Electricity Saving Tips For Homes And Offices

Tips to choose the best brand air conditioner

By on January 21, 2014

Air Conditioner A few days back we published an article on tips to buy an air conditioner (link) and since then we got several requests from people asking for tips to buy air conditioner. Although we covered most things related to technology on that article but there was one thing that we did not cover: which is selection of a brand. And this came up consistently when we discussed about air conditioners with people. The most common statement that we received was “all this is fine, but which brand should I buy?”. At Bijli Bachao, it is our consistent effort to be impartial in our tips and ideas and we try to avoid naming brands. We make sure that our suggestions talk more about technology rather than endorsing a specific brand. So we will try to answer this question as pragmatically as possible.

There are multiple bands of Air Conditioners available in Indian market and it all makes it confusing for people to decide on which brand to buy. Although we had published an article in the past covering various brands of air conditioners and the number of energy efficient air conditioners that they offer (link). But the list is more on numbers, market share and BEE star rating. We also have a link that lists the top ten air conditioners by energy efficiency (link) but that is again only on BEE star rating. When someone decides on a brand, the decision goes beyond numbers and is equally qualitative than quantitative. Air Conditioners can contribute about 30-40% of electricity costs in a household so it is very important to make a right choice while buying one. So here is our analysis:

Air Conditioner brands that are known for their air conditioning technology

There are some brands that are known for their Air Conditioning technology. These companies have done extensive research on the subject of cooling and provide the best in class technology. Their models are energy efficient and also last longer than most air conditioners. In few of our energy audits, we have observed that models of such brands give higher efficiency even when they are quite old (obviously they need to be maintained well as well). But better technology makes them last longer and provide better efficiency.

Most such brands are expensive to buy. So the capital cost is high, but the efficiency factor makes them pay back for themselves in terms of energy savings as well as longevity. The caveat is that they may not have service centers available in smaller cities, which may make maintenance of the air conditioner a little difficult.

Generic brands that are into multiple appliances

There are some brands that sell a lot of kinds of appliances and are generic. They may not be expert in cooling technology, but the models that they offer are above average. Because of their focus on multiple things, their models may not be the best in the market, but they provide very competitive pricing. Models of these brands are slightly cheaper than those of the brands with “best technology”. These may turn out to be value for money if the use of air conditioner is not very high.

Many such brands have larger market penetration and thus their presence is there in remotest of locations in the country. Getting access to their service is quite easy, and thus regular maintenance of these models is possible.  Many of these brands have energy efficient models but the longevity of those will not be as good as the ones with “best technology” brands. But as said, they can be great value for money if the use is less.

Inexpensive brands

There are some brands that provide cheapest models in the market. It is an observation that they hardly focus on energy efficiency and thus most of their models are low on star ratings. These brands may provide inexpensive models but the lower energy efficiency increases the electricity bills. If they use is high, they can significantly increase your electricity bills. As we discussed in one of our previous articles that it is not just the capital cost that is important while buying an appliance, it is also the operating cost that is important (link and link). Most appliances consume more money during their operation than while buying, so it is a factor that one needs to keep into consideration. If you are really challenged with money and do not have any option then buy an inexpensive brand, but keep a note that it can increase your electricity bills.

Finally going for a brand also has a lot of emotional factors and people prefer buying a brand because of their good experiences in the past. And that also matters a lot. The guidelines that we have given above can help you identify with a brand, but ultimately it is your brand preference that will make you choose one. It is good to keep one thing in mind that an AC bought will be with you for almost 10 years, so make the right choice keeping in mind all the costs involved.

Have question, doubt or comment? Leave a message

There Are 119 Comments

  1. raju chavan says:

    Hi I am Raju. I have to purchase new split inverter a/c for my flat. My flat is on top floor. The area of my flat is 120sq ft. and at south east direction 56 sq ft window, which is covered by sun control film. I have to purchase inverter A/c. Can you please help/ guide me, which brand is cheap and best available in mumbai market

  2. shalini says:

    Hello,
    I have narrowed down my search to two brands,which one do you think would be a better choice in 1.5T split AC – Voltas or Daikin?

  3. Chandran says:

    Hi Mr.Abishek,i appreciate your efforts..
    I Live in the Hot city of Trichy,Tamilnadu,I am planning to buy a split ac for my house,I live in the first floor (no house above)
    room dimensions as follows…

    12x9x9 (ht)
    12 wall exposed to west sun and has a 18 sqft window
    9 wall exposed to north and has a 18 sqft window
    and we have loft full of things (3 sides of the room)
    and they are not covered,and no false ceiling done.
    we only 3 people sleep there,we require ac for 3-4 hrs/Night only,,,

    online tools estimate my tonnage to 1,but a local ac technician says that my loft is the culprit and it will require 1.5 T

    at present we have a panasonic cube ac (1.25 T) 2 star which isn’t cooling as it used to be 2 Years back,
    (even that wasn’t cool enough like the LG does in my neighbour’s house)
    and it makes lot of noise,and more importantly i suspect it consumes a lot of electricity

    please,suggest me an efficient split ac and the tonnage required within a budget Rs.40000/-

    awaiting your reply
    Chandran

    • Abhishek says:

      Hello Mr Chandran,

      What is the size of the loft? It can certainly be the culprit as when you use Air Conditioner, everything that is kept in the room, and every corner of the room gets cooled. So if you have a loft full of things, the AC will cool them as well. As per regular calculation tonnage for your room comes out to be 1 ton.

      Also did the 1.25 ton AC cool well 2 years back? Did the lofts have similar amount of stuff at that time as it does now?

      Regards,
      Abhishek

  4. Monica says:

    Hi Abhishek,

    I stay in Bangalore and plan to buy an AC for my bedroom – size 18×17. My apartment is on the first floor and there are a total of 4 floors. Pls suggest the models (inverter and non-inverter), tonnage and energy efficiency. I am so glad to have found this blog….too many options to choose from.

    Thanks for your help.
    Monica

  5. C.S.Shankaranarayanan says:

    Hi Abhishek
    Many thanks for your kind reply
    I would be happy if you would clarify the following doubts
    1) How is performance of LG and voltas 1 ton inverter AC
    2) I heard that inverter AC has more electronic components than conventional AC which are sensitive and are susceptible to damage from fluctuating voltage and also the spares are costly
    3) inverter AC is better only in areas where there is continuous usage all year round where as in place like mysore it will be used in peak summer for 2 months
    4) Does inverter AC use copper coils in indoor and condenser unit
    5) I have also heard in normal AC (other than inverter) more the efficiency or the star rating copper coils in condenser gets replaced by aluminum coil is it true like in voltas 1T after 3 star rating copper coil gets replaced by aluminum coil in condenser. is aluminum coil equally efficient to copper coil
    Clarification of These points would help me in better AC selection.
    Anticipating your reply.

    Regards
    shankar

    • Abhishek says:

      Hello Mr Shankar,

      Here are my responses:

      1) Have heard good review of LG inverter AC, but have not heard anything on Voltas yet. If you buy a voltas, do let us know.
      2) All ACs needs a stabilizer if there are voltage fluctuations (both non inverter and inverter). Inverter does have more digital components, but if you have fluctuations, then stabilizer is important.
      3) Not really, load varies even between day and night. Days are hot, nights are colder and Inverter AC can help in the same. Even between months, March is less hot than May. So inverter will save some electricity. However the economic benefit of the savings will depend on your hours of usage and electricity rate. If your usage is only for 2 months, then most likely it will not pay off early.
      4) It depends on manufacturer. Carrier Superia Plus Inverter AC is 100% copper. But many others are not.
      5) Again depends on manufacturer. Many of the Carrier BEE 5 star rated models are 100% copper.

      Hope this helps.

      Regards,
      Abhishek

  6. Shankar says:

    Hi
    I wish to buy an AC with inverter technology for one bed room at first floor for my house in Mysore karnataka
    The dimension is 11 feet X 10 feet
    What is the tonnage i should select
    Which is the best model
    The model should be economical viable among all the inverter models
    The quality of service of the company should be good
    Requesting your quick response

  7. Marzi says:

    Hello Abhishek,
    I am from Pune, I would like to know the requirement for inverter as well as non inverter Ac in my bedrooms which are both 12 x 14 sq ft. Usage will be 99% only in the night time about 6-8 hrs everyday in summer time. Above is open terrace with sunlight hitting it in peak hours of the day.
    You have a great blog going here keep it up.
    Marzi
    Pune

  8. SujoyBiswas says:

    Hi Abhishek,
    I live in Kolkata and am planning to buy an ac for the master bedroom in my flat.
    The room dimension is 13*12 feet(156 sq.ft). My flat is on the top floor of a G+4 story apartment block.
    The roof is exposed to sun directly and there are two glass windows facing south-east (total area about 40 sq.ft)
    The room already has a provision for split ac and I would prefer to buy one.
    Duration of use would be 5 hrs a day for 25 weeks in a year.
    It would be good if you can let me know the tonnage, brand and model of the most energy efficient ac which would suit me most.I am not averse to an inverter ac even.
    SujoyBiswas
    Kolkata;13/4/14

    • Abhishek says:

      Hello Mr Biswas,

      Your room would need about 1.7 tons of cooling on peak summer day time. If you go for inverter AC, then you would need 1.5 ton inverter AC. Sharp AH-XP18PMT (EER 4.41), Sharp AH-XP18PHT (EER 4.41), Daikin FTKM50 (EER 3.8), Hitachi Ace Inverter (EER 3.8), Hitachi iClean Inverter (EER 3.8) have some of the highest EERs in this range. You can choose between anyone of them.

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  9. ARUN says:

    I wish to buy a 1.5 ton inverter ac. I’m confused between various models of Hitachi and LG. Which one should i go for and why ? Your efforts will be appreciated.

    • Abhishek says:

      Would suggest you to go for Hitachi ACE inverter as it has higher Energy efficiency ratio. Also the Follow Me technology of Hitachi can help you keep the temperature of AC higher thus saving electricity (it will sense your presence and blow the air on your side).

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

      • ARUN says:

        Thanks Abhishek for your valuable input
        What about LG BS-Q186C8R6 ?
        And are SHARP ACs reliable ?
        Just being curious and greedy to know as you have mentioned Sharp ACs in your various recommendations.
        I’m from Delhi and trying to buy my first ac.

        • Abhishek says:

          Hi Arun,

          Sharp started selling ACs in India just a year back, but they have been selling ACs internationally since quite some time. They are focussing primarily on Inverter ACs in India (they have very few fixed speed models). Their energy efficiency ratios are quite high as compared to other brands. And we got a few good feedback about the models as well. That is why I have recommended it to people. But if you do not feel comfortable, you can go for any of the established (in India) brands. LG is a good brand. The model you listed has slightly lower EER than hitachi and that is why I recommended Hitachi. But you can go for LG as well.

          Hope this helps.

          Regards,
          Abhishek

        • Abhishek says:

          Hi Arun,

          Sharp started selling ACs in India recently. They also manufacture in India to keep the price low. They mostly have inverter models and that too of various tonnages (0.75, 0.8, 1 , 1.1, 1.25, 1.5, 1.75, 2). Very few other brands offer tonnage less than 1 or between 1 and 1.5. And tonnage requirements of rooms vary and although inverter tech can cater to varying tonnage, but from a cost perspective, if your room’s requirement is 1.3 tons and you can get a 1.1 ton inverter AC for less, then why go for 1.5 ton (unless you are not happy with the brand itself). In case of fixed speed ACs, putting a 1.5 ton AC for a requirement of 1.3 ton means not running the AC efficiently. In such case even if you put a BEE 5 star AC, it will be as good as BEE 3 star AC of 1.3 ton. That is when inverter tech works well and you need ACs of mid tonnage range. Plus on top of it we observed that Sharp has quite high EERs (Energy efficiency ratios) as compared to similar tonnage models in other brands.

          Now we got a few good feedback on Sharp and that gave us confidence on recommending Sharp. But it is new and if you are not comfortable then even LG is a great brand. You can surely go for LG as well.

          Hope this helps.

          Regards,
          Abhishek

  10. Ram says:

    Hi Abishek,

    I live in Chennai. Am at first floor in a 2 floor apartments. Am planning to buy 2 ACs tomorrow – Room1 – 11×13, Room2 – 11×11. Both rooms have a 2 row 3 column windows.
    My expectation is it should give a good life with decent cooling and middle class affordable maintenance. Which brand so you suggest? The showroom I inquired suggested me to buy Godrej Eon(2 models in display) which comes with green gas and one had 6 star, other had 5 star. Please suggest as to what is the best recent model.

    Thanks,
    Ram

    • Abhishek says:

      Hello Mr Ram,

      Sorry I did not see your next message before replying. Room 2 needs a 1 ton AC, whereas Room 2 needs about 1.2 tons of cooling. If you are concerned about energy saving, then you should go for Inverter tech AC. If you go for inverter tech, a 1 ton inverter tech AC will be good for both the rooms. You can go for any of these models:

      Sharp AH-X13PET (1.1 ton inverter tech compare india price Rs 32100)
      Sharp AH-XP13PMT (1.1 ton inverter tech snapdeal price Rs 30813)
      LG BS-Q126B8R8 Max tonnage 1.15 ton, Price about Rs 39,999 (on compareindia)
      LG BS-Q126B8A4 Max tonnage 1.15 ton, Price about Rs 42,990 (on reliance digital)
      Carrier Kurve Inverter AC, Price about Rs 35,488 (on compareindia) — Carrier also has a superia inverter range for which price is not known to us.
      Daikin 1 ton Inverter FTKE35, Price about Rs 35000 (on snapdeal)
      Mitsubishi has MSYGE13VA (price of which is not known to us).
      Voltas Delux (DC Inverter) 12V DX 1.0 Ton, Price about Rs 39,990 (on Naaptol)

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  11. Sachin Mohite says:

    Thanks Abhishek for the reply

    What are the cons for 1 ton inveter AC for 11*8 sq ft room?More electricity consumption.

    I asking you as chances of moving to new house in future so 0.75/0.8T will not work for room size of 120 ft.

    • Abhishek says:

      Hi Sachin,

      There are no cons of 1 ton inverter AC. Best thing about inverter AC is that it can adjust its tonnage and adapt accordingly. Just that you pay more to buy a 1 ton AC :).

      Hope this helps.

      Regards,
      Abhishek

  12. guruprasad says:

    Hi Abhishek,
    I live in Chennai and planning to buy an ac for the guest room in my house.
    The room dimension is 12*10 feet. My house is on the 1st floor of a 4 story apartment block.
    There is no roof exposed to sun directly. However, the room has a window facing east.
    The room already has a provision for window ac and I would prefer to buy one.
    However, It would be good if you can let me know the brand and model which would suit me most.
    I am looking for an energy efficiency as well.

    Regards
    guruprasad

    • Abhishek says:

      Hello Mr Guruprasad,

      As per the size of your room and the other conditions, a 1 ton AC would be good enough for the room. Now as it is a guest room, I think the use of AC will be less. Now we typically do not recommend going less than BEE 3 star AC, but in case of window Air Conditioners, the star rating is one level low (or BEE 5 star rated window AC has similar energy efficiency as BEE 4 star rated split AC). So here are some models that can be good:

      1 ton BEE 5 star rated window AC (equivalent to BEE 4 star split AC):
      Whirlpool Magicool Platinum V (1T)

      1 ton BEE 3 star rated window AC (equivalent to BEE 2 star split AC):
      Onida 1 ton 3 star W123TRD
      Carrier Estrella Plus GWRAC012ER030

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  13. Abhijit says:

    Hi Abhishek,

    I stay in Hyderabad, where its very hot and dry. I am planning to buy inverter A/c for my two bedrooms. The master bedroom is 208 sq ft with just one window and isn’t exposed to direct sunlight. The guest bedroom is 150 sq ft and has french windows. However, the guest bedroom window is east facing and gets on morning sunlight. Also can you suggest me the brand? I am planning to go for Hitachi ACE Inverter. Thanks for your help.

    • Abhishek says:

      Hi Abhijit,

      You need a 1.5 ton inverter tech for the bigger room and 1 ton for the smaller room. Hitachi is a very good brand. Instead of Ace I would suggest that you look at Kampa or iClean inverter versions from Hitachi.

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

      • Abhijit says:

        Thanks Abhishek. Can you tell me why kampa is better tha Ace. Also, I was reading somewhere that the iClean feature is not the great and still regular servicing is required. What’s your take on iClean?
        For 1 ton inverter I liked sharp inverter as well. Can I go for it?

        • Abhishek says:

          Hi Abhijit,

          My apologies, I told you the reverse. You should go for Ace and not Kampa. And the reason for the same is that Ace has higher Energy Efficiency Ratios (1 ton has COP of 4.00 and 1.5 ton has COP of 3.8), Kampa has lower EERs (1 ton has COP of 3.8 and 1.5 ton has COP of 3.5), iClean has EERs of (1 ton has COP of 4.00 and 1.5 ton has COP of 3.73). So Ace and iClean have higher EERs than Kampa.

          As far as servicing is concerned, it is required for all models. A cleaner AC is usually more efficient in cooling as well as gives better air quality. So it is a good feature.

          Sharp is also offering some of the most energy efficient ACs. And on top of that they are quite economical as well (much economical as compared to Hitachi). We have also received some good feedback about sharp. So if you like it, you should certainly go for it.

          Hope this helps.

          Regards,
          Abhishek

          P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  14. Sachin Mohite says:

    Hi Abhishek,

    I live in Khar (W) Mumbai,I am looking for a split ac for my room of size 11*8 sq ft situated at ground floor
    , 3 floor building, no direct sunlight.
    Room is facing toward West

    I have 2 window(1st window 6*3.5 sq ft and 2nd window 2*3.5 sq ft), 1 door and room is connected to my Kitchen.

    My usage are primary in the night time in Summer season(April to June) and October for 5-6 hours.
    Considering my usage are not high 1 ton 3 star or 5star would be idea

    I have listed out Diakin 1 ton 3 star FTC35PRV16(R-32) and 5 star FT35MV16(R-22)

    should I go for inveter ac? Pls suggest
    Budget ard 35K

    • Abhishek says:

      Hi Sachin,

      Your room of 11×8 sq ft just needs 0.6 tons of cooling. If you plan to go for fixed speed AC, I would suggest that you do not go for anything bigger than 0.75 or 0.8 ton. Now if we look at your calculations:

      Your usage is about 8 hours for 3 months, so 720 hours, and another 180 hours in october. So in total 900 hours.

      A 0.75 ton AC would consume about 0.5-0.6 units in an hour. So yearly electricity consumption would be about 450-500 units. Your per unit rate will depend on who is your electricity supplier (Tata or Reliance) and also on your monthly usage. For calculations I assume that it is about Rs 6.5 per unit.

      So yearly Rs 2925 – 3250 for electricity. A BEE 5 star would save about 15% or Rs 450 per year and Inverter tech would save about 30-40%, so about Rs 900-1000 per year. A BEE 3 star 0.75 ton AC from a good brand would cost about Rs 25000 and Inverter Tech would cost about Rs 27000 (Sharp AH-XP10LV would cost about Rs 27888 and Daikin 0.75 ton Inverter Tech is about Rs 28611).

      So I think it is better to go for Inverter Tech, but would suggest not to go for 1 ton but for 0.75 ton AC (even if you go for fixed speed).

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  15. shalini says:

    Hello Abhishek,
    My room size is 12×15 .I was looking for a split air conditioner for the humid weather of bhubaneswar. Which one do you think would be the best?
    Thanks

    • Abhishek says:

      Hi Shalini,

      You need anywhere between 1.5 ton (if your room is on lower floor where ceiling is not exposed to sun, less sunny or less hot in general) to 1.9 ton (if the room is top floor with ceiling exposed to sun, sunny or gets quite hot). As for the brand and model, I can suggest something if you tell me your daily usage of AC and also for how many months you will use it.

      Hope this helps.

      Regards,
      Abhishek

      P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

  16. Bhavesh Modi says:

    I am planning to have split AC. Pl suggest a brand on power consumption, buying cost basis. My bed room is 130 sq ft without direct sun shine and having two floors on it.
    I have enquired in market but little bit confused between brands.
    I am residing at Vadodara, Gujarat.

    • Abhishek says:

      Hello Mr Modi,

      You need 1.1 ton of cooling for your room. If you go for fixed speed AC, I would suggest that you go for a 1.2 ton AC rather than 1.5 ton AC. Else you can also go for 1 ton inverter tech AC (as most of them have a range of coverage from 0.2 to 1.15 tons). If you go for 1 ton inverter tech, then Sharp and Samsung will be good and most economical.

      Hope this helps.

      Regards,
      Abhishek

  17. Roy says:

    Hi Abhishek,

    I live in kolkata and planing to buy an inverter (hot & cold) 1 ton split ac unit for my bedroom and my budget is around 50k. There are 2 models that I have sorted out. One is Daikin FTXS35EVMA Heat Pump Series and another is LG Inverter V series AS-W126B1U1. Both AC have around the same price of my budget. Features are more in that LG model than in Daikin one. Though I like Daikin more but can’t ignore LG’s rich features. So need your help. There is also a Hitachi hot & cold inverter model available in the market but the price is out of my budget. And I am going to buy it by this weekend. So hope you can help me out on these.

    • Abhishek says:

      Hello Mr Roy,

      The LG model has significantly higher EER (Energy Efficiency Ratio of 4.08 as compared to 3.43) than the Daikin model. So I would suggest that you go for it.

      Regards,
      Abhishek

      • Roy says:

        Thanks for your reply. But due of unavailability of that LG model I am still waiting and running out of time. So I am considering now in between Hitachi Ace Inverter RAU013EUEA or OGeneral Inverter ASGG12JLCA model along with my Daikin Heap pump series model. And when I queried about my hot & cold model in many stores, they suggest me its not that popular concept in Kolkata zone and hence the unavailability. Most of the people suggest me now only go for inverter cooling only model. So I need your suggestion on that. Is there much difference between hot & cold Inverter split ac and just inverter split ac? Also I would like to know about Refrigerant R410A and R32. What I learn that R32 is for future and most environment friendly than compare to R410A. And within a year most of the companies in our country will be using R32 only. I have found few R32 model in daikin sites (http://www.daikinindia.com/pdf/split-pdf/2014/FTKM.pdf). So should I go with that or stick with more reliable R410A model? Hope I will get your reply on that.

        • Abhishek says:

          Hello Mr Roy,

          Both R32 and R410A are HFCs and energy efficient and environment friendly. R32 is Daikin’s self manufactured refrigerant.

          As for hot and cold, you need it only if you have extreme cold climate (which I doubt you will have in Kolkata) and you need heating in winters. People in North India prefer to go for it (and it is actually good for them to go for it). In Kolkata I think just regular inverter model would be sufficient. Hot and Cold models are expensive too.

          Now if you are living close to river/sea I would suggest that you look for a model which has copper body as aluminium body rusts faster. So do check that before buying.

          Finally between Hitachi and General: I have seen far more energy efficient models in Hitachi so I do have certain bias for it. But you should find out which one provides better service in your area.

          Hope this helps.

          Regards,
          Abhishek

          P.S: Please help us by taking survey on this link: http://www.sustain-it-india.com/index.php?r=survey/index&sid=687551&lang=en

          • Roy says:

            Hello Abhishek,

            Thank you once again for your detailed reply. Yesterday went to a store and have booked for LG Inverter V 1 ton model BS-Q126B8A4. Though I was like 100% sure that I would go with Hitachi Ace Inverter RAU013EUEA since it has more higher COP (4.00) than the LG inverter V series model I choose (3.43) as well as power consumption 945 is in Hitachi to 980 in LG. But after sale service is very important to me and what I heard that LG after sale service is much more superior than the Hitachi. I am still not getting my LG ac because of the unavailability and probably would get it after 20th of April as per the sales person. So I have time to rethink my decision whether its correct or not. Both Hitachi and LG inverter model price are in the same range.

            Here I am sharing both models link in the following:

            http://www.hitachi-hli.com/images/products/specifications/spe_1390971835.pdf

            http://www.lg.com/in/split-ac/lg-BS-Q126B8A4

            I am just like need one more favor from you to find out which model will saving money and also going to give me superior comfort as well as after sale service. If you 100% suggest me to go with Hitachi then I might cancel my LG advance booking and then go with the Hitachi one. So looking for your help. Thank you, Roy

          • Abhishek says:

            Hello Mr Roy,

            LG model has more air filters to improve indoor air quality when the room is closed (mostly for a longer time). Whereas Hitachi model has lower power consumption and faster cooling (LG cooling watts = 3.43×980 = 3361 and Hitachi cooling watts = 4×945 = 3780).

            So pros for LG model:
            1) Better service
            2) Good air filters for improving indoor air quality.

            Cons for LG model:
            1) more power consumption
            2) Slower cooling

            Pros for Hitachi Model:
            1) Lesser Power Consumption
            2) Faster cooling

            Cons for Hitachi Model:
            1) Post Sales service not good
            2) No mention of air filters

            Hope this can help you make a decision.

            Regards,
            Abhishek

  18. Shankar says:

    Thankyou Mr Abishek and your advice was useful

  19. arvind jain says:

    hii sir mujhe 1.5 ac lagana he .mere room ki size 8/20 hi kounsa ac good rahega .aur unit kya rahegi

    • Abhishek says:

      Arvind Ji, Aap kaun se shahar mein rehte hain? Aur aap din mein kitne ghante AC chalate hain, aur saal mein kitne mahine AC chalate hain?

  20. Shankar says:

    Hi Abishek,
    I live in chennai and planing to buy a split ac unit for my bedroom of area 120 sq.ft. I am confused of selecting between 1ton and 1.5 ton and also between inverter tech and conventional type. There is no building above my bedroom, with direct sunshine and has a window of area 25 sq ft. Please suggest me a good model which is economical and saves electricity. My usage would be approx 7-8 hrs per day at night only and for 6 months in a year.

    • Abhishek says:

      Hello Mr Shankar,

      I would suggest you to go for 1 ton inverter tech AC (based on your room size and your usage). Almost all brands are offering 1 ton inverter tech AC these days. Below are some brands/prices that we got from the internet:

      LG BS-Q126B8R8 Max tonnage 1.15 ton, Price about Rs 39,999 (on compareindia)
      LG BS-Q126B8A4 Max tonnage 1.15 ton, Price about Rs 42,990 (on reliance digital)
      Sharp AH-XP13LV Max tonnage 1.2 ton, Price about Rs 31,700 (on compareindia)
      Carrier Kurve Inverter AC, Price about Rs 35,488 (on compareindia) — Carrier also has a superia inverter range for which price is not known to us.
      Daikin 1 ton Inverter FTKE35, Price about Rs 35000 (on snapdeal)
      Mitsubishi has MSYGE13VA (price of which is not known to us).
      Voltas Delux (DC Inverter) 12V DX 1.0 Ton, Price about Rs 39,990 (on Naaptol)

      Hope this helps.

      Regards,
      Abhishek

  21. Sonal Jain says:

    Hi Abhishek,

    Really glad to see that a forum like this exists and appreciate all your sincere responses.

    I reside in Kolkata and am planning to buy an ac(budget : around 32k) for my room measuring 10*10 ft and directly facing east and north. My usage of the ac would only be limited to a maximum of 5-6 hrs with the majority of it being used at night for around 3 months in a year. Now my first dilemma was to go for a window ac or a split ac. I have heard that a split ac demands a lot of expensive maintenance which I see as a big disadvantage. I reside on the fifth floor of a six floored apartment and the outdoor unit can only be installed on the terrace. But I have somehow been coaxed by family members to go for a split ac though I am not entirely convinced. What are your views on the same ?.

    Now I have come across some 3-4 models of split ac which I found good .

    1) Hitachi 1 Ton 3 Star Kaze Plus RAU312HUD (have heard a lot of negative things about Hitachi service though)

    2) Samsung 1 Ton Split Air Conditioner – 3 Star AR12HC3TFUR (the one with print on the panel)

    3) LG 1 Ton 3 Star (The new one with Himalaya cooling technology etc)

    4) Daikin 1Ton 3 Star

    Please, please help me select one out of these. What do you feel about the service quality of these brands in Kolkata.’

    And if you feel I should go for a window ac kindly suggest a model. It would of immense help if you can reply today itself as I might have to finalize the model by today.

    Regards,
    Sonal Jain

    • Abhishek says:

      Hi Sonal,

      The maintenance of split AC should not very expensive if you have outdoor unit installed at a place where it is easy to access. In case there is no balcony, installers put an iron bracket outside the window to install the outdoor unit. Then it becomes difficult to service. May be in such cases it gets expensive. But I am not very sure of that. Typically there is not much difference in energy efficiency of window and split within the same star rating. And window ACs are slightly cheaper than split ACs. The difference is mainly in the noise as split ACs are a bit quite as compared to window AC.

      As for the brands, Japanese brands (Hitachi, Daikin, etc) have better technology, but LG & Samsung have a much larger service network (as they have outsourced most of their post sales service). If service quality is your major concern, then I would suggest that you go for LG/Samsung. Between the two I would prefer LG but again it is my preference based on my past experience with the brand.

      A BEE 3 star AC works fine for your usage. In case you want to go for window AC then you can look at Carrier Estrella Plus 1 ton AC. Carrier is another good brand. Please note, most manufacturers are slowly moving towards more of split ACs than window ACs and thus you will find very few window AC models.

      Hope this helps.

      Regards,
      Abhishek

      • Sonal Jain says:

        Hi Abhishek,

        Thanks for the really quick reply.

        A few more doubts still linger in my mind though. Is Hitachi Service in Kolkata really as bad as it is made out to be by the ac dealer(he is suggesting that I buy Samsung) or the dealers generally might have other reasons as well for pushing consumer brands like Samsung. ?…. I have a few people who really love Hitachi service which confuses me even more..

        And is the difference in technology and quality between Hitachi and Samsung/LG substantial enough to sway one’s decision ? I am looking to strike a balance between quality and service before arriving at a decision. Hope you can resolve the conflict in my mind quickly.

        Regards

        • Abhishek says:

          Hi Sonal,

          The difference between the brands is like difference between Honda and Hyundai in cars or say Apple and Samsung in phones :). It is not substantial but depends on your preference. As for the feedback on service, I would prefer taking inputs from people who live in your area rather than taking it from a dealer. Dealers do try to push their inventory or products where they have better margins. Although I doubt that Hitachi’s service would be that bad in a city as big as Kolkata.

          Hope this helps.

          Regards,
          Abhishek

  22. Anuj says:

    Dear Sir,

    I am living in Gurgaon and am looking for a Window AC. The room size is 13X15 ft (195 sq. ft) and glass window (size: 9X5 ft) is on EAST side. The room is on top floor and as it is rented accommodation, I can look for window AC only.
    I am planning to buy Hitachi RAV518HUD (1.5 ton ac), however as per the various website, it suggest that I should go for 2 Ton AC. Kindly suggest which AC I should buy 1.5 Ton or 2 Ton. My preference is to go for a 5 star AC.

    Thanks,
    Anuj

    • Abhishek says:

      Hi Anuj,

      Even as per my calculation the tonnage requirement comes to 2 ton (in fact the range is 1.8 ton for non sunny/lower floor room to 2.25 ton for a sunny/top floor room). A 2 ton AC would consume anywhere around 1.5-1.8 units of electricity in an hour. So depending on your electricity rate and usage you can evaluate if you should go for BEE 5 star rated AC or not.

      Hope this helps.

      Regards,
      Abhishek

      • Abhishek says:

        If it was not a rented flat, I would have suggested you to go for some insulation techniques to bring down the tonnage requirement. But some of those will be permanent fixes, so would be difficult to do in a rented flat.

        Regards,
        Abhishek

      • Anuj says:

        Thanks for you suggestion. I am just wondering if there is any 2 Ton AC with 5 star rating. Pls suggest, what if I will go for a 5 Star 1.5 ton AC? Is there any drawback in this option.

        Regards,
        Anuj

        • Abhishek says:

          Hi Anuj,

          If you go for 1.5 ton AC then it will not cool the full room during peak summer days. It will just throw cold air locally (area about 7-8 ft from the AC). Not all corners of your room will feel cool on such days. However having said that, it is also possible that during low heat summer months like march, the tonnage may be sufficient for cooling the full room as well.

          If you are looking for a 2 ton BEE 5 star rated AC, then you can look at Hitachi RAU524ITD.

          Hope this helps.

          Regards,
          Abhishek

  23. Pritam Roychowdhury says:

    Hi, I nned one Ac.I am from Kolkata.I have made some research work and decided to buy Samsung digital inverter Ac.They are offering me 10 years warranty.Could anybody pls suggest me whether I should opt for it or not.
    Thanks
    Pritam…

    • Abhishek says:

      Hi Pritam,

      Inverter Tech is the most energy efficient (electricity saving) technology available in the market. And Samsung is a popular brand in India. So you should definitely go for it. They have a large service network as well, so it will be easy for them to provide service in any area.

      Regards,
      Abhishek

  24. nitya says:

    Hey also I would like to have 3-5 star rating and budget would be till 35k.

  25. nitya says:

    Hey,
    I’m from pune. I’m looking for a split ac for room size 100 sqft. My house is on the third floor With one two sided window and its not that sunny but still we can feel the heat from above. usage could b 6-10 hours. as far as I have researched 1 tonn would be sufficient with invertor technology. Can anyone help me with the reliable brands in India with a good after sales service. The reviews I read about godrej and voltas were shocking I lost all hopes to buy an ac.

    • Abhishek says:

      Hi Nitya,

      1 ton inverter tech is more than enough for your room. You can even go for a 0.8 ton inverter tech AC (one model available from sharp). There are several brands that have 1 ton inverter tech AC in 35K. You can get Sharp (0.8 ton, 1 ton and 1.1 ton models), Daikin (1 ton model) or Carrier (1 ton model) inverter tech in 35 K:

      Sharp AH-XP13LV Max tonnage 1 ton, Price about Rs 31,700 (on compareindia)
      Carrier Kurve Inverter AC, Price about Rs 35,488 (on compareindia) — Carrier also has a superia inverter range for which price is not known to us.
      Daikin 1 ton Inverter FTKE35, Price about Rs 35000 (on snapdeal)

      Hope this helps.

      Regards,
      Abhishek

  26. Immanuel says:

    Hi Abhishek,
    I stay in Jamshedpur in my own house. My room measures approx. 10 *12 sqft. Please suggest the right specicification to purchase a split AC. My budget is 25000/- to 32000/-. Also suggest the brands which are best in those segments.

    • Abhishek says:

      Hi Immanuel,

      For your room, the tonnage requirement would be about 1.1 ton (if room is non sunny & lower floor) to 1.4 ton (if your room is sunny & top floor and gets quite hot). Now there are several factors that one need to consider while buying AC:

      1) Tonnage of AC: Depends on several factors, but primarily on size of room, city where you live in, window sizes, people in the room. Oversized AC consumes more electricity, and undersized does not cool properly.
      2) Star Rating: Choice of BEE 5 star/inverter tech or a lower rating depends on your usage of AC. If your usage is more than 1000 hrs (with traiff more than Rs 5), it is better to go for higher efficiency models.
      3) Brand: Some brands offer better reliability/technology and some have better service network. One has to factor in both.

      Hope this helps.

      Regards,
      Abhishek

  27. Abhijit says:

    Hi Abhishek,

    I stay in Hyderabad, where its very hot and dry. I am planning to buy inverter A/c for my two bedrooms. The master bedroom is 208 sq ft with just one window and isn’t exposed to direct sunlight. The guest bedroom is 150 sq ft and has french windows. However, the guest bedroom window is east facing and gets on morning sunlight. Also can you suggest me the brand? I am planning to go for Hitachi ACE Inverter. Thanks for your help.

  28. Nalini Panday says:

    I need 2 split A C units for rooms 100 and 150 feet respectively . I live in chennai and on the 6 the floor of an apt complex. One for the smaller room will be used durin the business hours and the other at night in my bedroom. Which brand would be most Eco friendly and economically viable

    • Abhishek says:

      Hi Nalini,

      For the 100 sq ft room, if it is not too sunny and not on top floor (where ceiling gets hot), then it needs about 0.7 tons of cooling (during the day). For the 150 sq ft room, again if it is not too sunny then it need about 1.1 ton of air conditioning. In fact if you use it only during the night, then even a 1 ton AC would do. Now there are several factors that one need to consider while buying AC:

      1) Tonnage of AC: Depends on several factors, but primarily on size of room, city where you live in, window sizes, people in the room. Oversized AC consumes more electricity, and undersized does not cool properly.
      2) Star Rating: Choice of BEE 5 star/inverter tech or a lower rating depends on your usage of AC. If your usage is more than 1000 hrs (with traiff more than Rs 5), it is better to go for higher efficiency models.
      3) Brand: Some brands offer better reliability/technology and some have better service network. One has to factor in both.

      Inverter Tech is the most energy efficient AC technology (can save up to 30-40%), but its economic viability will depend on the usage you have of AC.

      Regards,
      Abhishek

  29. Subhashree Das says:

    Hi Abhishek,

    You have very good information in this post.
    We stay in Kolkata and our flat’s bedroom size is 14 ft x11 ft with one window (east facing), and located on the top floor (4th floor) of the building. We were planning to buy Godrej GSC 18 FG 7 WLG 1.5 ton model.
    Can you tell whether this would be a good decision to buy this AC? Me n my husband are worried about energy effiency as well as a brand with good after sales services.

    Thanks,
    Subhashree

    • Abhishek says:

      Hi Subhashree,

      Firstly your room would need about 1.35 tons of cooling in peak summers. So the obvious choice is to go for 1.5 ton models. Now there are several other factors as well that need to be considered while choosing an AC:

      1) Star Rating: Choice of BEE 5 star/inverter tech or a lower rating depends on your usage of AC. If your usage is more than 1000 hrs (with traiff more than Rs 5), it is better to go for higher efficiency models.
      2) Brand: Some brands offer better reliability/technology and some have better service network. One has to factor in both.

      Invertor Technology is the most efficient technology available in air conditioners these days and can save 30-40% on electricity bills. But the economics again will depend on your usage of AC. If you can tell us your usage of AC then we can analyze more.

      Regards,
      Abhishek

  30. Aniket Apte says:

    Hi Abhishek, Nice post.

    I a looking forward to buy Split AC for my room, which is 120sqft, Top floor (3rd) and have 1 window of 15sqft & 4 doors of 19sqft. Worst conditions for AC. I live in Pune. I did some research on web and found out 1.5 Ton/18000Btu is suited for my room. So I am looking for 1.5Ton 3 star with most EER rating in Cheapest price with R410A. I have found out that Except Blue-star all other manufacturers like LG, Panasonic, Daikin, Voltas uses R410A only in Iverter Models & not in regular split AC’s.
    Please tell me what would be the unit consumption of 1.5 Ton 3 Star AC with 3.24 w/w EER rating (3HW18HAF Blue-Star) Compared to 1.5 Ton Inverter AC with 3.30 w/w EER rating. My usages gonna be 6Hrs a day so, 6×30=180 Hrs/Month. Shall I go for 3HW18HAF (because it comes with R410A) or with Inverter ones (out of my budget)? Or with Panasonics New AC series Econavi which claims most Energy efficient?
    Thanks,
    Aniket.

    • Abhishek says:

      Hi Aniket,

      First of all I must say that 1.5 ton for a 120 sq ft room in Pune is huge and you will end up using a lot of electricity for it. Even a 1 ton AC would be good enough for you (if you keep the windows and doors closed while using the AC and also use curtains). If you go for a BEE 3 star 1.5 ton AC, it would consume about 1.2-1.3 units an hour, whereas a fixed speed 1 ton AC would consume about 0.8 units. Secondly Inverter tech is a variable tonnage AC and it reduces its speed as per the need of the room. Also the need of the room changes from month to month. And thus inverter tech saves 30-40% electricity. A one ton inverter tech AC can change its tonnage in the range of 0.2 tons to 1.15 tons. And a 1 ton inverter tech AC can easily come in the same price range as a BEE 3 star 1.5 ton AC (Daikin, Carrier and Sharp inverter tech are quite reasonable in price). In case you are only interested in a certain type of refrigerant, then I would say you should go for 1 ton inverter tech.

      Hope this helps.

      Regards,
      Abhishek

  31. Vishal says:

    I’m looking for an AC for my 200 sq. ft. room which is on top floor (3rd) in Dwarka, New Delhi. Can you help me with this ?

  32. Vatsal says:

    Hey Abhishek,I’m looking to buy a 2 Ton AC with an energy efficiency rating of 3-4 stars,for my living room which is about 250 square feet.Could you please suggest me some ACs that would fit my requirements.Budget up to Rs.45,000.And one which gives a good warranty too.

    • Abhishek says:

      Hello,

      These BEE 3 star rated models are good
      LG LSA6NP3F
      LG LSA6AP3M
      LG LSA6EW3M
      BlueStar 3HW24HAF

      Hope this helps.

      Regards,
      Abhishek

  33. Sharad says:

    Hi Abhishek,

    Thanks for this wonderful site and post. I wish to buy AC. However, I stay on top floor and my bed room should be around 120 sq. ft. Please suggest how much capacity of AC to be bought and other energy saving techniques. Please recommend some good 5* and inverter AC brands.

    Thanks in advance,
    Sharad

    • Abhishek says:

      Hello Mr Sharad,

      Which city do you live in and how much is your usage of Air Conditioner?

      Regards,
      Abhishek

      • Sharad says:

        I stay in kalyan (Thane) and my usage of AC shall be mostly in summer about 7-8 hours a day.

        Thank in advance
        Sharad

        • Abhishek says:

          Hello Mr Sharad,

          Your usage is about 1200 hrs a year and in Maharashtra the tariffs are high, so BEE 5 star or inverter tech would be recommended. In case your room gets too hot and sunny in summers then you need about 1.3 tons of air conditioning in peak summers (as you are on top floor). Now most 1 ton inverter tech have a range between 0.2 ton to 1.15 ton (one sharp model AH-XP13LV has range up to 1.25 tons). Going for 1.5 ton inverter tech is safe but it will cost about 8-10K more. A fixed speed 1.5 ton AC would cost about 4-5K less than 1.5 ton inverter AC, but that will increase electricity consumption. So your choice truly depends on your budget. A 1 ton inverter tech model would cost between 30-40K whereas 1.5 ton inverter tech AC would cost about 40-50K.

          Hope this helps.

          Regards,
          Abhishek

  34. Nag says:

    Hi Abhishek,
    Have visited a couple of stores and decided on going with either Hitachi or Samsung digital inverter tech 1 ton ac. But I am still not sure which of them should i opt for. More importantly, the price difference is also huge, so please suggest me as to which one to go with , Hitachi/Samsung?
    Thanks in advance,
    Nag

    • Abhishek says:

      Hi Nag,

      There are many more brands that offer 1 ton inverter tech AC. Below are some details we compiled just a few days back:

      G BS-Q126B8R8 Max tonnage 1.15 ton, Price about Rs 39,999 (on compareindia)
      LG BS-Q126B8A4 Max tonnage 1.15 ton, Price about Rs 42,990 (on reliance digital)
      Sharp AH-XP13LV Max tonnage 1.2 ton, Price about Rs 31,700 (on compareindia)
      Carrier Kurve Inverter AC, Price about Rs 35,488 (on compareindia) — Carrier also has a superia inverter range for which price is not known to us.
      Daikin 1 ton Inverter FTKE35, Price about Rs 35000 (on snapdeal)
      Mitsubishi has MSYGE13VA (price of which is not known to us).
      Voltas Delux (DC Inverter) 12V DX 1.0 Ton, Price about Rs 39,990 (on Naaptol)

      Although from a reliability perspective, I would always prefer a japanese brand.

      Hope this helps.

      Regards,
      Abhishek

  35. sri says:

    hello abishek,
    thanks for reply but u have mentioned two same models. please rectify that and send other model

  36. sri says:

    how is bluestar servicing in hyd. and which is more prominent in terms of servicing and life of ac in between bluestar and hitachi

  37. sri says:

    hii can u please name the best model of hitachi 1.5 ton 3 star..

    • Abhishek says:

      These 2 models from Hitachi 1.5 ton 3 star are the most efficient:

      Hitachi RAU318HUDP
      Hitachi RAU318HUD

      Hope this helps.

      Regards,
      Abhishek

  38. sri says:

    please mention the best japanese brand acs along with best model best suited for hyd city temp.

    • Abhishek says:

      Hello Mr Sri Kumar,

      Hitachi, Daikin, Sharp, Panasonic, General are some of the Japanese brands.

      Regards,
      Abhishek

  39. sri says:

    hello im planning to purchase 1.5ton (3/5 star) split air conditioners. but im confused with brands like LG, Bluestar,Hitachi, Ogeneral. please help me out which brand will be best suited for me in terms of good service, more reliability, budget around 35k. please help me on which models should i prefer

    • Abhishek says:

      Hi,

      First of all there are several factors to be considered before buying an Air Conditioner. An oversized air conditioner can increase your electricity bills, whereas undersized AC will not cool the room properly. Few aspects that are very important for sizing are: Room Dimensions (volume) and Location. Secondly a 3 or a 5 star preference will depend on your usage of AC as in how many hours in a year would you use them and what is the rate of electricity in your city. As far as brand is concerned, my preference will be more for Japanese brands, but that does not mean that other brands cannot offer good products, and all of us have different experiences with different brands.

      Hope this helps.

      Regards,
      Abhishek

  40. RITESH GUPTA says:

    HI, I have bought LG LSA3ZR3M1- I am confused with cooling(watts) of 3350 and power input (watts) of 1130. So in 1 hour and in 1 unit how many watts it will consume? 3350 or 1130?

    • abhishekjain203 says:

      Hello Mr Gupta,

      Cooling watts is the tonnage of AC. 3350 watts of cooling is equal to 0.95 tons of Air Conditioning. The input wattage is 1130, which means when the compressor and fan is on, it would consume at the rate of 1130 watts. Now watts is just the rate at which electricity is consumed. Actual electricity consumed will depend on the cycle time of your AC and many other factors as highlighted on our page:

      http://www.bijlibachao.com/Air-Conditioners/things-that-impact-electricity-consumption-in-air-conditioners.html

      With just the wattage one cannot tell the hourly consumption of the AC. Just based on observations, I can tell you that it would consume about 0.7-1 unit of electricity depending on outdoor temperature, room size, and various other factors.

      Hope this helps.

      Regards,
      Abhishek

  41. SynicInSF says:

    For hot walls, leafy vines are good but cost water and space. Any kind of screen, set even a half an inch off the wall will protect the real wall for turning sunlight into heat (which would then enter the living space). Suddenly summer is here in Concord, CA.

  42. shweta says:

    Hi Abhishek,

    I reside in Kolkata, my usage of AC is 7-8 hours in a day and my electricity bills comes around 4000-4800 rs!!

    For 10 hours, 2 computers are on! can you pl suggest what can be done to reduce electricity cost.

    Regards’

  43. mahesh vora says:

    Mumbai’s climate is very humid and at the same time there is lots of dust everyday.
    Which 1.5 ton window is best suited with best EER .
    Is there any window airconditioner with inverter ?

  44. tushar says:

    @abhishekjain203:disqus then it means Hitachi RAV518HTD best in 1.5T Window AC for Effective Cooling, highest EER = 11.27. Right now im using Samsung window AC 1.5T running continuously for 10 hours still not able to maintain Temp 25 room size is perfect for 1.5T, dispense cool air is not chill enough.

    • abhishekjain203 says:

      Hi Tushar,

      1.5T is a decently big size unless your room is huge. If it is a new AC, I would suggest contacting Samsung for it. If it is very old (12+ years) then it might be time for you to change it. Else something might have gone wrong. When the compressor is on, the chillness of air is the same at 25 degrees or 18 degrees. The only difference between the 2 thermostat settings is the time for which the compressor runs. At 18 the compressor will run longer, but at 25 it will have shorter cycles. But the chill factor of the air coming out remains the same.

      Regards,
      Abhishek

      • tushar says:

        Dear Abhishek,

        Samsung AC 5 years Old but chill factor coming out not like other LG AC installed in other room with same 1.5 window AC. Planning to buy new Window AC more interested in Hitachi RAV518HTD 1.5 expecting more chilled air as per its Specification. What you suggest which one will be the best for chilling AIR :)

        • abhishekjain203 says:

          Hi Tushar,

          5 years is too early for an AC to die down. But if you are interested in buying a new AC, then the model you selected has good cooling capacity with right efficiency.

          Regards,
          Abhishek

          • tushar says:

            Just purchased Hitachi RAV518HTD for Rs.32500 + Stabilizer Rs.2300 + Rs.500 installation (6 Years Replacement Warranty)

          • Anand Gupta says:

            Hi Tushar! Can you share the info – number of hours you use the AC and the power consumption by the AC?

  45. Irshad says:

    @abhishekjain203:disqus : My room size is 146 Sq ft and 12 ft height in ground floor. There’s window to west with glass covered with curtain. My room’s entrance door faces east with no trace of sun light. And i have a ventilation (3.2 sq feet to 3.4 sq feet) closed with mosquito net on west at room top. Its only me and my pc all year around. I would be using A/C between the temperature of 25 celsius to 28 celsius mostly as i am sensitive to chillness. I am in dilemma, whether to buy 1.0 ton or 1.5 ton invertor A/C ?. I zeroed on Daikin and LG Invertor A/C. Your help will be appreciated……

    • abhishekjain203 says:

      Hello Irshad,

      I am glad that you are considering inverter tech AC. It is the most efficient technology that is available in the market and can greatly help you if you have a good usage of AC. Sharp has come out with an excel based calculator for sizing inverter tech AC which is available on http://www.sharpproducts.in/downloadsupport.aspx?id=23&cid=13. Let me know if you are not able to download it, I will send it to you in email. Inverter tech AC is a variable sized AC, so a 1.2 Ton AC can go up to 1.5 Ton and can also go as low as 0.7 ton (please note that these are just a representative numbers to help you explain, the actual numbers vary for models but are close to these). So if a calculator for regular AC shows you about 1.5 ton requirement, then an inverter tech AC of about 1.2 ton would suffice your need. Try out the sharp calculator. I hope it helps you.

      Regards,
      Abhishek

  46. ⚡Ravi Dabbiroo ZYCE⚡ says:

    thx abhishek for ur reply.. i have one more q? when in doubt should one go for a lower tonnage of ac or a higher tonnage?

    i have zeroed in on a INVERTOR ac : AHXP13LV by Sharp (thx to your timely article). http://www.sharpproducts.in/overview.aspx?id=17&cid=13 . now my question is sharp claims according to my room requirement 1.1 ton invertor ac is good (they have a chart which shows 1.1 ton invertor ac is good enough for room size upto 160sft if in ground floor). my room is 150 odd sft and is in ground floor. (its a 10 floor apartment). window direction west.

    but other calculators say its 1.5 tonn..! so wats your take ?

    • abhishekjain203 says:

      Hi Ravi,

      When in doubt it is better to go for higher tonnage. In case of lower tonnage, the compressor will keep running all the time consuming lot more electricity.

      Now in your case, you are choosing an inverter technology Air Conditioner. The benefit of Inverter tech is that it has a variable capacity. So an AC market with 1 or 1.1 ton may take capacity of 0.75 ton to 1.5 ton (you may check the AC manual to get the exact details). The benefit of the same is: With varying seasons, the cooling requirement of a room varies (peak summers there is more heat, and in cooler months it is less, it may vary even between day and night). Thus ideally the tonnage requirement varies (because tonnage signifies cooling capacity).

      So if you are taking non inverter tech AC, then try to go for the higher tonnage (to manage the peak load). Ideally if it is a 150 sq ft room and you are going for a non inverter tech AC, then even I would suggest a 1.5 ton AC. But that’s the benefit of inverter tech that you need smaller sized AC and it can vary the capacity based on load.

      Hope this helps.

      Regards,
      Abhishek

      • ⚡Ravi Dabbiroo ZYCE⚡ says:

        thanks abhishek ..for the super prompt reply ! i have decided to go for the inverter ac for sure. so wat you saying is1.1 ton should suffice (coz it has variable capacity) ! the manual says that inverter tech 1.1 ton is good upto 160 sft room (and in case of non-inverter it shld be 1.5t)…!

        so 1.1t inverter ac should suffice my requirement and sharp ac fits the bill!

        ps: i have got all 5 star rated as per latest guidelines ceiling fans installed as per bijlibachao ..! great going team..!

        wd look forward to your views on the 1.1T dilema that i am in !

        best,
        ravi

        • abhishekjain203 says:

          Hi Ravi,

          If you plan to use AC all throughout the year, then you should think about Inverter AC (because loads will vary with seasons). If you will use it only in the summer months, then a regular air conditioner will also do. You can go for a better technology brand (like OGeneral, National, Blue Star, Hitachi or Carrier) with a good star rating and can go for a 1.5 ton AC. Please note that determining the tonnage depends on a lot of factors and exact calculation is extremely difficult. Most calculators just go by the thumb rule calculation which give closest possible best guess. Hope this helps.

          Regards,
          Abhishek

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