performance)

By calculating EER/COP of fixed speed ACs and defining fixed ranges, BEE was able to divide all the fixed speed models in the market in 5 groups of different star ratings. But this works well when there is fixed output wattage and fixed input wattage. But defining the same for Inverter AC was very difficult as both the input and output wattages vary.

What Will Be The Method To Define Star Rating Now?

World over the method of defining energy efficiency of air conditioners is not EER (Energy Efficiency Ratio), but it is SEER (or Seasonal Energy Efficiency Ratio). The basic theory behind SEER is that the temperature does not remain the same round the year. As there is seasonal variation of temperatures, there is variation in the amount of cooling required. Amount of energy (or electricity) required by an air conditioner to cool a room to 25 degrees (or any other standard temperature) is different when outside temperature is 30 degrees in comparison to when the temperature is 40 degrees. Also the usage (in hours per day) would vary as per the seasons.

SEER calculation thus involves defining annual temperature profile and usage patterns. SEER standards have to be different for different countries as every country has a different climate profile. And thus BEE has defined Indian SEER or ISEER in short. Let’s look at the various terminologies used as part of the definition:

  1. Cooling Seasonal Energy Consumption (CSEC) – Total annual amount of energy (electricity) consumed by the equipment when it is operated for cooling in active mode.
  2. Cooling Seasonal Total Load (CSTL) – Total annual amount of heat that is removed from the indoor air when the equipment is operated for cooling in active mode.
  3. Indian Seasonal Energy Efficiency Ratio (ISEER) – Ratio of the total annual amount of heat that the equipment can remove from the indoor air when operated for cooling in active mode to the total annual amount of energy consumed by the equipment during the same period.

To calculate the total annual electricity consumption the assumption used is that the Air Conditioner will be used for 1600 hrs through the year. Annual temperature profile used is based on weather profile for 54 cities across India. Below is the temperature distribution used:


The ISEER thus calculated will be used to provide star ratings to various models of air conditioners. Below are the defined ranges of ISEER for various star ratings:


What Information Will You Get From Manufacturers?

A lot of what is mentioned above is technical jargon. For an average consumer the most important thing to know is to understand the information provided by the manufacturers. Here are the things that will be available from the manufacturers:

  1. Rated Cooling Capacity (100% Load): This is the marketing tonnage or marketing cooling capacity. Inverter Air Conditioners have variable cooling capacity and a 1 ton inverter AC may vary its tonnage from 0.2 ton to 1.2 ton. But they are marketed as 1 ton inverter AC. Rated Cooling capacity for a 1 ton inverter AC would be 1 ton. As per BEE standards there is a tolerance of ± 5% for this value.
  2. Rated Cooling Capacity (50% Load): BEE has asked manufacturers to provide power consumption at 50% capacity. This is not the minimum cooling capacity, but the 50% of the total capacity. In case of 1 ton AC it would be 0.5 ton. But this does not mean that it cannot go below 0.5 ton.
  3. Maximum Cooling Capacity: This is the maximum cooling capacity. As in the example above of 1 ton, it would be 1.2 ton.
  4. Rated Power Input (100 % load): This is power consumption in watts when the AC runs at 100% load or at the marketing tonnage.
  5. Half Power Input (50 % load): This is power consumption in watts when the AC runs at 50% load or at the marketing tonnage.
  6. Maximum Power Input: This is power consumption in watts when the AC runs at the maximum tonnage that the Air Conditioner can achieve.
  7. Cooling Seasonal Energy Consumption (in kWh): This is the annual power consumption as measured per BEE standards mentioned above. Please note, that this number is for 1600 hrs and actual number for you will depend on your usage and temperature of your city when you use the AC.
  8. ISEER: This is the ratio of total heat removed and total energy consumed. This is the ideal number to compare two ACs as your usage of AC may vary and thus the electricity consumption may not be the same as the number mentioned in Cooling Seasonal Energy Consumption.

How Does Star Rating Of Inverter ACs Compare With That Of Fixed Speed ACs?

Comparing the Star Ratings of ACs across segments (window, split and Inverter) has been the biggest source of confusion for most consumers. Unfortunately the standards that have been defined do not help remove the same. The concept of ISEER can be used for fixed speed ACs as well, but from what we know as of now, it will not be used. The rating standards of fixed speed ACs will remain the same based on EER.

However from what we have seen, even a BEE 2 or 3 star rated inverter AC would be equivalent or better than BEE 5 star rated split AC of fixed speed type. And any inverter AC would be much better than any window AC.

Has BEE Started Rating New Inverter AC Models?

The new standards are voluntary till the end of 2017. Which means, manufacturers can sell AC models with or without star rating till end of 2017. As star ratings for ACs are quite popular amongst the masses, many manufacturers will try to get their models certified by BEE, but it is also possible that you may get models that are not rated. It will be beneficial for consumers if they start insisting on star rating and demanding manufacturers to sell only star rated ACs.

When Will BEE Make It Mandatory For All Inverter AC Models To Be Star Rated?

From the year 2018 onwards, all models of inverter ACs will have to be star rated. Manufacturers will not be able to sell non-star rated inverter ACs.


Star Rating labels for Inverter ACs is a welcome move by BEE. Inverter ACs have raised the bar for energy efficiency of air conditioners in India and labelling will further improve the efficiency. The future looks bright and soon air Conditioners will not be a big strain on electricity bills.

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  • kishor

    hi can you suggest me best 1 Tone Inverter AC for my home,i am looking below 30 to 40k (if you can suggest 4 model i want to search in shops,dont know its available in my city) thank you


    Hi Abhishek
    First of all thanks for your advice,Currently I am using a Volta’s 1.5T AC in my big room,but i am disappoint because of voltage drop problem in my area (Transformer not enough capacity) these AC canot work after 30min,any solution for that? somebody told put Step up stabilizer wil help you is it right ? can you suget any solutions?

  • abhay

    Hi I am small shop owner need AC’s for my shop.what about LG dual inverter Ac?

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

      LG Dual Inverter AC is a very good AC which is quite silent and as per LG it also cools faster.

  • unnikrishnan

    Dear Sir,

    I am interest to buy Godrej 1.5 ton split AC – GSC 18 MINV 3 RWPM. Can you please let me know does it have copper condenser with corrosion protection. Also please let me know any good 1.5 ton AC with copper condenser.

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

      From the information that I have, it certainly has copper condenser. RWPM models have copper. But I am not sure about corrosion protection as the information is not available from Godrej.

  • Sandeep Sharma

    Dear Sir,
    I intrested to buy 1.5 ton split AC Mitashi 1.5 Ton Inverter Split AC White (MiSAC15INv20, Copper Condenser) but they are not showing star rating is that Okay or I should go for star rating inverter Ac?

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

      Hello Sandeep,

      In general with BEE star rating you get a lot of data about a brand from an official channel. Without BEE rating you cannot make an easy comparison. But in general inverter ACs are better than BEE 5 star rated non inverter ACs. So this one should also be good. It’s just that I would have been able to confirm it had it got a BEE star rating.

  • Sandeep Polisetty

    I looked at some of the inverter AC models in one of the retail shop in Hyderabad and below 2 were costing less than others.
    LG JS-Q18APXD/2016 & Samsung AR18MV3HETQ/2017 (1.5 Ton)
    ISEER – 3.68 for LG one and 3.68 for Samsung (not much difference).

    Samsung one is new model and couldn’t find any details about it online. Sales guy in shop told that this is new model.

    I understand both of them have aluminium condenser. Not aware whether these are good or should we be going with Copper ones only? But copper ones seems to be costly and not really coming in my budget. Please suggest.

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

      Aluminium is a problem if your area is highly corrosive (having a chemical factory nearyby or a polluted river/nalla near by). Otherwise Aluminium models run good. I have personally used one aluminium one for 8 long years without any problems. I am also not able to find specs of Samsung model, but the LG model looks really good on features.

  • Deep

    Hi… I am confused as most of the people are saying that LG is not a good brand for AC.
    If that is the case, then could you Suggest a brand and model for AC inverter of 1.5 ton (with copper). The range can be between 40-45K.
    Or else If you agree that LG too is a good brand then could you further suggest models for LG too

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

      Hi Deep,

      Good brand and bad brand is a perception and the opinions will vary. It will not be possibel for me to make a sweeping statement about a brand, however, based on the feedback that we have received, LG is a decent brand. I would not say that it is the best brand out there, but it is not bad either. In fact you can get good efficient choices in quite affordable price from LG. But yes, most of their models are aluminium condenser with good corrosion protection.

      But if you are looking for copper condenser, then you may look at these:

      Hitachi RAU318EWEAS (Flipkart Link: http://fkrt.it/E~nGo!NNNN )
      Daikin FTKP50 (Flipkart Link: http://fkrt.it/z9YtOTuuuN , Amazon Link: http://amzn.to/2n5xHDa )
      Blue Star 3CNHW18TAFU
      Godrej GSC 18 MINV 3 RWPM (Flipkart Link: http://fkrt.it/zf5WxTuuuN )
      Voltas 183V IY (Amazon Link: http://amzn.to/2mjCL8a )

  • Rajasekhar

    Which is the best inverter ac
    lg js-q18atxd (Rs.36000/-)
    samsung ar18mv3hetr (Rs.36000/-)

    LG offers dual inverter, Musquito Away, Aluminium Multi flow Condenser with 5 yrs warranty iseer -3.86, Power Consumption – 1760, inbuilt stabliliser Voltage Covarage upto 290v.
    Samsung offers digital inverter, Durafin Condenser 5 yrs warranty,8 pole inverter model whose ISEER is 3.65, Power Consumption – 1780, inbuilt stabliliser Voltage Covarage upto 450v? which one is best

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

      Lg model is better I would say.

  • Kalyan

    Which is better
    LG JS-Q18ATXD,
    LG JS-Q18AUXA (Copper),

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

      JS-Q18NPXA would be the best, unless your environment is highly corrosive in which case JS-Q18AUXA would be better.

    • Kalyan

      Thankyou Sir, My House is Road Side Building, Heavy Traffic and Dust, Building Opposite Flowing Agricultural Canal but not Salt Water and not Salt Air. My Place to Sea (Beach) Distance above 40 kms. So my environment is Corrosive or not

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

      You have a agricultural canal close by. I would suggest that you go for a copper condenser with corrosion protection.

  • Vishnu Shayan

    Im confused between two 1.5 ton inverter models. One is LG and other samsung. Lg offers dual inverter ac with Iseer rating 3 star(1041units/yr) at around 39k and samsung offers digital inverter ac with iseer rating 5 star(835units/yr) at around 43k. If I use 6-8hrs per day which one is better choice ? Is it worth to invest 4-5k more for iseer 5 rating than iseer 3 rating? Which one is a good deal?

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

      Hi Vishnu,

      All depends on your annual usage and not just the daily usage. And also on your electricity tariff.

      If you see, the annual consumption given on ACs is for 1600 hrs of usage. Now you have mentioned 8 hrs, but you have not mentioned number of days. Now if I assume that you use it for 200 days, then the total usage is 1600 hrs which matches the number used to calculate annual electricity consumption.

      If so then the difference in units is 206 units. Now if you are in mumbai where the cost of electricity is Rs 11 a unit, then 206 units means almost Rs 2000 a year. But if you are in Goa where the cost of electricity is Rs 3-4. Then yearly difference is Rs 600-800. So it makes a lot of sense to buy it in Mumbai. But then one can think a bit more in Goa.

      And for this exact reason we have put a calculator on this site to help people evaluate the cost of going for different star rated AC (both inverter and non inverter). You can get it on this page: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      And that is why we first suggest people to use this calculator and then ask for models and recommendations.

    • srinivasan keshavan

      Dear Abishek,
      I am in chennai, Want to buy 1 ton 5 star or 3 star fixed ac

      usage 5 hours. a day for 6 months, budget Around 25k, what is your opinion on Ondia ac, or suggest any other brand


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

      Hello Mr Srinivasan,

      If you want BEE 5 star rated AC then you will have to go for Kenstar 1 ton BEE 5 star rated AC which you can get for 21K on Amazon: http://amzn.to/2nLscHi ….. or even Sansui on Flipkart: http://fkrt.it/tF2QJ!NNNN

      otherwise if you want a BEE 3 star rated AC then you can get good choices in Voltas.

      You can get this window AC (which is equivalent to BEE 4 star rated split AC) in your budget: Voltas 1.0 T 125DY … Flipkart Link: http://fkrt.it/XPUiW!NNNN , Amazon Link: http://amzn.to/2nxZN8a

      Or you can look at Voltas 1.0 T 123LYe (Flipkart Link: http://fkrt.it/tLztI!NNNN , Amazon Link: http://amzn.to/2n4XxHE )

  • Adishankar S

    Thank you for the wonderful site and useful information well explained. As a technical person, I had a lot of questions on the above issue and was looking for answers. I am glad that I came across your site. Thank you. Keep up the good work. God bless you!!

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

      I am glad that you found the website useful.

  • Anand Tathed

    Further I am using ac only 150 days in a year

  • Anand Tathed

    hi Abhishek I m using Samsung non star rated ac.
    Now I want to buy 1.5 tone ac.
    I am confused in buying as some dealers say that go for inverter ac and some say that go for 5 star ac.?
    I am confused which one should I buy.
    my budget is up to 45k.
    I went and saw various brands but concluded on Blue star, Daikin, Onida which one shall I buy? so also should I stick up with copper coils or can go for aluminium?
    pls help me quite urgent

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

      Hi Anand,

      You can easily get good inverter ACs in your budget. Going for inverter ACs would be better. You can get good copper models from Daikin, Blue Star and Hitachi in your budget. If you want Aluminium then Samsung and LG models would be more electricity saving in your budget.

      Choice of copper and aluminium will depend on how corrosive the environment is in your area. If it is highly corrosive then go for copper. Else you can go for any one of them.

  • Kudikala Harsha

    what is the diffrence between the smart inverter ac and dual inverter ac
    which one i should go for
    LG DUAL INVERTER AC is good??

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

      Dual Inverter is LG Technology. It is quiter and faster in cooling. Certainly a good technology. For energy (or electricity) savings you should look at star rating of the AC and ISEER values.

    • Kudikala Harsha

      LG JS-Q18APXD Dual Inverter Split Air Conditioner, 1.5 Ton
      i thought of buying this which has the rating of 3
      and ISEER RATING IS 3.2 price is 39k
      they say when we compare with non-inverter ac we can save 854 units per 200 days on an average day usage is 8hours
      in my budget can i get any other best deal other than this if u have any please share with me

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

      854 units will be its total units consumption in 1600 hrs, and not the savings as compared to non inverter AC. If you compared it with a non inverter BEE 5 star rated AC, then annual savings would be about 50-70 units (and not 854 as you got to know). In budget of 39 k, you can get LG, Samsung and Voltas BEE 3 star rated inverter ACs. But this one is good I would say.

  • Nivas

    If I use an under rated inverter AC (1 ton) EER 3.72, inplace of correct size inverter AC (1.5 ton) EER 3.86 then
    1) what is the% of increased electrical consumption
    2) is there any effect on life of the AC, as it causes more burden on AC
    3) is it cause discomfort like not cooling effectiely

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

      Hi Nivas,

      Here is my response:

      1) All depends on your room’s requirements. If your room at any time needs 1.3 tons of cooling, then 1 ton inverter AC can never match it (as it can max extend up to 1.2 ton or so). Your room will not cool to 25 degrees or below. But a 1.5 ton inverter AC can exactly match it. The EER of inverter ac is lower at peak capacity and higher at lower capacity. So a 1 ton inverter running at 1.2 ton would probably run at EER of 3.1 or 3.2 ….. but a 1.5 ton inverter AC at 1.3 ton would be running at EER of about 4 or 4.1. So you get better comfort with lower electricity consumption.

      However, if your room needs only 0.8 tons cooling then both the ACs can cool fine. But still EER of 1.5 ton inverter AC would be better.

      The only thing that one has to take care of is the lowest capacity. A 1 ton inverter AC can go down to 0.2 ton whereas a 1.5 ton inverter AC can go down to 0.5 ton. If at anytime your room needs 0.3 tons cooling, then a 1 ton inverter AC would be fine but 1.5 ton will not be fine.

      Bottom line, slight oversizing of inverter AC is better, but highly oversized may not work well. But undersizing can only be done by just about 0.2 ton from the actual requirement.

      2) May be, I am not sure. Yes, undersizing can put more burden, but then that will not happen every day. Sizing is done keeping peak summer day time in mind. But the temperature is not the same all the time. At night the temperatures are less. Even during non peak months, the temperatures are less. If it is grossly undersized, then it will always run on peak capacity and may not last long. Some people buy undersized AC thinking that it will save electricity, but then they do not understand that grossly undersized inverter AC will not save electricity. Better buy a non inverter AC if you want to grossly undersize the AC.

      3) Depends on how much is the undersizing. If your room needs exactly 1.5 ton and you put a 1 ton inverter AC then it may be good enough to bring down the temperature only to 28-29 degrees. If your room needs 1.3 tons then it may bring it down to 26-27. But if your room needs 1.2 tons or less, then it can certainly bring it down to 25 or less. And it all depends on what you find comfortable. Even 26-27 degrees is a quite comfortable for a lot of people.

    • Bhadra

      My room requires 1.1 ton cooling and your calculator recommended a 1 ton inverter. Hitachi is out of my budget. Godrej, Blue Star, Daikin and another Hitachi are within budget. However, Daikin appears to charge for installation and extras. I already have an LG window AC and was thinking if an LG inverter AC would be best for my needs?

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

      LG inverter ACs are good. But what is your budget for this AC? You can certainly use 1 ton if your room needs 1.1 ton?

    • Bhadra

      My budget is Rs 40,000 including free installation.

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

      Assuming that you spend 2-3K in installation, You have a budget of about 37K, which should be good enough to get you a 1 ton inverter AC.

      If you want copper models then these would be good (in order of energy efficiency):

      Blue Star 3CNHW12CAFU (Amazon Link: http://amzn.to/2mCL8H9 )
      Daikin FTKH35 (Flipkart Link: http://fkrt.it/tFM1t!NNNN )
      Whirlpool Fantasia 1 ton (Flipkart Link: http://fkrt.it/cCp9T!NNNN )

      Otherwise you can also look at:
      LG JS-Q12BPXA (Flipkart Link: http://fkrt.it/c1EW8!NNNN ) equally efficient to the Blue Star model listed above.
      Samsung AR12MV3HEWK (Flipkart Link: http://fkrt.it/fF4MZTuuuN ) better than the Daikin model listed above.

      If your environment is not corrosive then LG and Samsung models would be good as well.


      Sir I think your best choose is Godrej

    • Bhadra

      Godrej is out of budget. It also has a design that may not suit my room.

  • ranjith

    Hi Abhishek, You are doing a fabulous job!!! I want to purchase Inverter AC. Currently I stay in a rented house and I may move into a bigger house in the future. so I want to buy 1.5 Ton Inverter AC as I want to save electricity bill and also suggest me which one to buy?
    Samsung or Daikin or Hitachi? I have seen Samsung AR18MV5HETR(5 star inverter ac) with ISeer rating of 4.84, Daikin model FTKH50RRV16 (3 star inverter ac) with ISEER rating of 3.65 and Hitachi model with an ISeer rating of 3.99

    I am confused which one to purchase. Samsung has aluminium material where as the other two have copper.. Kindly suggest

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

      If your area is not extremely corrosive, I would suggest you to go for the Samsung 5 star inverter AC model. That would be the most efficient and Samsung in general is a good brand. They have aluminium, but they do provide strong corrosion protection.

  • Nivas

    I want to purchase 1.5 Ton AC .please suggest which is best model Daikin FTC50PRV16 3 star split AC EER 3.25, air circulation 639 CFM, auto airswing, input power 1605 watts 5 years waranty cost rs32000/- or LG JSQ18AUXA inverter 3 star split AC EER 3.86, air circulation 565 CFM, without auto airswing input power 1840 watts 10 years warranty cost 35000/-

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

      Hi Nivas,

      LG JSQ18AUXA would be a better choice.

  • Vijay

    Dear Abhishek, Your are doing Great Help to all!!!, A Big Thank you, Keep up the Great Work!!!
    I am from Bangalore, I am looking for an Ac to my room 14x10x10(LxBxH) and staying in a 2nd floor apartment with 2 more floors above, with room having balcony door and window to the west with little sunlight because of trees. Our usage will be from Feb till June. Need your advise for the following.
    1) What Capacity AC to be used?
    2) Should I go for Normal 3star or Inverter 3Star ( As difference is about Rs.10K )
    3) Which do you recommend / Suggest among Mitsubushi, Daikin, Samsung, LG, Hitachi ( Please suggest model as well if possible….please)
    4) Will there be any Noise Level difference in Inverter and normal ACs
    5) I have got Quote for 1.0 TON Daikin 3star for Rs. 28K for normal and 35.5K for Inverter ( FTKH35SRV16 )

    Also for one more Room 10x10x10 (LxBxH)

    Please advise.

  • Sachin


    Can anyone please suggest me a few 1.5 tonn Inverter ACs with 5 star rating (IEER).

    I’ve been trying to google since a while. All I get is, either 5 Star normal split ACs or split ACs with less than 5 star in real (after checking the models on their official websites).

    Having difficult time….local sellers are too much to handle these days, the moment you go into their shop, they start their sales pitch without a pause. They almost force you to buy their old 3 star normal split ACs. If I get information on models, I can write it in a piece of paper and pass it to them and ask them directly, order this model. Period. *sigh*

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

      This is what we have in our database currently (there are more coming up from LG, Samsung and Whirlpool in a month or less which we will update soon):

      VOLTAS 185V Crown (AW)
      VOLTAS 185V DYe

    • Sachin Gurnani

      Got the info from Mr. Abhishek’s article. Thank you very much.
      I am going out to check out the price from a distributor. If found the price good enough, will buy it then and there.

  • Virat9

    Hello Mr. Abhishek.. Keep up the good work you are doing.. After through research on your blog for a week cane to know about lots of valuable info.

    I am looking to buy an 1.5 ton 5 star inverter ac as suggested by your calculator. Zeroed in on bluestar model BI-5CNHW18PAFU whose EER is 4.3.

    To while shopping around came to know about samsung’s 8 pole inverter model whose ISEER is 4.9 and cost is 48K which is 6K less than blue star model mentioned above.

    What is the major difference between ISEER and EER.. Though ISEER is awarded based on seasonal functioning of the AC.. What is the mojor diff b/w these two.. I mean which is more efficient a 4.3 EER or 4.9 ISEER.. What is the equalent factor between these two.. Like X = 0. 5X

    How can we know EER value in ISEER or vice versa.

    Can you suggest me 1.5 ton 5 *star inverter with good efficiency with in my budget range i.e; 50000.

    Thanks and Regards,

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

      Hi Virat,

      5CNHW18PAFU has ISEER of 4.75. So any model having ISEER more than that would certainly be more energy efficient. So the Samsung model you are looking at is more energy efficient. There is no standard formula for converting EER to ISEER, and you got it right that ISEER is based on seasonal functioning.

      I think the Samsung model you are getting for 48K is a great deal as BEE 5 star rated inverter ACs are expensive and mostly cost more than 50K.

    • Virat9

      Hi Abhishek.. Bought Samsung 1.5TON 5* Invertet with ISEER 4.64 at 42K including all. Model # is AR18MV5HEWK. I cant find any listing page of this model on samsung website and even samsung chat support guy told the same.

      Offline store guys said that this is unit consumes 4 units for 8 hours of usage and works according to outside temperature and its some 8 pole motor design. Displayed MRP was 47K i think.. Finally he gave for 42K.

      Is it good model? And how many units it may consume *approximately* for 24 hours usage.?

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

      Hi Virat,

      The annual electricity consumption (for 1600 hrs) of this model is 834.66 units. So yes it would consume about 4 units for 8 hours usage. I think it is a good model.

  • Nagendra Prasad . Tirumalasett

    Some of sales person’s sad that “inverter AC are not good if they will get any repair cost is very high, circuit boards are getting problems and inverter models are unsuccessful”. are they sad correct or wrong?? I’m totally confused about this

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

      have been hearing this for past 3 years now :). Still lot of people are going for inverter ACs as they can feel the difference. Well the part that he is talking about is the PCB (or printed circuit board). And it can get damaged due to 2 reasons: 1) Voltage Surge (or sudden voltage increase) 2) Corrosion. There are brands that are providing protection from these factors lately. Like of LG, Samsung, Daikin actively market their voltage protection feature. Blue Star and Voltas have corrosion protection casing for PCBs.

      Now you have a reason to worry if: 1) Either your voltage supply is not proper or 2) The environment you live in is quite corrosive (good enough to corrode any electronic product in your house).

      There are ways to manage these:

      1) For voltage if you get a surge protector or a voltage stabilizer with thermal overload feature, then it can protect your PCB with bad power quality.

      2) For corrosion protection: there are several corrosion protection coatings available for electronics in market. PCBs are there in every electronic equipment and corrosion protection sprays are available for PCBs.

      Now if you know that if either one of them can cause problems then you can plan accordingly (either buy a brand that provides those features or ask the brand if they have such protection and if they can give warranty for it).

      I have personally used inverter AC for par 3 years without problems and I have known people who have been using them for much longer. And this is in Mumbai where the area is a bit corrosive due to closeness to Sea. And saying that models are unsuccessful is an absolute lie as the brands are increasing their inverter models year on year.

  • shib

    is it feasible to purchase an 3 star AC over 5 star when price diference is 6k to 8k

  • Helen

    Dear Abhishek,

    your post is very useful and i have purchase the LED lights, Atomberg fans , refrigerator and washing machines with your suggestion. even the geyser is electricity saving. i stay in Mumbai, my electricity bill is below Rs. 800/- thanks for your help!! you are doing a tremendous job. i now want to buy AC. my bedroom is 12*8*7 let me know the best energy saving inverter ac.

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

      Hi Helen,

      I am glad that you are able to save so much on electricity bills. As for the AC I would suggest you to go for 0.75 ton inverter AC for your room. I use one 0.75 ton AC for my 12x10x8 room in Mumbai. Although it is a bit small for my room, but it still cools it down to 26 degrees easily (I have measured it). It saves tremendous amount of electricity. I personally own a panasonic but my friend (again in mumbai with similar size room) uses a Daikin 0.75 ton AC. Both work fine, however I personally felt that the Daikin model was better in performance. So you can go for Daikin FTKP25 (Flipkart Link: http://fkrt.it/O!rrV!NNNN ) which is a BEE 4 star rated model or Daikin FTKH25 a BEE 3 star rated model (if you are tight on budget). Your room is smaller than mine so I think a 0.75 ton AC should work just perfect for it.

  • Praveen

    Hi Abhishek Jain I’m looking for 1.5ton 5 r 3 star rated split AC around 40k? I have two choices LG and blue star. Which one is better considering power consumption and cooling capacity.

    I heard about 3 star dual inverter AC in LG which is very latest it is very good in less power consumption compared to other brands 5 star rated AC’s. I don’t have any knowledge please suggest me a better one among these two.

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

      HI Praveen,

      There are different star rating levels for inverter and non inverter ACs. BEE 3 star rated inverter AC from any brand would be slightly better than BEE 5 star rated non inverter AC. So if you are looking for inverter AC then BEE 3 star rated inverter AC would be better. But then if your budget is 40K all inclusive (installation etc), then it would be difficult to get BEE 3 star rated inverter AC, and you will have to go for BEE 5 star rated non inverter AC only.

      If you are looking at non inverter then you can look at these:

      LG LSA5NP5A (Amazon Link: http://amzn.to/2kTfViI , Flipkart Link: http://fkrt.it/grzbcTuuuN )

      This is a copper model and would be good for you. It’s EER is 3.6 which is again quite good.

  • Nagendra Prasad . Tirumalasett

    Hi… I want to buy 1 ton inverter ac. I heard that bluestar, voltas and lloyd inverter ac are consume more electricity compared to mitsubishi, hitachi inverter ac’s. Is this right or wrong? If it is correct then how much difference there between lloyd, voltas, bluestar and mitsubishi, hitachi and other?? Please suggest me better economic and energy efficient 1ton inverter ac.

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

      Hi Nagendra,

      It varies from model to model. A BEE 5 star rated inverter AC model from Blue Star/Voltas/Lloyd will always consume less electricity as compared to BEE 3 star rated inverter AC from Hitachi/Mitsubishi.

      However, to an extent your statement is true because with a star rating (say a BEE 5 star), you will find much more energy efficient (less electricity consuming) models from Hitachi. However, Blue Star also rates quite high in efficiency these days and they do have quite efficient models.

      I would suggest that you have a look at the list of most energy efficient (least electricity consuming) ACs on this page: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      The most energy efficient model in 1 ton would be Hitachi RAU512CWEA …. but what is your budget for this AC?

    • Nagendra Prasad . Tirumalasett

      Around 40k… Inverter ac’s how much units consume per hour? My roomsize is 10x10x7

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

      You should get good models from Daikin (FTKM or FTKP) in your budget. They are highly energy efficient. I would strongly suggest that you use the calculator on this page: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      It will help you understand your monthly and annual electricity consumption of various star ratings. It will also help you understand the right size (there are several parameters other than room size to calculate the right size and the calculator takes all of them in account).

    • Nagendra Prasad . Tirumalasett

      What about O General ASGG12JLCA and bluestar 3cnhw12cafu. Which one is better?? And I want to know about coper copper and aluminium ac’s

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

      Hi Nagendra,

      The Daikin models I had mentioned were BEE 5 star and 4 star rated inverter ACs which will save more electricity as compared to BEE 3 star rated model. Blue Star 3cnhw12cafu is a BEE 3 star rated model and O General ASGG12JLCA is not rated yet, however if rated it would not be more than BEE 3 star rated. So from an electricity saving point of view Daikin FTKM and Daikin FTKP would be better and would fit in your budget as well.

      But between these two models, looking at specs I think O General ASGG12JLCA would be better.

      The brands you are looking at mostly have copper models. However, let me copy some text that I use to reply most people having confusion about copper and aluminium:

      There are two type of condensers: PFC and copper condenser. We have explained PFC and copper condenser in detail on FAQ no 13 on this page above.

      You can get more details like pictures on that page. Here is the text from it:

      a) PFC (Parallel Flow Condenser) or Multi Jet which is all aluminium. It is highly energy efficient but if it fails it need to be replaced. It can get damaged due to corrosion and thus needs good corrosion protection. Manufacturers specifically mention PFC or Multi Jet.

      b) Coil and Fin type condenser, where coils are copper and fins are aluminium. Even in this the one with anti corrosion coating (also known as blue fin/gold fin) is better. Most brands have such type of condenser. You can ask the dealer to open the outdoor and indoor unit for you and you can check if it looks blue or not.

      Please NOTE: Both copper and aluminium can corrode and in fact the coil and fin having two metals can corrode faster. The most important thing to look for is corrosion protection and not just copper or aluminium.


  • Ajit

    Hi Abhishek,

    Your posts and query resolution is quite good, but is there any chance you have idea about the best/safe refrigerant (i.e. R22, R32, R410A, etc) among the top rated Inverter AC?

    As these Inverter based AC costs quite high than regular ones, and use highly flammable refrigerants and global warming things, any scientific knowledge on this topic would be helpful.


  • badsha

    hello i am badsha, i brought ftkh50rrv161 daikin 1.5 ton ac. i want to know that how is it?

    • rohit

      Sir can u share at what price have u bought this ac and in what city?

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

      It is a BEE 3 star rated inverter technology air conditioner with annual electricity consumption of 1061 units for a usage of 1600 hrs. It is a good model and certainly better than BEE 5 star rated ACs.

    • badsha

      Thanks but i heard after buying that this model had lots of problems. is it true?

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

      I have not heard of any such complaints.

    • badsha

      Thanks a lot

  • Neeraj Kumar

    I have bought daikin inverter 1.5 ton 3 star AC my usage will be moderate so kindly tell me about electricity consumption of my AC my AC is yet to be installed

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

      Hi Neeraj,

      As per BEE data the AC would consume 1061 units for 1600 hrs of usage. These are in ideal test conditions. If your room requires less cooling then it can be less, if it requires more, then it can be more.

  • Bharani

    Could you recommend some 4 star inverter ac’s. usage would be 7 hrs a day for 200 days a year.

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

      What tonnage do you need? If you do not know then I would suggest that you use the calculator on this page: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

    • Bharani

      1.5 ton. I am reviewing these on net

      1. Diakin dtkp series
      2. Diakin ftkp series
      3. 3cnhw18tafu blue star
      4. Panasonic YS18RKY
      5. Lg BSA18IBE

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

      Daikin has the most energy efficient options in 1.5 ton BEE 4 star rating. DTKP or FTKP would be good. Both are similar models with similar technical specs. The difference is in features. DTKP will have extra air filters. So features and technical specs perspective Daikin DTKP would be the best.

  • Bhadra

    I was recommended a 1 ton inverter AC for my room in Mumbai which is of dimensions 12 x 10 x 9. I have viewed your recommendations. I was particularly interested in Godrej and Blue Star. How would these compare as opposed to Daikin and Hitachi. I also know the dealer of Mitsubishi Electric. Would this be a better alternative?

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

      Hello Bhadra,

      Godrej and Blue Star are Indian brands and certainly leaders in the segment. Daikin, Hitachi and Mitsubishi are Japanese brands. To give an analogy, Indian brands are like the Maruti Suzuki, cheaper to purchase, good economical and value for money. Japanese brands are like Honda/Toyota, expensive to buy, repairs can also be expensive (if they ever happen), but truly world class products which would last long, are highly efficient and great technology. All of them have their own pros and cons. Daikin and Hitachi these days manufacture in India although technology is from Japan. Mitsubishi still comes from Japan and is thus expensive. It all depends on your choice as to what you want.

    • Bhadra

      In your Top 10 inverter models you rate Godrej higher than Hitachi and Daikin and Mitsubishi is not mentioned anywhere. Are you sure Godrej beats these Japanese players in terms of energy efficiency and cooling. It also appears than Daikin has slipped through the ranks. How would you explain this?

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

      If you want to understand our brand perception then you may check this link on this website: https://www.bijlibachao.com/general-tips/brand-analysis-which-is-the-best-brand-to-buy.html

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

      By the way Mitsubishi inverter AC models are not yet BEE Star rated. The only brands that have got BEE star rating for inverters are Hitachi, Daikin, Godrej, Blue Star, LG, Voltas. None of the other brands have got their models BEE star rated. And it is difficult to rate models without data. The ones that are BEE star rated have their data on BEE site.

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

      The only way to explain this is that the top ten list is based purely on EER or Energy Efficiency Rating provided by BEE (Bureau of Energy Efficiency in India) on their site http://www.beestarlabel.com ….. there is no brand perception applied to the rating …. brand perception is subjective …. EER data is objective …. the top ten ratings are objective and we want people to apply their own brand perception while picking models …. just like you have a perception that Japanese brands beat Indian brands …. there is no objective number to quantify that.

  • UMESH Darji

    I want to check that this model of Mitsubishi Ac is inverter or Normal SRK13CRS-S6
    Please inform me as fast as possible.

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

      It does not have inverter compressor. It is a normal BEE 5 star rated AC.

  • Babla

    Your posts are knowledge is great on the product. I live in Mumbai – Andheri . The humidity is high and because of the Sea the corrosion is quiet high.
    Planning for 2 AC which is 1Ton and 1.5Ton as per room size. The usage is 600~700Hrs /Year. Confusion on the brands selection. Need your kind suggestion considering the high corrosion of Electronic products in the Area.
    Preference is to go with Inverter AC , so should i go with 5Star or is 3 Start Inverter AC good.
    Checked Bluestar – 3CNHW18NAFU and 3CNHW18CAFU
    AMC contract wise should i go for 1 Brand , do you suggest Kashikoi 3200i model
    Actually what i understand for your posts Blue fins anti-corrosion fins and Copper condensor is key

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

      Your usage of AC is not too high, so 3 star inverter AC should be good enough. Hitachi, Daikin, Bluestar all are good brands. Hitachi and Daikin are Japanese and Blue Star is Indian. These are top brands in general. Hitachi would be most expensive while Daikin and Blue Star would be comparable. You should certainly look for anti corrosion protection in any air conditioner. You can look at these 1 ton ACs:

      Blue Star 3CNHW12TAFU
      Daikin FTKH35RRV16
      Hitachi RAU312AWEA or RAU312EWEAS

      And you can look at these 1.5 ton ACs:

      Blue Star 3CNHW18TAFU
      Daikin FTKH50RRV16
      Hitachi RAU318AWEA or RAU318EWEAS

    • Babla

      Daikin TKP50RRV and TKP35RRV 16 also in the confusion list

  • jagdish gusani

    i have 12×14 room and want to purchase lg js-q18npxa is this primarily ok? today at salesindia the price is 30990 for today only plz reply fast if possible. i will signup afterwards plz

  • Bharani

    Hi Abhishek,

    Appreciate your responses to everybody’s queries. Could you guide me as well for my requirement.

    I have attached two pictures of the layout of my rooms. Could you let me know the ideal suggestion. I have already tried your tool and am confused :). I live in chennai. The master bedroom one will be used 7 to 8 hours for atleast 10 months a year. I presume a 1.5T inverter would be needed (but dealers confuse me to go with 1T). The guest bedroom will be used 2 to 3 days a week for again 10 months a year (around 120 to 150 days a year).

    https://uploads.disquscdn.com/images/f7199b8b1f35fc271db76ec4b8ae0a8f4d3b713de8faa817a39fd868908ff144.png https://uploads.disquscdn.com/images/8bf24b7e9eec4c6bf0d87655f8fc9d9ad39bff544b5cd240fbb14e3c63ffafbc.png


  • Mehul

    Hi Abhisek,
    Need your valuable suggestions for buying 1.5T split inverter ac for my 10*10room.
    I found LG BSA18BEYD, LG BSA18IMA, AND LG BSA18Ibe model. Kindly suggest me which one is good. And reviews about above models.
    Kindly also tell me other brands which has same features and good quality product. Can i go for Lg /voltas/hitachi/carrier
    Thank you

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

      BSA18BEYD is a BEE 4 star rated model and is the only BEE star rated model amongst the ones you have listed. It is a good model.

    • Mehul

      Thank you for your prompt reply
      Can u pls tell me whether i go for LG or some other brand?

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

      LG is a good brand. You can certainly go for it.

  • Vishnu

    hi Abhishek,

    your expert advice required in finalising the below

    Voltas 1.5 Ton 183V IY/18V IY 3 Star Inverter Air Conditioner
    Voltas 1.5 Ton 183 V EY-W 3 Star Inverter Air Conditioner

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

      Hi Vishnu,

      The ISEER for both the models is same, the only difference is in cooling capacity and 183V EY has more cooling capacity. So I think between the two 183V EY is a better choice.

    • Vishnu

      Thanks Abhi. Is there an better alternative for 183V EY

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

      If you are looking for BEE 3 star rated Inverter ACs then here are some of them:

      LG JS-Q18NPXA
      VOLTAS 183V IY
      VOLTAS 183V EY
      VOLTAS 183V DYb
      VOLTAS 183V IY

    • Hrishikesh Badawate

      Voltas 1.5 Ton 183 V EY-W 3 Star Inverter Air Conditioner ((is this 5 star?))

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

      It is BEE 3 star rated Inverter AC. If you compare it with non inverter AC then it would be better than BEE 5 star rated non inverter AC. Please note that there is difference in star rating of inverter and non inverter AC and inverter ACs are better.

  • Jagadish Babu

    Voltas 125V DYE 1 Ton 5 Star Inverter Split AC . Sir is this model advisable. we live in Trichy(tamilnadu). Avg temp is 38 degrees. Usage is 10 months.Thanks

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

      Voltas is a very good brand and you are going for one of their most efficient models. You can certainly go for it.

    • Jagadish Babu

      Thanks a lot. But some of my friends are suggesting Mitsubishi as the best choice.
      please advise one last request. pls.

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

      Mitsubishi is also a very good brand.

    • Jagadish Babu

      Thanks a lot sir. Going for Mitsubishi.

  • Vivek

    Hi Abhishek,

    I would like to go for Hitachi Kashikoi 5400i model 1.5 ton, i stays @Navi mumbai, considering the cost (Hitachi costs is on higher side) would you recommend some other brand ? also do you suggest buying non inverter Ac as cost of inverter AC is almost 30% high and considering my usage it will be only during Summer season 4-5 mths.

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

      Hi Vivek,

      Cost of electricity is high in Maharashtra and thus it is better to buy an inverter tech AC for even moderate use. However, it is not necessary that you buy the most energy efficient inverter AC. You can even go for a BEE 3 star rated inverter AC if your usage is less (4 months). You can even go for Hitachi Kashikoi 3200i which is a BEE 3 star rated model. You can even get Daikin FTKH50RRV16 or bluestar 3CNHW18NAFU. However, Hitachi model is more energy efficient in BEE 3 star rated models as well.

  • hiran mistry

    hi abhishek sir , I want to buy inverter ac for my badroom please suggestions one between two (1)voltas 1.5 183V iY (2)godrej 1.5 gsc 18 MINV WOM

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

      I am not getting much data on both to make a good comparison. But from whatever I got, Voltas model looked better.

    • hiran mistry

      Thanks sir

  • Aritro

    And sir i would be glad if you can suggest me an inveter ac for my office i need 1.5 ton and it works for about 10hrs/day..i would be grateful if u can specify me a model

  • Aritro

    Hello sir,
    I have some confusion i would be grateful if you clear it.. Its

    1) i have two years old inverter ac(2013)installed so are they 1/2/3/4/5 star?

    2) you have written 3star inverter ac means almost same or better than a 5star fixed. Then why all these years companies used to say any inveter ac is better than 5star?

    3)what is the difference between smart/digital/V inverter?

    4)is dual inveter better than single one?

  • vikas

    hi abhishek sir ,

    can you tell me about

    Blue Star 3CNHW18CAF/U Inverter Split AC (1.5 Ton)

    it says it has blue condensor fins for anti corrosion and Filter: Catechin filter, silver ion filter, anti bacterial filter, anti acarien filter, active carbon filter and dust filter

    so please help with
    details like iseer for this model ?
    so that i get know how efficient it is , the main motive to buy is efficiency ( in this price bracket , otherwie i also checked that hitachi one which you mentioned here in other posts but that is bit costly for me )

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

      Hi Vikas,

      Blue Star 3CNHW18CAF/U is a BEE 3 star rated model with ISEER of 3.55. It’s annual electricity consumption as given on BEE data is 1120 units in 1600 hrs. However, the actual number will vary based on situation. The specs look good and you can certainly go for it.

  • mranal

    is there a problem with inverter ac’s PCB circuit in indian conditions?

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

      There are two things that can impact PCB: 1) Corrosion: if the environment is highly humid it can damage the PCB (but then it can damage PCB of any AC, not just for inverter AC). 2) Power Surges can damage PCB. Power Surges can be caused by short circuits or bad wiring. Manufacturers these days are coming up with protection for these possible causes. So I would not say that every inverter AC can have this problem.

    • mranal

      thanks for the prompt answer, i wish to go for bluestar inverter hot and cold model, will that be fine?

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

      Depends on the model you go for. Not all inverter ACs are energy efficient. You have to choose one with high EER for cooling. Make sure that the EER is more than 3.3 (for cooling).

  • Dhruv Verma

    Hello Abhishek,
    I live in Amritsar, where Temperatures annually reach around 45C. My room is 180sqft and it’s on first floor without any successive floors.
    Can you suggest me an AC around 35k? My usage is moderate.

  • Krishna

    Pls dnt buy HITACHI KASHIKOI 5400i a.c….. Worst ac …. No cooling …. Pls dnt promote it…. Fake it is not able to cool even at 38 degree celcius


    I would like to purchase an inverter based split AC for my bedroom, whose size is 14x10x10 (in feet, LBH). One of the walls faces direct outside heat. I reside in Thane. My typical usage daily during summer months would be nearly 6-8 hours. I have checked your online calculator, but confused on what capacity and rating to go for, as Maharashtra has the highest electricity charges in the country, I want to optimise the recurring costs. Am also not sure which brands are value for money. I look forward to your valuable suggestions and advice. Please suggest. Thanks for your time.

  • LTD

    Hi Team,

    We purchased 4 number 1.5 ton 5 star A/c from Blue star and fixed around 4 years back and it was working fine.

    Few months back one A/C started giving problem as cooling is not happening and ice started forming. We called local A/c Technician and he had told that gas got leaked and it needs to be refilled. Once gas refill AC was working properly for 2 months and again same issue repeated and when we called the same A/C Tech person he told the coil provided is Aluminum and it got worn out and needs replacement and better go for copper coil or just top up with gas to work for some more time.

    We opted for refill again to check to find out whether coil is the problem but few months later same thing repeated. Between that we have encountered same issue in all other 2 A/c Units and really gone mad this time.

    We called the Blue star customer care this time to assist with the current situation and person from Blue star also saying the same.

    The reason he is saying “5 star rating blue star A/c comes with Aluminums coil and all got worn out need to be replace”. He is charging for 5500 for coil + 3000 for gas top up and this has to be done for all the three A/C units.

    We are confused now with the quality as we paid huge money assuming that we are purchasing top brand and 5 star rating. We feel that we are cheated and how to make sure the coil is the problem and is that aluminum coil really gives this type of problem.

    I read your article Aluminum Vs Copper coil but still can’t understand the reason company says.

    Can you please advise how to go about this? Kindly help

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

      The coils get bad due to corrosion. Corrosion can happen both in copper as well as aluminium. But copper one is easy to fix. In case of aluminium, it needs replacement.

      Corrosion especially happens when you are close to a water body or you are in an environment which is highly corrosive (it can be due to industry close by or nallah close by).

      It is always good to buy an AC with good corrosion protection, and preferably copper condenser if you live in a corrosive environment.

      The problem does not happen much if you are not in a corrosive environment. I have one which is running well for 6 years now and has aluminium condenser.

      This problem is not with all BEE 5 star rated ACs. You just need to choose the one that has corrosion protection and copper heat exchangers.

      Look for Blue Fin Condenser or Gold Fin Condenser or in general corrosion protection for condenser/evaporator.

    • LTD

      Thank you so much Abhi for your time and advise.

      Is that Blue Fin & Gold Fin are Product of Blue star?? approx how much will be the cost of an good corrosion protection condenser available in the market.

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

      Blue Fin and Gold Fin are available in lot of brands. Not just in Blue Star. I am not sure of cost of a good condenser with corrosion protection.

    • LTD

      Thank you…!!!!

  • ronie

    hello abhishek sir,, I want to buy a 1.5 ton Inverter ac and I’ve shortlisted hitachi kashikoi 5400i, mitsubishi

    MSY-GE18VA and
    Daikin FTKP50QRV16
    . tell me which one is the best in terms of features and engery efficiency. If you could suggest me any other 1.5 ton ac that wud be highly appreciated.

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

      Hitachi Kashikoi 5400i is best in terms of features as well as energy efficiency.

    • ronie

      thank u sir

  • Sameer Majethia

    Hi Abhishek – I am looking to buy 2 ton 5 star inverter ac in mumbai. I am looking at super energy efficient, best quality, copper ones. Can you suggest latest top three to four acs available in market currently that I should go for? Thanks

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

      You may also look at Daikin FTKM71 which is a 2.2 ton inverter AC.

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

      The most efficient ones are either from Hitachi or Mitsubishi. You can look at these:

      Hitachi KASHIKOI 5200I (RAU424AWEA)
      Hitachi NEO 4200I (RAU424EWEAD)
      Hitachi ACE 4200I (RAU424EWEAS)
      Hitachi KASHIKOI 5300I (RAU424IWEA)
      Hitachi KASHIKOI 5400I (RAU424CWEA)
      Mitsubishi Electric MSY-GK24VA

    • Sameer Majethia

      Hey how is Hitachi RAU324EWEAS 2 ton inverter as compared to above ones u suggested… Also could you give please provide price range of all the ones u suggested

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

      Hi Sameer,

      The model you shared is a BEE 3 star rated inverter AC. The ones I shared are BEE 5 star rated inverter AC. The difference is in energy savings (BEE 3 star rated AC would consume 100-200 units extra per usage of 1600 hrs). The ones I shared would cost you about 57-63K.

  • Fawaaz Shariff

    Hi Abhishek Sir,

    We are making a small cafe which has glass on the ceiling and on one wall side. Area is around 280sqft. ( 8.75′ * 32′ ).
    Its very hot especially during the afternoons, like a glass hot box. We donot have much ventilation.
    Do u think one 2 Ton Invertor Ac is enough to bring down the temperature.
    We just want it to be pleasant inside. We have 5 wall fans for the air to spread around.

    And if 2 Ton which of these models do you reccomend?

    1. Hitachi 2 Tons Invertor Split Ac ( RAU324EWEAS )
    2. Samsung 2 Tons Invertor AC AR24JV5HBWKNNA
    3. Carrier Superia plus ( LARCARRIER-SUPEPLAN55505F690E106 )

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

      You should better go for 2.2 ton inverter AC (although I am not 100% sure if it will be able to handle heat from the glass walls). A daikin FTKP71RRV16 should be good. Try putting some heat reflecting films (like those from 3M that just block the heat), to control the heat in the cafe.

  • mayur

    Hi Abhishek sir,
    1) I want to buy a 1.5 ton split Ac or an 1.5 ton inverter tech. Ac i have sorted Godrej GSC 18 GIG 5 DGOG, GSC 18 FG 8 MOG and Hitachi KASHIKOI 5400i please tell which will be better for me.
    2) If i bought Godrej GSC 18 GIG 5 DGOG any accident may cause because it contain R290 refrigerant as it is highly flammable.Any measure have adopted by Godrej to avoid such accident.Is it safe to install such kind of ac at home.
    3) Also tell any other ac model which will be good for me with similar specification if any.

    Thanks alot in advance.

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

      Hi Mayur,

      If Hitachi Kashikoi 5400 fits in your budget then I would say Hitachi Kashikoi 5400. Certainly a better brand and yes safer refrigerant. Instead of Godrej you can also get Voltas BEE 5 star rated inverter AC. 185V CROWN (AW) or 185V DYE are also quite efficient. And if you are interested in premium brands then Mitsubishi Heavy Industries have highly efficient inverter ACs.

  • bharath

    Hi Abhishek,

    I would like to purchase split AC, My budget would be below 30k, 178sqft room located in first floor. I am from Vellore souther part of India. Vellore is the hottest city in Tamil Nadu. My yearly usage less than 1000 hours and per unit cost less than 5. I have checked your online calculator I have decided 3 star split AC based on the criteria but I am really confused which brand suits for my location. Please suggest. Thanks for your time.

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

      Hi Bharath,

      I would suggest that you go for Lloyd ACs. You can look at these models from Lloyd:


  • Amit Tiwari

    How is Daikin Invertor FTKH50QRV16 . Is it correct that its not efficient compare to other series. It dont save much power it has only ISEER 3 raiting.

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

      FTKH is the least efficient series by Daikin. It’s EER is 3 (not ISEER). I would suggest that you look at Daikin FTKP series.

    • Amit Tiwari

      In my area only these two inverter models are available

      Daikin Inverter FTKH50QRV16 – Rs46,000
      Hitachi ACE 4200I (RAU418EWEAS) – Rs53,000

      I will be using the Ac in my bangalore office. My office runs 24×7. So do suggest which model shall i buy.

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

      Hitachi RAU418EWEAS would have better energy efficiency. I would suggest to go for that.

    • Amit Tiwari

      Thanks buddy but is it good to spend that much money on intvertor Ac when u can get LG 5 start at Rs35000 i.e Rs17,000 extra , as in bangalore the summer is only for 2 months max . But my usage in those two months will be around 16 hours per day.

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

      Hi Amit,

      In your previous message you mentioned that the AC will be for your office and the office is on 24×7 and in such cases it was absolute must to have the most energy efficient inverter AC. Situation now is very different when you mentioned that you will be using it only for 2 months, but 16 hrs a day. Your usage now is about 1000 hrs a year (or may be less than that). In that case, even a BEE 5 star rated AC would be fine.

  • Aditya Agarwal

    Panasonic ISEER at 10.26
    As seen in their manual model YS24RKY 2 Ton
    Can this be right ?

    Is there any way to compare with star rated invertors of Hitachi/Volatas with who are not voluntary at of 2016 like Panasoni/Carrier

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

      The difference is in the unit of measurement of EER value. A value in Btu/W-hr is 3.41 times more than the value in W/W. The numbers greater than 9-10 are usually in Btu/W-hr while the numbers less than 5 are in W/W. So to compare apples to apples, you need to divide 10.26 by 3.41.

      There is something wrong in their specification sheet that you have given. For first few models the ISEER numbers between 3-5 are right, because ISEER is in W/W ….. but then the models where ISEER numbers are given above 10 is wrong because it is not ISEER. It is EER in BTU/W-hr ….. any model that has ISEER will also have a star rating which is missing for those models.

  • Mahendra

    Dear Abhishek,

    First up, kudos to bijili bachao team’s amazing work. All your articles are very relevant and easy to understand, even for a novice like me. Your impact on educating masses on energy savings thus by protecting environment – is much higher than any government initiative. Stupendous work.

    We recently bought Panasonic 1 Ton Inverter AC – (CU-YS12RKY). So far so good. However since this is the first time I started using an AC, I have few doubts

    pertaining to the usage of AC and some features in it.

    Please spare your time and try to answer these queries. Much appreciate your answers.

    I hope I am clear in putting across my queries.

    1) What does each of the different modes (Auto, Cool and Dry) mean in my AC. What is the impact on compresson vis-a-vis electricity consumption

    with each of these modes?

    2) When I put in auto mode, shouldn’t the AC automatically calculate the current room temperature and set the ‘ideal’ temperature/speed/swing without any manual inteference? Asking you because I am able to change

    the temperature/speed/swing even when I set AC in Auto mode

    3) Since I am using an Inverter AC, is it better to keep it running when not in use for a short time during breaks (for example breaking for dinner etc

    which accounts to say 1/2 hr). Am I right to assume, shutting off and switching on causes more electricity consumption than keeping it on in; since it is an Inverter AC which has varying cooling capacity and input wattage?

    4) I stay in Hyderabad where the temperatures in summer can go as high as 44-45C with little or no humidity. What is the ideal mode I should use in these conditions. I know it is a very subjective topic but in a general usage sense what would be the ideal settings in an Inverte AC?

    Once again, thanks much for your time.

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

      Hello Mr Mahendra,

      Here is my response:

      1) Cool mode is regular mode where the AC will operate normally to achieve the set temperature. Auto Mode is similar to Cool Mode, just that it will try to achieve the set temperature faster. So it would cool room to a lower temperature first so that it feels cold quickly and it will then revert to the set temperature. In dry mode, the most important objective of the AC is to dehumidify the room first and then return to the set temperature.

      2. I guess 1st response should help you understand Auto Mode.

      3. If the break is short (1/2 hr or less) then you may leave the AC running.

      4. You can use regular cool mode. It should be good enough.

    • Mahendra

      Great! Many thanks Mr Abhishek for your responses. Is there a way I can endorse your work on FB or some other media? You deserve lot of recognition and appreciation.

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

      Hello Mr Mahendra,

      We are glad that you liked our work. We are on all social media and we keep sharing our work there. It will be really great of you if you can share our work with your friends and family. That way we will be able to reach more people and create more impact. Sharing a word about Bijli Bachao will mean a whole lot to us.

    • Mahendra

      Dear Abhishek,

      Sure thing! Keep up the fantastic work at Bijili Bachao.

      Good luck.

  • http://www.vkvraju.com vkvraju

    Hi Abhishek,

    First, I would like to thank you for sharing your knowledge on this portal. I see that you reply to almost everyone’s query and that too with ease and grace. Not an easy task at all. Thank You for doing that.

    We are looking for a split AC model. Our room is around 13 X 11. It has one more floor above it. West side has a window of about 4 X 2 size. There is a vacant place on the west side. So, evening Sun would be there.

    We live in Chennai and we would use the AC for 5-6 months in a year. Few hours a day.

    Have few queries. Hope you can help answer:
    1. We were told that Inverter 1 ton is almost equivalent to 1.5 ton star rated AC’s. Is that true?
    2. If we buy a high tonnage Inverter AC for a room where a lesser tonnage model is sufficient, will we be unnecessarily spending more on electricity?
    3. Should we go for Inverter model or 5 Star rated model? If Inverter, will 1 ton model be sufficient?
    4. Would you recommend Blue Star 3CNHW18CAF/U (1.5 ton) or CNHW12CAF (1 ton) models? Or should we look at Daikin, Hitachi, etc? Anything from Indians brands that are equally good and energy efficient with less complaints?
    5. Are stabilizers needed for Inverter models? If so, what capacity?

    Sorry, if these are too many queries. Going to be our first AC purchase.
    We are hoping to make a decision soon so that we can beat the heat wave.
    Hope you can help/guide us.

    Thanks in advance,

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

      Hi Raju,

      I doubt that 1 ton inverter AC would work for 143 sq ft room, but then you can check it based on your city, room size and room location using the calculator on this page: https://www.bijlibachao.com/top-ten-appliances/best-air-conditioner-ac-window-split-hitachi-lg-carrier-samsung-electricity-consumption-tonnage-in-india.html

      Now for your questions:

      1) 1 ton inverter AC is NOT equivalent to 1.5 ton star rated AC. An inverter AC can at max stretch by 0.2 ton, so a 1 ton would stretch to 1.2 ton, but not 1.5 ton. But then it depends on the need of your room. If your room needs 1.2 ton and you go for a fixed speed (non inverter) AC then you may have to go for 1.5 ton fixed speed AC (as there are very less 1.2 ton models). But then you can go for 1 ton inverter AC. But if your room needs 1.4 tons of cooling then you have to go for 1.5 ton inverter or non inverter AC.

      2) Oversizing is NOT a problem for inverter ACs. In fact it is better to oversize as at lower capacity an inverter AC is more energy efficient. So a 1.5 ton inverter AC of same nominal EER as a 1ton inverter AC would have better efficiency when it runs at 1 ton capacity as compared to 1 ton inverter AC.

      3) I would suggest that you use the calculator. It will suggest you the right tonnage (both for inverter and non inverter AC) and will also suggest you if you should go for inverter AC or BEE 5 star rated AC depending on the rates of electricity in your city.

      4) BEE has introduced Star ratings for Inverter ACs as well and Indian brands like Voltas and Godrej do have BEE 5 star rated inverter AC. But then looking at your usage, I think BEE 3 or 4 star rated Inverter ACs would also work well for you. There are other indian brands like Onida, Lloyd and Videocon that have inverter ACs. But then I would recommend going either for BlueStar, Voltas or Godrej. I haven’t seen a very efficient inverter AC model from Blue Star yet, but Voltas does have good models and I think would be a great choice.

      5) It is not necessary to have voltage stabilizers for Inverter ACs. If power quality in your area is bad, then you should get surge protection for the AC. But nothing more than that.

    • http://www.vkvraju.com vkvraju

      Thank You very much for your responses. We have sort of dropped BlueStar
      from our list of choices now. Hitachi seems to be the most power
      efficient. However it is very expensive. We are hoping to get some
      offers. Currently, evaluating between Hitachi, Daikin, Godrej, Voltas.
      Also, as you suggested, we might be looking for more capacity than 1
      ton. Thank You again

  • Anand

    Hi Abhishek, we brought new Daikin FTK Model AC, for first two days there was no water dripping, but on third there watar was leakage from in door unit. and out door unit is producing so much heat, we have old samsung ac there is sound from that unit but there was no heat but in this new one less sound but too much heat. does all the above is normal in new AC’S? please Suggest .

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

      Indoor unit would leak water only if the drainage provided is not proper. Sometime the drainage pipe gets twisted or choked which results in leakage of water inside. The water is basically humidity of the room that condenses on the evaporator coil. And it needs drainage. While installation a regular pipe is put along with copper pipe to drain out the water.

      Outdoor units do produce heat. That is how they are able to take heat from inside the room and push it outside. If it is effective then it should produce heat outside.

    • Anand

      it is producing so much heat, should I ask for replacement.

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

      I would suggest that you call them up and get it checked.

  • Pan Dot

    Hi Abhishek, from your comments it seems that you are a big fan of Hitachi AC. But I have found that quality of their ACs is much lower than Daikin ACs and Hitachi service in Delhi is really terrible. My Hitachi split AC repeatedly breakdown and their technician just have no idea what is happening with the AC and then the 1st one would say they need to send some expert for it. As I have 2 Daikin Split AC (3 star) I have found them to be much more reliable and silent, of the 2 only 1 gave me some problem for 2 times in last 5 years and other one has not given me any problem and the chillness in air thrown by Daikin AC is more than Hitachi AC. I am ruing my decision to go for Hitachi AC, I wish I had gone for Daikin AC.

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

      Hi Pan Dot,

      I am no fan of Hitachi. When people ask for most energy efficient AC, then without applying subjectivity, just looking at numbers, Hitachi comes out on top. Many people specifically ask for HItachi. I have always mentioned that if I have to apply subjectivity, Daikin is my personal favourite brand. But then my choice will not match with everyone else’s and people have different experiences. You will find negative reviews of Daikin as well on the internet (check some review sites like mouthshut). There is not a single brand that can make everyone happy. There will be some or the other complaints about every brand. You may have faced terrible service from Hitachi. Someone else in some other city may face similar thing with Daikin, because ultimately people providing service are humans. And you can have good and bad people anywhere.

    • Ajay

      You seem to be right.

  • Anand

    Hi Abhishek, I have ordered for Daikin ftkp50QR16 but i have received ftkp50RR16, seller is telling ftkp50RR16 is latest model, but i got to know that In latest model bacteria filter is not available, do you have any idea deference in this two models if so please tell

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

      Hi Anand,

      In our data collection, at present we do not capture information up to filter level. So I really won’t be able to tell the difference between last years model and current year model. From the basic specs that we capture, both are same. And yes RRV models are the latest models. PRV was used in 2014, QRV in 2015 and RRV in 2016.

  • SASH

    All power consumption calculations for ACs assume compressor running for 80% of the time. How much is the savings in power if the AC is set to maintain room temperature at 28 degrees instead of 22 degrees?

  • Nishant


    I am looking for an AC for my hall 220 sq. feet in Mumbai. I stay on 2 nd floor in 6 story building. And face direct sunlight on the west side of hall late afternoon.

    My usage as per my calculation is 600 hrs and maximum 700 hrs. in a year.

    I tried the online calculator on bijlibachao site but it recommends either 3 star and if I gradually increase my usage then recommends inverter AC. In recommendations it doesn’t at all recommends 5 star AC.

    I got the size 1.5 ton. But please recommend me on the star of the AC as per my usage of min & max hrs.

    Big thanks in advance.


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

      Yours is a borderline case. You can even go for a BEE 5 star rated AC, but for 700 hrs in Mumbai I would not recommend going for BEE 3 star rated AC. In fact for people in Mumbai I always recommend BEE 5 star or Inverter AC only. You can go for a BEE 5 star rated AC as well.

  • Varun Chandiok

    Hi Abhishek
    Currently I am using a Voltas 182CY window ac (2star, 1.5TR), i live in close proximty of an open drain and due to this there have been frequent gas leakage (3 occasions in 2years) i also have an issue with electricity consumption, during summers the avg units we consume are between 800-900 units using a single ac and atmost 2 Fan at any time, but during winters i have an average consumption of (80-100) units, i use the AC for about 6-7 hrs a day. There fore i am looking for purchasing a new AC, and am confused with buying a 5 Star window ac or an inverter AC. Please suggest which one to go and the brand/model i should considering i will run the AC for 8-9 hrs a day and also it should be durable enough to resist corrosive environment. Also i am getting an offer of Rs 46,000 for Blue star 1.5TR inverter AC(this includes standard installation), should i go for it (keeping in mind corrosive environment) or shell 5-6K more for a Daikin ac or should opt for a 5 star window AC?

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

      Hi Varun,

      You should NOT go for window AC. You will not get efficient model. Secondly considering your usage, you should go for Inverter Tech AC. It will save you a lot as 800-900 units is a lot. Hitachi, Daikin, Mistusbishi Heavy, Mistubishi Electric, Sharp, Voltas all will have models more efficient than the blue star inverter AC. You should go for an AC with good corrosion protection and with Copper condenser. The brands I have listed will all have copper. If you think you want to go for Daikin then Daikin FTKP series model would be a good choice.

    • Varun Chandiok

      Hi Abhishek
      First of all thanks for your advice, i have just purchased an 1.5 ton hitachi Kashikoi-3200i, it was able to cover the issue for electricity consumption and with 8 hrs of operation during night the total of 5 units were consumed and as for the durability of the product only time will tell if it can stand the corrosive environment.
      Once again thanks for your advice

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

      Thanks a lot for sharing your feedback Varun. 5 units in 8 hours sounds good for a BEE 3 star rated Inverter AC.

  • Binoy n

    Hai Abhishek
    What. is your opinion on TOSHIBA inverter ac. .
    As Daikin and Hitachi is out of stock the dealer is insisting on taking Toshiba. Kindly advise

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

      I do not have direct feedback on Toshiba, but their specs look good. The COP value is around 3.52 which would make it about BEE 4 star if they get BEE star rating. They use R410A, however, they have not specified the condenser type on their website: http://www.toshiba-aircon.co.in/product/8/105/15-tr-cooling-only-ras-18n3kcv-in.html

      The specs look good, but I cannot comment on their quality. You may take a call.

  • Faiz Ahmad

    Hi Abhishek Jain,
    First i would like to Thank you for your wonderful work!
    i have Room on Top Floor, direct sun light. now days Temp is 43 degree centigrade , May & June is Coming.
    i m planing to buy 1.5 T Inverter AC. Pls help me to choose best Inverter Ac, which is Energy Efficient, more Reliable, durable and best cooling
    technology .budget does not matter.


  • Premal Mehta

    Hi Abhishek

    You are doing an awesome Job. Lots of queries been resolved. I am looking out for an A/C and based on the calculation on the Calculator I am getting recommended for 3 Star Split AC. Now Which Make and Model Should i go for..I am stay in Chandigarh top floor direct sunlight and 6-7 hours of usage for 4 months.

    1. Daikin DTC50QRV16
    2. HItachi RAU318AWD
    3. Voltas 185 DY.

    Kindly Guide me

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

      Hi Premal,

      Of all the models you have listed, Hitachi Zunoh is the most energy efficient. It is almost BEE 4 star. Daikin model is the next. Brand wise all three are good brands but finally the choice depends on which one provides good service in your area. If Hitachi is good, then going for it would be no-brainer. Else you can try Daikin and finally Voltas.

    • Premal Mehta

      Thanks Abhishek,

      Sorry , The Hitachi Model is RAU317kwd which cost around 37K & 39k (small & Big body). Is this model efficient then Daikin model.?

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

      Hi Premal,

      RAU318KWD is better than Daikin model but 317 model is not as efficient. In that case Daikin model is better.

  • Raj Sharma

    Hi Abhishek,

    I want to buy an inverter AC, am receiving a quote of Rs 40,000 inclusive of installation and stand, from a friend (AC dealer) in Amritsar, Punjab.

    Model is Onida INV18MVL 1.5 Ton.

    Can you please suggest something quickly, as it’s too hot here in Amritsar, so would like one installed quickly.


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

      Hello Mr Sharma,

      Onida is a good economy brand, however electricity consumption of this model is on a higher side. You can easily get Daikin FTKP, or Samsung, or Sharp model in just a couple of thousand more. And they would be more efficient.

    • Raj Sharma

      Sorry I missed out vital information: Room is 12x15x10 ft, with sun on top and one side. Usage is 5 hours a day, for five months, annually.

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

      I would suggest that you use the calculator on this page to calculate the right size, get a suggestion on star rating and compare electricity costs of various star ratings:


    • Raj Sharma

      Thanks Abhishek. The tools here will help me surely and will update you about my decision after that.

  • naresh amilineni

    Hi Abhishek,

    I am looking at buying an inverter AC of Godrej NXW 1.5 ton. Please suggest if its an good model, they are giving 10 years warranty for this NXW range.
    It’s costing around 52K. Has an BEE rating of 5 star for inverter model. Or can go for Hitachi or Daikun or Voltas models.


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

      Godrej’s NXW series is highly energy efficient. However you must know two things: 1) It uses Aluminium Parallel Flow Condenser 2) It uses R290 gas which is essentially is similar to LPG (I have heard people complain that mechanic filled in LPG …. without knowing that R290 is actually similar to LPG :) ).

      It should not fail if you do not live close to sea (or a water body). If you are close to sea, avoid it.

    • Naresh Amilineni

      Thanks Abhishek. I have purchased it. I live in Bangalore

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

      I don’t think it should have corrosion or gas leakage problems in B’lore. I think you are good to go with it.

  • B. Dev

    Hi Abhishek

    I have gone through various discussion boards and articles in this portal to acquire knowledge on split ACs and its specifics in India.
    I plan to buy 2 split ACs anytime now and furnished below are my requirements and queries. Please advise.

    Size: 1.5 tonne
    Category: Inverter
    BEE Star rating: 3
    Preferred Brand: Hitachi and/or Daikin

    Can you please suggest me some models that I can look to buy?
    Also, would you suggest I should go for 2 machines of the same brand or try out both brands ?

    Thanks & regards
    B. Dev

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

      Hello Mr Dev,

      Hitachi, Voltas and Lloyd are the only 3 brands that have BEE 3 star rated inverter ACs. Daikin has BEE 4 and 5 star rated inverter ACs. You can look at these Hitachi ACs:

      KASHIKOI 3200I (RAU318AWEA)
      NEO 3200I (RAU318EWEAD)
      ACE 3200I (RAU318EWEAS)
      TOUSHI PRO 3200I (RAU318KWEA)

      Going for same brand would make it easy for you to manage service contracts.

  • Manish

    Hi Abhishek,
    I am Manish, and only after reading your several articles i am thinking to buy an air conditioner of 1.5ton, Voltas Iris 183V IY, which is an inverter ac and rated 3 star in Voltas all star ac range. It costs me around 40k from snapdeal and i need your opinion whether its a good to have product or not.

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

      It is a good product. BEE 3 star rated inverter ACs can be better than BEE 5 star rated non inverter ACs. And Voltas is a good brand with all copper models.

  • Nitin Sehgal

    Hi Abhishek,

    Thank you for sharing extremely valuable information on Inverter ACs. I require a 1.5 Ton Inverter AC for my Baedroom. My average Usage per day will be about 10 hours for next 7 months. I have short listed few of these models but really confused which one to go for. Could you please advise, which model shall make more sense:
    Samsung AR183V5NBUK Triangle Inverter Ac 1.5 ton – Stabilizer Free with 10 years warranty – Rs 52K
    Bluestar 1.5 ton inverter tech 3CNHW18CAF/U with Anti corrossive Blue condessor Fins – 5 yrs compressor warranty – Rs 43K
    Hitachi 1.5 inverter RAU318EWEAS with copper wiring – 5 years compressor warranty – Rs 44K
    Hitachi 1.5 inverter I clean RAU01814EA with 5 star rating – Precoated aluminium fins – 5 yr compressor warranty – Rs 43.5K
    Sharp 1.5 Ton Inverter AHX18PETW – 5 yr compressor warranty – Rs 52K

    Although my Budget is 45K but I can extend by 5-6K if it offers better energy efficiency in the long run along with better tech and features such as auto dust & bacterial filters etc.

    Please advise if I can get an even better model in this price range which is not mentioned in the above list. Which one shall be the best buy out of the above mentioned list.


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

      Hi Nitin,

      I am not able to trace some of the models you have mentioned. In general Hitachi and Blue Star are quite good in reliability. Sharp is also good. Even Samsung can be good if your environment is not very corrosive. Samsung uses multi flow condenser which is all aluminium. Which is highly energy efficient but in case of corrosion would need replacement (cannot be repaired). Samsung has started using corrosion protection for the condenser, however people do try to avoid aluminium condenser (especially if environment is corrosive). Otherwise Samsung has quite high energy efficiency models.

      The two hitachi models you have listed are old models (from last year). These do not appear on Hitachi website now. Also their EER is just ok.

      If you are ready to spend up to 52K then I would suggest you try Daikin FTKM/ATKM or Hitachi Kashikoi 5300 series or Daikin FTKP/ATKP series. These are quite energy efficient. Godrej also has some BEE 5/4 star rated models that can fit in your budget, but again they have multi channel flow condenser.

  • Fatima Siddiqui

    Hello Mr. Abhishek,

    I would like to thank and congratulate you for your knowledge, cause and promptness. You are doing a commendable job!

    I used the calculator given on this site, and it suggests a 1.5 Ton AC (for both types Regular & Inverter AC).
    Our usage is around 6 hours per day and for around 5 months a year

    I am living in Gurgaon & our locality is dependent on diesel generator sets for power supply for past 2 years. Electricity rate is Rs 14 per unit !
    Now i need your expert assistance & humbly request you to please respond at your earliest convenience, as i have to go tomorrow for purchase.

    My budget on higher side is upto 40k. Please suggest which brands/models/AC type should i consider for 1.5 ton split AC, keeping the electricity cost into account.

    Thank you so much for your time and help.

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

      Hi Fatima,

      Your tariffs are quite high and in the calculator we have taken tariffs of electricity supply from Haryana state electricity distribution company which are quite low. In fact at your tariff and usage it is highly recommended to go for an AC that is as efficient as possible. In such cases I would have recommended you to go for an Inverter Technology Air Conditioner of at least BEE 4 star rating (BEE rating of Inverter ACs and not fixed speed ACs). But getting an inverter technology 1.5 ton AC in a 40K budget is impossible. The best you can get in that budget is a BEE 5 star rated fixed speed AC of either Whirlpool or Voltas (e.g Whirlpool 3D COOL PLT V (1.5 T) or Voltas 185 JY or BlueStar 5HW18SAF).

      If you can extend your budget by 4-5 K, you may get an Inverter Tech AC by Voltas (and some other brands as well). And that would be much better considering your electricity tariff. The extra money will payback in 2-3 years of usage (in terms of electricity savings).

    • Fatima Siddiqui

      Just to add to above mentioned, the calculator on this site suggests BEE 3 star. We are on 1st floor of a G+2 building.

  • Nishant Vyas

    Hi Abishek,

    The type of knowledge you are sharing unique and really helpful .I want one suggestion for buying the ac so let me tell you my requirement of ac
    1-I want a split ac
    2-I live in Delhi 3rd floor which is top floor and get direct sunlight.
    3-my room size is 13*10*10
    4-and budget is 40-45k

    I am bit confuse between bee 5 star ac or a inverter ac kindly suggest me that what should I buy of which brand

  • http://sites.google.com/site/saurabh21club/ SAURABH

    Can you please tell if Vaayu airconditioner is good enough to purchase. http://vaayuindia.com/

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

      Am hearing about it for the first time. Looks more like an air cooler than AC.

  • Sidharth Thallancherry

    Hi Abhishek,

    First of I thank you for your wonderful work in not just having informative articles but also in assisting people personally for all of their queries.

    I have finally decided on an AC and I need a 1.5tr inverter AC. I live in Bangalore and would mostly use the AC for about 8-10 hours during the day. I have been able to settle down on two options and initially I had a strong inclination towards Hitachi Kashikoi 5400i series but then I’m surprised that most of the retailers or big outlets(croma,reliance) do not have this model plus I have heard some really bad reviews for Hitachi’s service. The other alternative I planned on and the one I now have a strong inclination towards is Daikin FTKM50QRV16(unless you feel there are better models).

    I would really appreciate if you could share your thoughts on these two models and/or their differences and features.

    Cost wise Hitachi would cost me an extra 10k compared to Daikin. However, I want to know if I am gaining something beneficial in terms of efficiency and quality when I pay extra.

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

      HI Sidharth,

      Hitachi 5400 and Daikin FTKM are certainly the most energy efficient models, but it is not necessary for everyone to purchase the most energy efficient model unless you really have such a high usage. It all depends on your annual usage of the AC (not just the daily usage).

      Also do note that the price of Daikin models usually do not include costs of installation kit (which would be additional 4-5k) whereas Hitachi comes with installation kit.

      Now 8-10 hours usage in B’lore is slightly on the higher side. B’lore is usually quite pleasant and I do not think your annual usage would be too high. In that case even a BEE 3 star rated or 4 star rated inverter AC would also work out great. Daikin has FTKP series which is quite good and Hitachi has 5300 and 5200 series that are good. Even Voltas has good BEE 3 star rated inverter ACs. You can consider them as well if your usage is not super high.

  • nagireddy mahender reddy

    Namasthe sir,
    Sir I bring Samsung 1.5 ton inverter ac model number AR18JV5HATQXNA OUT DOOR UNIT AND ON IDOOR UNIT AR18JV5HATQNNA.MY FRIENDS FRIEND 10 months back purchase 26/05/15 but they not installed because of transfer . I puchase from him it’s 2015 model 2 days back 10 yr compr.warenty and 5 yr condenser warenty is thre live ..but iam not installed now. My doubt is some body saying Samsung ac are bad inverter ac also consume huge electricity.give me sugetion. How much power consume in 1 hours. I plan to use afternoon 3-4 hours and night 5 hours total 10 hours may be in upto July middle. Can I change model or install.this Inverter ac better daiken 1.5 5 star or not.power consume the same ?. Give me best sugetion before install in 2-3 days. My room size 10/13. 130 sq—–cooling capacity 5000. And powe 1410 watts.

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

      I do not think that Samsung inverter ACs are bad ACs. In fact their energy efficiency numbers are quite good. They should not consume a lot of electricity. This inverter AC should be better than Daikin BEE 5 star rated fixed speed AC.

  • VSS

    hi Abhishek,

    I was scouting for a 2TR Inverter Split AC for my room (208Sft). Reading your articles, I’ve narrowed down to Mitsubishi, OGeneral, Daikin, & LG. Most of the major and big retailers (Bajaj Electronics, Croma, Reliance Digital, Adishwar etc) don’t cater to this 2TR inverter segment split ac’s. incidentally I live in Hyderabad(Telangana).and its become a difficult proposition to even scout the market as no retailer/dealer seems to be interested in this category. Infact Daikin FTKM series is not available with the Daikin distributor(Telangana) itself and when I follow up with other brand players/companies directly they don’t seem to be interested either, what a tragedy.

    Different brands suggest/recommend a 5kVA stabilizer, while Daikin has a inbuilt stabilizer. Mitsubushi Electric (ME) authorised dealer said I dont need it though the model MSY-GE24VA doesn’t have a inbuilt stabilizer. Interestingly the place where I live is having frequent short duration power outages this summer, Is this going to be a factor on emphasizing for a Stabilizer? Rest other brands recommended that I buy a 5kVA stabilizer.

    One of the vendor suggested that I consider Mitsubishi Heavy Industries (MHI), and that a 1.5TR inverter split model (SRK-18 YN-S /Micro Inverter model) and (SRK-18 YL-S /Hyper Inverter Model) would suffice for a 208 Sft room as it’s a product of MHI and is equivalent of 2TR’s of other brands. Is this true? Can you spot the differences between these two MHI models and enlighten me? http://www.iaplgroup.com/split… . If i’m not asking more, in addition can you compare and contrast between MHI, ME,. If you are hard pressed for time then NO complaints from my end.

    I’m also curious to know if the above brands have a strong ASS (after sales service) presence in the twin cities of Hyderabad/Secunderabad.


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

      Hi VSS,

      Your comments are not showing up on the site as you have embeded a link.

      Well Daikin models have higher operating voltage range of 160-260V and that is why they say it does not need voltage stabilizer. If your voltage drops below 160 then it would need stabilizer. But voltage drop below 160 is quite unlikely.

      Also one should not confuse power cuts (outages) with voltage fluctuations. They are two very different things. Power cut does not mean voltage fluctuation. A 2 ton AC would certainly need a 5 kVA stabilizer (if the operating voltage range of AC is not high).

      MHI has more robust technology than ME. Although the difference is not huge. And yes MHI has models with high airflow rates which does allow to cover a larger area. However cooling capacity is also important. If your usage is mostly at night then 1.5 ton inverter AC should work well for you. During the day it will not provide you chilling cool, but should be able to cool till 26-27 degrees which is also quite comfortable (I mostly keep my ac at 26-27 both in office as well as home :) ).

      I am not sure about the after sales service of various brands in Hyderabad so will not be able to comment on it.

  • Rajendra.P.Habib

    Hi Abhishek,
    Your suggestions and advises are very helpful.I thank you for rendering such a great job. Previously I’d seeked your help regarding water heater,it’s features and specks are superb and thanks for that.Now fortnight back I’d bought an Ac Daikin 3 star 1.5 ton.The area where I live is densely covered by greenery,due to this the climate remains very pleasant.We use fan only in summer.Pls let me know the difference between 5 star inverter ac and 3 star non inverter.My usage per year would be 1000 to 1200 hrs.Abhishek sir, i wish to know the unit which i bought fullfils my requirements or not?


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

      I cannot give you the exact number, but at a very high level, a BEE 3 star non inverter 1.5 ton AC would consume about 1.3-1.4 unit per hour while a BEE 5 star rated inverter AC would consume 0.5-0.6 units per hour. In 1000 hours the difference would be of about 700 units in a year. If your rate of electricity for last slab is about Rs 5 then it means that the saving per year is about Rs 3500. However a 3 star non inverter AC would cost about 35-40K while a BEE 5 star rated inverter AC would cost about 50-55K.

  • Ranjeet

    Hi Abhishek,
    I am a regular visitor of your site and really appreciate your technical expertise.
    I think you can help me to clear a technical doubt regarding the energy units.
    We know that 1 ton of refrigeration = 3.5 KW, Now, my doubt – Is this KW rating is anyhow related to electrical KW or wattage of the air conditioner. ?? I am really confused of the mechanical watts and electrical watts. I think my question is strange. Please do help…


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

      Hi Ranjeet,

      1 ton or 3.5 kW is the cooling capacity of the AC. Watt is a unit for rate of energy. It can be rate of energy consumption or rate of energy extraction. And heat inside a room is energy. 1 ton or 3.5 kW is the rate at which heat is extracted from a room. The term ton came from the fact that in past, ice was used to cool a room. And 1 ton AC is equivalent to 1 ton of ice for cooling a room. But 3.5 kW is not the electricity consumption but rate of removal of heat from the room.

    • Ranjeet

      tnx abhishek.

  • Imran

    Hi, Abhishek,

    May i know what is the difference between SRK-10YL-S series and SRK-13YL-S series in Mitsubishi Heavy duty inverter ac. I am bit confused , want to opt for 0.8ton (which is srk-10yl) but has a noise level of 59db while the srk-13yls 1.1 tonne has a noise level of 22-31-43 (l-m-h) db noise level. Can you help me out.

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

      Hi Imran,

      SRK-10YL-S and SRK-13YL-S are two models from the same series having same features but different tonnage capacity. Where did you get the data for 10YL as it is not mentioned on their official website: http://www.iaplgroup.com/heavt-duty-hyper-inverter.html

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

      Infibeam is funny, they have put 2.5 star for the AC :). Well 0.8 ton would be 2813 watts of cooling. Power consumption of this AC is 670 watts. So EER would be 2813/670 = 4.2. This sounds fantastic. However I did check some reviews about this model online and they do say that inside unit is noisy. So looks like 59 db is right.

    • Imran

      Dear Abhishek,

      Thanks for the prompt reply. Can you recommend anything good in the same segment with EER above 4.0-4.2 around 0.75-0.8 ton in inverter segment having inside unit completely slient(something between 19 to 40 db).

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

      Hi Imran,

      Daikin FTKM or ATKM or DTKM would be equally efficient and silent too.

    • Imran

      Hi Abhishek,

      Thx for the reply, how if i go for Kashikoi 5400i(RAU512CWEA) 1.00 toone. Will that be more efficient than the previous one. Ignore the price. Electricity bill is more important for me.

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

      If your room needs 0.75 ton then you can certainly go for 1 ton inverter AC. That will be more energy efficient. Kashikoi 5400 is the most efficient model out there in the market.

    • Imran

      Thanks for the reply.

  • Subhasis Biswas

    Hi Abhishek!

    Thank you so much for your time for my messages. I have bought the 2 ton inverter split ac (Hitachi Kashikoi 300i 2 ton), a few weeks ago. I want to know that since this is inverter it’s variable tonnage right? Another thing when I run the ac in cool mode with temp at 24 c the cooling is fine and the outdoor unit is almost noiseless. Does this means it is reducing it’s cooling capacity? Also when I run it in powerful mode again at 24 c the cooling happens within seconds but the outdoor unit is extremely noisy during this time. This means it’s working at it’s max cooling capacity right?

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

      It certainly is a variable tonnage AC. And your understanding is right. In powerful mode, it will run at peak capacity, while in cool mode it will optimize the cooling capacity or tonnage. As long as you are comfortable, I would suggest you to keep it in cool mode.

  • Dipe Chatterjee

    My take on Hitachi Air Conditioners:

    In 2006, I bought a Hitachi Window 1.5 T Quadricool Twin Motor AC. The specs were too compelling to be ignored. As the launch had not yet happened, I spoke to the company, and bought it from Hitachi directly.

    I was not disappointed. Performance blew away the competition. Set at an energy-saving 25 degrees, it made the room cold enough to require a comforter during Mumbai summer nights. And the impact on electricity bills… most of my neighbours were paying in excess of ₹4,000 pm, while we were cool and comfortable, and paying about ₹1,200 pm (up from ₹790 without AC).

    The AC is still running, quietly, 10 years later. But there is a flip side, and that is Service & Support…

    Initially, Hitachi used to outsource their Service to local ‘mistry’ shops. By the third warranty servicing, they had managed to break off most of the plastic louvre nobs, bent the cooling fins (palms pressed flat against the fins, to push the AC back into its housing), and broken all the plastic clasps of the grill. Hitachi responded that ‘plastic parts are not covered in warranty’, and ignored the fact of gross mishandling.

    At the last warranty take-down service (wet), the ‘mistry-s’ shorted the AC’s PCB. Hitachi said warranty was over, and since I did not have an AMC to cover the replacement, I’d have to pay for it. I called the Service Head and gave him a piece of my mind. Within a few days, he came over personally, with the replacement, and had it fixed. Also took a cheque for AMC.

    Thereafter, there was a gas leak (₹2,700), PCB malfunction (₹3,000), plus Comprehensive AMC costs (approx. ₹2,400 p.a) every year. Unluckily for me, the problems would happen in-between AMCs, so I had to pay. Nowadays, Hitachi says they have their own technicians; I have not noticed any difference in the quality of service from the previous outsourced mistry-level.

    As I look back, I’ve spent almost the same amount as the buying price for the AC’s upkeep. For the last 2 years, I’ve decided to go to my neighbourhood AC guy, and pay a substantially lower sum for problems.

    The question is, would I buy another Hitachi AC? Technically, there’s no question about the performance of its top-end split ACs. The issue is Support, and that should give you some pause…

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

      Thanks for sharing your feedback. Service quality is a challenge with most brands. Service is a very human dependent thing and a brand’s reputation lies with the serviceman who is fixing the product. And once a brand’s sales volume increases, you can only be lucky enough to get good service. It is happening with most service brands in India (e.g. people are complaining about drivers from Ola, Uber … Oyo and Zo are not able to keep their promises and people are complaining about service from other service brands as well). I personally feel that it is extremely hard to scale a service business in India without loosing quality. Or you follow Apple strategy where you sell expensive so that only few people buy it. That way it becomes a niche product and you do not have to significantly scale your service. On top of that outside India I have observed that Apple would just replace the product if there is a fault. So it makes is very customer friendly and one does not have to depend on service scale.

      I am not sure which city are you from, but we have heard complaints about Hitachi service in Kolkata and Delhi.

      LG, Samsung, Voltas, Godrej seem to have largest service network. However even they have outsourced it at some locations. Japanese brands are in a catchup game with them as far as service is concerned. However Japanese products are of high quality.

    • Dipe Chatterjee


      You’re right of course. Service quality and scalability in India is a major disappointment.

      I now live in Mumbai, but have lived in multiple cities in and out of the country. And my area of expertise is in a related field, marketing and brand management.

      Having worked for some of the biggest brands in the world (including Apple), I used to be amazed at how little attention is paid by brand and category heads in India to actual consumer delivery and support. Here we spend months and crores on advertising strategy, but zilch on post-purchase relationship management. Managers just don’t get it, and those who can be persuaded, hesitate, due to unpredictable ROI. The insurmountable issue is attitude at the last-mile service delivery level. This ‘chalta hai’ attitude in India is way too deeply ingrained; even high spends by a brand doesn’t alter it.

      Eventually, ‘service for any brand’ will develop as a separate, standalone vertical that brands will subscribe to. Insurance TPAs was a bad beginning, but Flipkart is trying something new, as are a lot of others.

  • Dipe Chatterjee

    Hi Team,
    Seems like some technical glitches on the site. Some pages accessible in Firefox (partially) but not in Safari. Still haven’t been able to access the update on inverter ACs in Safari.

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

      Can you try again now? This should be fixed on safari.

    • Dipe Chatterjee

      Thanks Abhishek,
      Yes it is working now in Safari.

  • Sidharth Thallancherry

    Hi Team,

    Could you please let me know the latest ranking of AC’s with the new models taken into consideration. I’m looking to buy a 1.5 ton inverter ac in Bangalore and would appreciate your help on this.


    Hello BB Team
    First of all a big salute to all of you for all these informative articles.I am binoy from Kerala.I am looking for an inverter ac for my bedroom having an area of 178sqft.The room height is 9.5 ft.There is a built in covered wardrobe upto the room height covering an area of 13sqft.If I consider that area then my room size is 165sqft only.There is a construction above the roof and so no direct sunlight on the roof.A wall on the south side gets direct sunlight for a few hours.Some calculators in the internet suggest for using 1ton ac(daikin online solution plaza and lg site) and others 1.5 ton.The calculator in BB site is showing a tonnage of 1.2.The daikin dealer in my town is insisting on taking 1ton FTKM model.I am ready to take the 1.5 ton model but the problem is that i am really confused.Kindly help me to chhose the right tonnage inverter ac.Eagerly awaiting BB Teams response.

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

      Hi Binoy,

      Oversizing is not a big problem if you go for inverter AC. Even if you buy a 1.5 ton AC and your room needs 1 ton cooling, then the AC will adjust accordingly. Daikin FTKM is a great model and is BEE 5 star rated as per new star rating standard for inverter ACs. 1 ton sounds a bit small for 178 sq ft (even for 165 sq ft). However climate in Kerala is not too hot. But I still think 1.2 ton sounds more reasonable. You may go for 1.5 ton inverter AC as well.