Electricity Saving Tips For Homes And Offices

Refrigerators with Inverter technology can help save electricity

By on October 15, 2014
This article is also available in these languages: hi Hindi

Are you planning to buy a refrigerator and looking for energy saving options? If upfront cost for buying is not a concern for you then do look at refrigerators with inverter technology. Rest assured that the extra money you pay upfront will be recovered in the form of electricity savings. Inverter technology that was developed in Japan is the most efficient refrigeration technology available in the market today that can save up to 30-50% electricity consumed (units consumed) compared to regular refrigerators available.

Refrigerator Inverter

How does a refrigerator work?

Whenever it is hot and we want to feel cooler, if we take a bath, we suddenly start feeling better. The moisture (or water) on our body evaporates by taking heat from our body and makes us feel cooler. Similarly in a refrigerator there is a refrigerant called HFC (Hydro Floro Carbon) that moves in the pipes or coils on the rear part of the refrigerator. When it is in a liquid form, it takes the heat from the refrigerator contents and evaporates to form gas there by cooling the things kept in the refrigerator. The gas is then compressed using a compressor to convert it into liquid again, and the cycle continues. The compressor uses electricity to do its job and is the most electricity consuming part of a refrigerator.

Refrigerator also has a device called “Thermocouple” which senses the temperature inside the refrigerator and makes the compressor go “on” or “off”. The thermocouple works as per the temperature set in the refrigerator (yes you can set temperature in a refrigerator as well and we will explain it more in our other articles on refrigerators).

How does a compressor in regular refrigerator work?

Most compressors in regular refrigerators are single speed refrigerators. They are either “on” or “off” based on the temperature in the refrigerator and the setting in the thermocouple. Most compressors are designed to handle peak load conditions (for high temperatures in summers), which means that they run at peak load even in winters when the cooling requirement is less. Every time the refrigerator door is opened, heat enters the refrigerator and the compressor has to take care of this load as well. So most regular compressors are built to take care of peak load plus the “door open shut” load which during most of the year is much more than the actual requirement.

How does a compressor with inverter technology work?

A compressor with inverter technology works very much like a car accelerator. When the speed required is more, the acceleration is more, and when it is less, and then the acceleration is less. This makes sure that during summer months when cooling load is more, the compressor works at peak capacity taking more electricity. But during winter months when cooling load is less, the compressor works less there by consuming less electricity. Even in summer month, the night temperature is less than the day temperature and thus electricity savings happen in night when compressor can run at a lesser speed.

This kind of compressor never switches off even when the temperature stabilizes, but runs at a slower speed maintaining the temperature inside the refrigerator. The benefits are:

  • In an “on” “off” cycle of a regular refrigerator, inside temperature varies throughout. But in case of inverter technology, temperature is more stable.
  • The amount of noise made by the refrigerator is much less in refrigerators with inverter technology as compared to the regular ones.
  • Energy or electricity consumption is much less when the temperature stabilizes.

InverterTechnology

Although prices of inverter technology refrigerators are on a higher side, but they can save a good amount of electricity, there by helping you recover the money in your electricity bills.Infographic18

Lesser known benefits of Inverter Technology

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

Source of Information:

http://www.panasonic.com/industrial/includes/pdf/invertercompressors-improvingefficiency.pdf

http://www.energyquest.ca.gov/how_it_works/refrigerator.html


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There Are 127 Comments

  1. Avishek says:

    I want to buy a Samsung Inverter Technology Refrigerator, 275L with 5 Star power savings. The model number is RT29JDRZFSA. I want to know whether this fridge is worth buying or not. Please suggest me the pros and cons for this particular model.

    • Abhishek Jain says:

      Samsung Inverter Technology Refrigerator, 275L with 5 Star power savings has inverter technology so it will be able to keep the vegetables fresh for a long time. It has a power consumption of 195 units/year. We could not find any details about it on Samsung website so we cannot comment more on it.

      • Avishek says:

        Thanks, please suggest the best fridge of 275 L of your choice..

        • Abhishek Jain says:

          You can look at these Samsung refrigerator models:

          SAMSUNG RT29JDRZFSA/TL
          SAMSUNG RT29HDRZESA/TL
          SAMSUNG RT29HARZERY/TL
          SAMSUNG RT29JARYESA/TL
          SAMSUNG RT29JARZESP/TL
          SAMSUNG RT29JAMSESZ/TL
          SAMSUNG RT29JAMSERZ/TL
          SAMSUNG RT29JAMSEPZ/TL
          SAMSUNG RT29JARZEPX/TL

  2. Jayesh Dutia says:

    Dear Abhishek,
    Thanks very much for your response. Considering that I live in Baroda Gujarat, service for Hitachi will be a question mark. So I think I will go with Panasonic or Samsung. Also, wanted to check if LG is a good choice when compared to Samsung Double door with inverter technology for 500+ Litre fridge. Please advise.

    • Abhishek Jain says:

      Both LG and Samsung are good. I cannot say that one is better over other. Both have good number of energy efficient models in the market. The choice will depend on how good their service is in your area. And for the feedback on the same, your best source would be local dealers and users of the brand.

  3. Jayesh Dutia says:

    Dear Abhishek,

    I am planning to buy a Double Door Fridge with capacity of 500+ Litres. I want to go for Invertor Technology for reducing the power costs. Please suggest which is the best value for money from among Samsung, Panasonic, LG, IFB, & Hitachi

    • Abhishek Jain says:

      You can go for Hitachi or Samsung. You can look at these:

      HITACHI R-V610PND3K 565
      HITACHI R-VG610PND3 565
      HITACHI R-V610PND3KX 565
      SAMSUNG RT54H667ESL 528
      SAMSUNG RT56H667ESL 555

  4. Uday says:

    Hi Abhishek,

    I thought inverter range is beyond star ratings. How come inverter fridges have star ratings as well? I don’t see the same thing applied to Inverter ACs. I haven’t been able to find anything on this topic online. Can you please explain? Also, none of the e-tailers seem to have any 5 star inverter range fridges.

    Can you also suggest a couple of inverter fridges in the 300-400 liter range? I don’t mind if it’s little costly upfront as I know the small difference in cost will save big in running expenses.

    Regards,
    Uday

    • Abhishek Jain says:

      Hi Uday,

      In case of air conditioners the star rating is provided on the value of Energy Efficiency Ratio (output watts/input watts), for inverter ACs this value is not constant and thus comparing ACs (inverter and non inverter) on EER values is not possible and thus inverter ACs are not provided star rating. However in case of refrigerators, the star rating is provided on annual electricity consumption. And it is easy to measure annual electricity consumption for both inverter and non inverter refrigerator. And thus inverter tech refrigerators have BEE star ratings.

      Now there are very few (about 6-7) refrigerators that are BEE 5 star rated. In 2014 BEE revised their star ratings and made them more stringent. So the old BEE 5 star rated refrigerators moved to BEE 3 star. You can look at these refrigerators:

      BEE 5 star rated refrigerators:

      LG GL-D322RPJZ 310 lts
      LG GL-D322RSJZ 310 lts
      Samsung RT36JDRZFSL/TL 345 lts

      BEE 4 star rated refrigerators:
      LG GL-D402RSHM 360 lts
      LG GL-D402RPHM 360 lts
      LG GL-D402RLJM 360 lts
      SAMSUNG RT39HDAGESL 393 lts
      SAMSUNG RT39HDJTESP 393 lts
      LG GL-D402RPJM 360 lts
      LG GL-P402RPJM 360 lts
      LG GL-P402RSJM 360 lts

  5. sudipto says:

    i am planning to buy whirlpool 240 ltr. FP 263D PROTON ROY FIN (N) Refrigerator with vegetable drawer option available in this model. Is it advisable to buy this product? How good the refrigerator performance is in regard to power consumption and cooling technology? please suggest. Budget is between 25k and my requirement is 240 to 260ltr fridge.

    • Abhishek Jain says:

      Hi Sudipto,

      This Whirlpool model is a 3 door model and BEE has not rated 3 door models yet, so I cannot comment on it’s power consumption. Whirlpool as a brand typically has good BEE 3 and 4 star models, so I would assume that this specific model would not have bad compressor to consume a lot of electricity. But technical data for the same is not available. Most whirlpool models have sixth sense technology which is good for maintaining ideal temperature for keeping food fresh. However in my opinion Inverter Technology compressor is better in saving electricity along with maintaining the right temperature. Are you looking for 3 door models only?

  6. ranjana says:

    hai abhishek

    can u tell me the difference btw this models?

    1.LG GL M292 RLTL (PV)
    2.LG GL M292 RLTL (PZ)

    which is best to buy?

  7. Raghu says:

    HI Abhishek,

    I want to buy a double door refrigirator of 250 ltr. Could you please suggest a most efficient and economic good one model.

    Thanks in advance,

    Raghu.

  8. sandeep shah. says:

    dear abhishekji we are planning to buy a referegarator of about 500lit to 600lit ..What about SHARP SJ PK 64 G SL .It is of 585 lit .regular -compressor .they say it is of 4 bee star rating.please suggest us about it or of any other modles. thank u .

    • Abhishek Jain says:

      Sharp does not have any model with BEE 4 star rating as per revised standards in 2014. These are models with 4 star rating as per 2013 ratings. You can go for any of the Hitachi, Samsung or LG model with inverter technology compressor.

  9. Richard SMith says:

    Will the new Digital Inverter Compressors work with a Modified Sine Wave Inverter used in most older recreational vehicles or is an upgraded Pure Sine Wave Inverter required?

  10. raghu prathap says:

    HI Abhishek, You are doing Great help around here. It is helpful verymuch. I want buy a refrigirator of 195L >capacity<240L of single door. My budget is 15k INR. Please suggest a good refrigirator with inverter tchnology and power saving one also. I am seing there is no inverter tch for single door refrigirators. Is my assumption correct?

    • Abhishek Jain says:

      Hi Raghu,

      You got it right. There is no inverter technology in single door refrigerators. You can look at these single door refrigerators that are the most efficient in the category and budget you are looking for:

      LG GL-225BAD5
      LG GL-225BDD5
      LG GL-225BM5
      LG GL-225BMG5
      SAMSUNG RA20GCPR1/CTL
      SAMSUNG RA20GCRR1/CTL

      These refrigerators are equally efficient as the smallest double door inverter tech refrigerator in the market.

  11. Singh Bhajan says:

    Are there any disadvantages of inverter technology refg.

  12. Adnan says:

    Dear Abhishek, please tell me which refrigerator should I purchase. I am looking around 400 ltrs capacity. I have currently shortlisted Sharp SJ-PK49G/SJ-PK49M (431 Ltrs) & LG GL-M472GSHM 420 ltrs. Which is better? Also is it advisable to buy from snapdeal?

  13. awdhesh says:

    Dear Abhishek, please tell me which side by side refrigerator with linear inverter compressor is better in the market today,, the various options do confuse,,
    i am looking above 600litre capacity

    • Abhishek Jain says:

      Hi Awdesh,

      Liner Inverter is LG’s technology. All others have regular inverter compressor. If you are looking for regular inverter compressor refrigerator in side by side models, I would suggest that you may check Hitachi and Panasonic refrigerators.

      • awdhesh says:

        Thanks Abhishek,,,also let me know which would the best linear or regular, in terms of performance and economy,,thanks once again

        • Abhishek Jain says:

          Technically Linear inverter AC would be better in saving electricity than regular. However there are multiple factors that impact energy efficiency, compressor being one of them and the most important.

          • Baha says:

            unfortunately, LG is able to work and adjust in two different temperatures with leaner motor, meanwhile other brands are having piston inverter motors as i mentioned wz 6 speed, like Siemens, Samsung e.t.c. When the temperature changes the Ref. adjust its motor working process. So, LG is able to work in Summer and Winter perfectly, and the same time Siemens or Samsung are able to work in all seasons and plus additionally 2 more temperatures, well, you have to make right choice.

        • Baha says:

          Avdhesh, LG has 2 speed Inverter motor, which is lenear, Samsung has 6 speed Inverter motor.

  14. Parag says:

    Hi Abhishek,

    Which is best digital inverter technology and BEE 5 start rating refrigerator available in 200-260L range? Can you please list some models here?

    • Abhishek Jain says:

      Hi Parag,

      You can look at these refrigerators. Some of the models where price is mentioned as NA are latest models as per BEE list. I am not sure if these brands have these models in market or not.

      Brand Name Model Number Gross Volume(Litres) Electricity consumption (unit per year) Star Rating Market Price
      LG GL-B292RMTL 258 238 4 NA
      LG GL-B282RACL 255 240 4 NA
      LG GL-B282RLCL 255 240 4 NA
      LG GL-B282SLCL 255 240 4 NA
      LG GL-C282RPCL 255 240 4 NA
      LG GL-D292RSJZ 258 190 5 NA
      LG GL-D292RPJL 258 238 4 31990
      LG GL-E292RPTL 258 238 4 33790
      LG GL-M292RATL 258 238 4 28500
      LG GL-M292RLTL 258 238 4 27490
      LG GL-P292RPJL 258 238 4 33790
      SAMSUNG RT27HARZERY/TL 253 244 4 NA
      SAMSUNG RT27HDRZESA/TL 253 244 4 27000
      • Parag says:

        Hi Abhishek,

        Thanks for the list. Two models of LG – GL-P292RPJL and GL-D292RPJL – both lists feature which maintains optimum cooling inside the refrigerator for up to 10 hrs*, even during power cuts. The GL-P292RPJL model names this feature as Power Cut Evercool while GL-D292RPJL model names this feature as Durachill. Are both function same? Is there any difference in them? Because GL-P292RPJL is costly than GL-D292RPJL. So why is the difference in price? I am just assuming that it could be because GL-P292RPJL has convertible box which other doesn’t.

        Additionally, considering the electricity consumption (unit per year), LG’s GL-D292RSJZ seems to best among all of the above. It has got 5-start BEE rating this category and the only model which has 5-star rating. The approval date is also Aug-2014, so the latest (checked on BEE website). However, it is not listed on LG’s website and when I called-up LG customer care they said they don’t have any information on this model. Should I wait for this model to come in the market as it seems to best among all on power consumption (just 190 units)? How much Rs. can be saved towards electricity bill if I go for this 5-star model than any other 4-star model with 238 units electricity consumption? Do you have any info on this model?

        Thanks,
        Parag

        • Abhishek Jain says:

          Hi Parag,

          Power Cut Ever cool is for the whole refrigerator whereas durachill is only for the freezer and that is why the cost difference. The difference of 48 units at Rs 5 per unit will cost Rs 240 in a year. If you are in Mumbai where the price of electricity is about Rs 10 then it will be Rs 480 in a year. But please note that depending on your usage the actual consumption of the refrigerator may be about 30% higher than the rated units (as the numbers by BEE are in test conditions). So 48 unit difference may end up as difference of 48*1.3=62 units.

          • Parag says:

            Thanks again Abhishek.

            So should I wait for this (BEE 5-star) model? Do you have any update on this model – when can it be available?

          • Abhishek Jain says:

            It is quite some time since this model exists in BEE list (so manufacturer registered it), but is not available in market. I think for now you can go for any of the BEE 4 star rated models.

  15. Siddharth says:

    Hi Everyone!
    Well, this is Siddharth from Kolkata.
    I was using my whirlpool refrigerator (GNF220x) for more than 15-16 years and it did not have any problem. My monthly bill used to be unusually high. Suddenly after years I though to find out why, and then found out that the old refrigerator is the culprit and it takes almost (7amps at startup) and steady current of around 1.2 Amps at 230 Volts, making it a gadget of something like 276 watts, and I found out that it worked for around 23 hours per day, making me pay for 2317 kWh (ie; 2317 Units per year, Yes you read it right! It was of a conventional compressor and with that age I thought it was of no use to get it serviced as I really wanted a CHANGE, this change means change in the power consumption). Like, many of you even I had gone through a dilemma to choose the correct refrigerator as per my need, I made up my mind to go for only inverter based digital compressor refrigerator, somehow I liked the Samsung refrigerator more. Samsung RT29HARZERY, I just went for it.

    BEE 3star rated Samsung RT29HARZERY inverter, it claims to consume 305 units per year as per standard BEE conditions.
    I knew, or rather had belief that it might consume even 30% more electricity under normal usage, and made up my mind that, its still fine even if consumes 400 units per year as my earlier frost-free one was consuming more than 2300 units per year.

    I tested the current consumption of my new refrigerator, found it to be around 0.5 amps at around 230 volts.
    I was sure that it would decrease within some time or rather few days.

    After 5-6 days of usage, I tested several times and found almost the result consistent.
    Today also I checked and found it to be 0.156 Amps at 228.6 Volts.
    Indicating it a load of just 35.6616 watts!!
    that means when used for 24×7, 365 days, it would consume just 312.39 units.

    I know this result can vary with seasons, but it is going to be more or less consistent.

    I’m stunned to see this result.

    BEE Claims 305 units per year for this Samsung RT29HARZERY
    My test indicated that it would consume 312.39~ 312 units!!
    Percentange of accuracy is 97.75%!!! (almost 98% accurate result)

    P.S.: I’m really thankful to Abhishek jain for all the suggestions.
    All the forums are very informative.
    Keep it up Bijlibachao!

    Regards,
    Siddharth
    Kolkata

  16. Vikram kr singh says:

    I want buy new fridge for my mother which are living in village three to four hour elect City daily come so can I use fridge on inverter how much volt inverter to use also 400 volt solar panel use 850 volt inverter to charging use . Please tell me how much volt inverter to fridge per litre thanks

    • Abhishek Jain says:

      Hello Vikram,

      Typically refrigerators motors are rated at 300-400 watts or 550 VA in steady state. However regular motors need much higher startup current and thus it is typically recommended to get a 2 kVA inverter for a regular refrigerator. But with inverter technology refrigerator the startup current required is less than the steady state current, so if it is rated at 400 watts, it would just need about 450 VA inverter to work. So if you have a 850 VA inverter then I would suggest that you go for a refrigerator with inverter technology. The smallest size inverter technology refrigerator available in market would be a 253 lts double door refrigerator and the brands that would have such models are Samsung and LG. A BEE 3 star rated Samsung model would cost about Rs 20000 at least. And BEE 4 star would go up to Rs 26000. It will not only work on lower capacity inverter, it will also consume less electricity which means your battery will run longer per charge. Additionally if you go for a LG model with Power Cut Evercool technology, it will keep the food in refrigerator cool for 9 hours during power cuts (without using electricity). But it will be a bit more costlier (say about 27000-28000). So the options are either to go for larger inverter (a 2 kVA at least) or go for inverter tech AC that would use lesser resources. There are costs associated with either option.

  17. Althea says:

    WHAT ARE THE DISADVANTAGES OF INVERTER TECHNOLOGY? DO WE BREATHE IN THE FHC GAS?

  18. Durga Shankar Kumar says:

    I have one Leonard refrigerator which has slow speed compressor and it is working fine. Is there any fridge today having slow speed compressor?

  19. Gopal says:

    Dear Abhisek, Thank you for your reply. Sorry to bother you again. Is Samsung RT50HS809SL better than a Panasonic fridge NR-BY552XS
    in terms of energy consumption.

    • Abhishek Jain says:

      Hi Gopal,

      Panasonic NR-BY552XS is not rated on BEE star rating as it is a bottom freezer model. I cannot comment on that. Samsung RT50HS809SL is a safe buy.

  20. Gopal says:

    Dear Abhisek, I plan to buy Samsung RT50HS809SL. Please suggest if this is a good buy in near 500lt range. Thank you. Gopal

  21. shamshad parveen says:

    hi abhishek, im thinking of purchasing a DIC refrigerator of 300-400lts volume with bottom freezer.pls suggest me a good brand.im stuck between samsung&panasonic.

    • Abhishek Jain says:

      I would suggest that you go for Panasonic DIC if you are thinking of going for bottom freezer. Panasonic model NR-BW415XS with econavi and inverter tech would be the best. Else you can also look at Panasonic model NR-BW415VN.

  22. Meena says:

    Which one is best between Hitachi and Heir ?

  23. vijay says:

    planning to buy 240 litres invertor technology fridge.. heard whirlpool is best… but they dont have invertor technology .. so sir pls suggest the next good brand with invertor technology and good service ..

    • Abhishek Jain says:

      You can look at any of these:

      Brand Name Model Number Gross Volume(Litres) Electricity consumption (unit per year) Star Rating Market Price
      WHIRLPOOL NEO IC275 Royal 262 253 4 26322
      SAMSUNG RT29HDRZESA/TL 275 248 4 30200
      SAMSUNG RT27HDRZESA/TL 253 244 4 26800
      LG GL-D292RPJL 258 238 4 27400
      LG GL-E292RPTL 258 238 4 29990
      LG GL-M292RATL 258 238 4 28500
      LG GL-M292RLTL 258 238 4 23500
      LG GL-P292RPJL 258 238 4 27000
  24. Jim says:

    I have heard that while the Inverter compressor technology is better, its energy savings is offset by the fact that it performs an auto defrost on an 8hour per day basis. In terms of total energy efficiency, how are they then compared to Electrolux ETE3500SE and Whirlpool Neo iChill WIE120USS, both have conventional compressors but claims to have the Adaptive Defrost technology which only turns on defrost on a per need basis.

    Which would be the best freezer option, one that has the freezer in the Top section or the models that have the drawer options in the bottom part of the refrigerator?

    Thanks,

    Jim

    • Abhishek Jain says:

      Hi Jim,

      I have not heard of auto defrost issues in inverter compressor, but in general I have observed that Whirlpool models with 6th sense technology have almost similar energy consumption as many of the inverter technology compressor models (based on some of the data that we have). Although I am not sure how whirlpool achieves that through 6th sense “sensors” but I guess your observation may be right on it. However I have no idea on the Electrolux model. However having said that, inverter technology models have slightly better numbers as compared to 6th sense models.

      As for the top and bottom freezer you can read more about it here: http://energystar.supportportal.com/link/portal/23002/23018/Article/23690/What-s-more-energy-efficient-a-refrigerator-with-a-top-mounted-freezers-bottom-mounted-freezer-or-a-side-by-side

  25. Nitin says:

    Hello Pankaj,
    Which would be the most energy efficient side by side refrigerator with storage capacity of 550~600 ltrs, that runs on inverter technology and available in the Indian market presently. If you also gave me the price, it would be of great help. Thanks.

    • Abhishek Jain says:

      Hi Nitin,

      We do not have data on power consumption of side by side refrigerator as it is not made available in public domain by most manufacturers. However you can look at Hitachi, Panasonic, LG and Samsung brands.

  26. Dipak says:

    I am planning to buy Refrigerator for home.

    Which one is better?

    LG GL-E302RPTL or Whirlpool Neo IC 305 ?

    • Abhishek Jain says:

      LG GL-E302RPTL is BEE 4 star rated refrigerator with inverter technology compressor. Whirlpool NEO IC 305 Royal is BEE 4 star but Deluxe is BEE 3 star but both do not have inverter technology. Inverter Technology is better in general.

  27. SyedAleem says:

    Hi,

    I wanted to know what’s the difference between Smart Invertor technology (the 1 we have in LG) and the Digital Inverter technology (the 1 we have in Samsung) ?? Which is better interns of performance and durability. I likes LG product due to its build quality compared to Samsung. Please suggest on this ???

    • Abhishek Jain says:

      Smart Inverter and Digital Inverter are the same. The only type that is different is Linear Inverter which is there in LG. Inverter Technology is a SMART technology because it auto adjusts the compressor speed based on the load. It uses digital components to do the same. However Linear Inverter is a technology where motion of the compressor is linear which minimizes the energy loss in motion of the compressor. Along with that it auto adjusts its speed based on the load.

    • Renz Alfred Villegas says:

      SMART INVERTER is the brand term for Samsung Inverter ACs. DIGITAL INVERTER is the term used for Samsung Inverter Refrigerators. As for LG, LINEAR INVERTER is the term used for their technology. In fact, Linear Inverter should not be used since LINEAR COMPRESSOR and INVERTER COMPRESSOR are different. Linear compressor can also save a lot of energy compared to AC COMPRESSORS but INVERTER COMPRESSOR saves more than LINEAR to prove, only LG uses LINEAR technology. As for build quality, I might not agree to that, I work for an appliance store and the number customer complain is LG compressors are noisy and not that energy efficient (not to give samsung all the credit but that’s a fact)

      • ASHOK KUCHHAL, D-16, Ist Floor, Ashoka Road, Adarsh Nagar, Delhi. says:

        Res.Abhishek ji,

        I want to purchase a fridge/refrigerator in the range of 340 to 400 lit. for my home builtup in 1100Sq.foot at Ist floor in DELHI.
        The electricity is available almost 23 to 24hours in a day. Which make will be the best irrespective of the brand interms of the:-

        1. Electricity saving
        2. Low Noise as it will be keep in kitchen attached lobby.
        3. Long life.
        4. good cooling & maintain maximum freshness.
        5. Single door or Double door (Single door available in 310Lit. in whirlpool)
        6. Low maintenance Expenses

        Keeping in view of the above noted points, Pl. suggest me the best one alongwith the Co’s Name and Model Nos., if possible with
        features.

        Thanks,

        ASHOK KUCHHAL
        09999328422, 09868162109

        • Abhishek Jain says:

          Hello Mr Kuchhal,

          In 340-400 lts range it is better to go for double door frost free models. Single doors are good up to 250 lts range. Also in this range it is better to go for refrigerator with inverter technology (most BEE 4 and 5 star refrigerators in this range are inverter technology). LG and Samsung will give 10 years warranty on the compressor as well. Inverter tech will also generate much lesser noise and will give maximum freshness. You can look at these models that may fit your needs:

          Brand Name Model Number Gross Volume(Litres) Electricity consumption (unit per year) Star Rating Approx Market Price
          LG GL-D402RLJM 360 256.85 4 37350
          LG GL-D402RPHM 360 256.92 4 39000
          LG GL-D402RPJM 360 257 4 44990
          LG GL-D402RSHM 360 257 4 38500
          LG GL-P402RPJM 360 264 4 41200
          LG GL-P402RSJM 360 264 4 41000
          SAMSUNG RT36HDJFELX/TL 345 265 4 37586
          SAMSUNG RT36HDRYESA/TL 345 265 4 35800
          SAMSUNG RT36HDRZESL/TL 345 265 4 37500
          SAMSUNG RT36HDRZESP/TL 345 265 4 37000
          SAMSUNG RT39HDAGESL 393 276 4 44500
          SAMSUNG RT39HDJTESP 393 276 4 42300
          WHIRLPOOL NEO IC355 Royal 340 271 4 34888
          WHIRLPOOL NEO IC375 Royal 360 275 4 38633
  28. Pankaj says:

    Hi Abhishek

    I want to buy a fridge around 550-600 litre which has good build quality and also easy to maintain via good after sales services. I was thinking b/w Hitachi . Sharp & Samsung. I heard Hitachi after sales is pathetic and not getting complete info on Sharp’s After sales service. SO its making me reort to Samsung side by side model rs21hstpn1. Can you comment on whether it is a good choice or not and if not would like to know your recommendations.

    Thanks

    • Abhishek Jain says:

      Hello Pankaj,

      If you are looking for star rated double door refrigerators then you can look at these:

      LG GR-B772GSPH
      Samsung RT56H6679SL

      both of these are BEE 3 star rated models. Hitachi also has some models in BEE list that are 4 star rated, but these models are not available in market. If you are looking for side-by-side models, then all I would say is look for models with inverter technology compressor. Sharp is a good brand with good value for money, but their service is patchy at places. However it would be good if you are in a big city (heard good feedback in Mumbai). The model you mentioned does not have inverter tech compressor. There are couple of benefits of inverter tech: 1) It save about 30-40% on electricity consumption 2) It gives consistent cooling so food remains fresh.

      • Pankaj says:

        Thanks Abhishek, I am in Delhi so am assuming Sharp service will be reasonable. Also one thing, usually the side shelves of refrigerators get cracked easily. Will buying Sharp product at least lower the possibility of cracking as I presume they have better quality than samsung/LG etc. Also are these parts available just in case it breaks.

  29. Kristhy says:

    Thanks a lot !! Your explanation is very helpful .
    Kindly suggest me any good model of 250 to 300 litres Frost Free with cooling gel technology
    does cooling gel technology really keeps it cool for at least 2 to 3 hours
    The fridge dealer in my place is of the opinion that direct cool keeps stuff cool for at least 3 to 4 hours because of the ice formed inside compared to frost free. I want your expert opinion
    Thanks a lot once again

    • Abhishek Jain says:

      You can look at:

      LG GL-E302RPTL
      LG GL-P302RPJL
      LG GL-D292RPJL
      LG GL-E292RPTL
      LG GL-P292RPJL
      Whirlpool Neo IC 305
      Whirlpool Neo IC 275 (has deep freezer with chilling gel)

      These can keep food cool for 9-10 hours in power cuts. And this is different from what the direct cool refrigerator does. Although if ice is formed, even direct cool can keep food cool for some time.

  30. Kristhy says:

    How long the frost free refrigerator will keep cool in case of power failure ?

    • Abhishek Jain says:

      As I said it all depends on technology. Some Frost Free refrigerators also have cooling gel technology that can keep the refrigerator cool for 9 hours during power cuts.

  31. Kristhy says:

    Hi Abhishek
    I am planning to buy a refrigerator, can you suggest me few options ? my criteria are below
    1. Volume less than 300 litres
    2. There is a not much electricity problem in my area, so looking for a product which is good in 1/2 to 1 hours long power cut.
    3. Cost around 15 thousand
    4. Exclusively to keep fish, meat& vegetables
    5. You Can suggest any good brand .. I am not particular to this.
    6. How long the frost free refrigerator will keep cool in the power cut
    7.Which one is good direct cool or frost free from cooling point in area where 1 to 1&half hours power cut
    8.Difference between direct cool & frost free refrigerator

    • Abhishek Jain says:

      Hi Kristhy,

      It will be difficult to get a 300 lts fridge at around 15 thousand. You can get refrigerators of around 200 lts in that budget. Brands like LG and Samsung have technologies to store cooling in gel which can be used during power cuts. LG claims that it’s power cut evercool technology can keep the refrigerator cool for 9 hours during power cuts.

      Also it will be difficult to get frost free refrigerator in your budget. Direct Cool refrigerators are single door refrigerators that need manual defrosting. Which means ice accumulates around the freezer and you need to switch it off periodically to remove the ice. Frost free refrigerators do this automatically and you need not switch off the refrigerator.

  32. AKASH PARMAR says:

    Hello Abhishek,

    I want to buy low coast refrigerator around 15k of 190 Ltr. But I am confused in brand. My choices are LG and Samsung.
    I tried searching over internet but could not come to decision that which one is better brand..?
    Please guide me which refrigerator should I purchase..? LG or Samsung..?

    • Abhishek Jain says:

      Although they are almost equally energy efficient. Samsung provides slightly more volume with slightly less energy consumption. So you can go for Samsung.

  33. Vandana says:

    Hi Abhishek we plan to buy a 550/ 600 l refrigerator with a higher fridge is to freezer ratio. Also there is a lot of confusion in the market regarding an inverter tech. compressor. As per my understanding, truly invertor compressor refrigerators or ac s should not have a star rating. How come most of the brands are advertising inverter compressor refrigerators, but also have a star rating alongside? To me, it appears like an advertising gimmick rather than anything else. The only refrigerators with invertor tech compressors are Hitachi or Panasonic, I think. Could u pl clarify this for me and also suggest a good model for my needs?

    • Abhishek Jain says:

      Hi Vandana,

      There is no star rating for Inverter Tech ACs, but there is star rating for double door inverter tech refrigerators. Side-by-side, Multi door and bottom freezer refrigerators are not rated on BEE star rating yet. Hitachi and Panasonic have inverter technology refrigerators in bigger size (in the size range that you are looking for), however most of them are side-by-side and multi door that are not rated on BEE star rating. In fact Hitachi also has 6 double door models registered as BEE 4 star rated refrigerators, but they are not available in market. The only double door refrigerators (of the size you need), that are registered on BEE star rating are these 3 that are BEE 3 star rated:

      LG GR-B772GSPH
      SAMSUNG RT56H6679SL
      SAMSUNG RT54H6679SL

  34. sameer says:

    Hi Abhishek,, I am planning to but a 450-500 ltrs double door refrigerator. I was thinking iof buying Bosch. Any feedback on bosch?. I live in mumbai so is service an issue? And what are the best invertor tech refrigerator in this segment?

    Also 2nd question is, we need smaller freezer so is there a 80:20 ratio in some models . Mostly i found 70:30.

    Pls guide.

    • Abhishek Jain says:

      Hello Mr Sameer,

      If you need less of freezer space then you should look at convertible freezer models from Samsung having digital inverter compressor (e.g. RT45H5809SL). In this you can use the freezer space as refrigerator when needed. This models is BEE 3 star rated. Bosch models are BEE 2 star rated and do not have inverter tech compressor.

  35. Abby says:

    Hi Abhishek,
    This is very helpful and explained it in a way that non-technical people will understand. Thank you very much. Can you help decide between LG’s Linear Inverter and Samsung’s Digital Inverter. Which is better in terms of energy efficiency pls? Thanks!

    • Abhishek Jain says:

      LG in general has more energy efficient models as compared to Samsung. You can check the list at https://www.bijlibachao.com/top-ten-appliances/what-are-best-refrigerator-fridge-lg-samsung-whirlpool-india.html

  36. Ajayk says:

    Hi Abhishek,

    Can you please suggest which is the best one out of the below mentioned.

    1: LG GL-M522GSHM(SV) Frost Free

    2: Samsung RT49H5679SL

    Consider all the factors energy saving, after sales service and long term working product.

    • Abhishek Jain says:

      Hello Mr Ajay,

      LG GL-M522GSHM is a BEE 4 star rated refrigerator with rated electricity consumption of 290 units a year. Samsung RT49H5679SL is a BEE 3 star rated refrigerator with rated electricity consumption of 360 units a year. Both are inverter technology refrigerators, so good products. The price difference between the two is quite less. The LG model will save more electricity for you because the rated difference is 70 units, which will turn out to be a difference of about 100 units on use (because usage units are 30-40% higher than rates units in refrigerators). So depending on your rate of electricity you can work out the energy savings for 100 units a year.

      Now from after sales service perspective both LG and Samsung have similar standings. Depending on location one brand may be better that the other, but on the whole, both are equally good. So I think LG will be a better option for you.

  37. chhaya says:

    Hi Abhishek

    We are planning to buy 300 – 400 litre capacity refrigerator. I have heard that LG and Samsung will b best. Would like to know from you that which brand should we go for so that for next many years we don’t have to think of changing it.

    Rods
    Chhaya

    • Abhishek Jain says:

      Hi Chhaya,

      Both LG and Samsung have inverter tech refrigerators in this range, which is the technology to look for. Most of Samsung models are BEE 3 star as per 2014 ratings. LG has 5 and 4 star rated refrigerators as well.

  38. Vishnugopal VG says:

    What is the difference between lg inverter linear compressor and the newly launched smart inverter?

    • Abhishek Jain says:

      Linear inverter is LG’s technology where the movement of compressor is linear instead of reciprocating. LG claims that it is more energy efficient that regular inverter compressor. And all inverter compressors are called Smart Inverter because they adjust according to the need of the system.

  39. Bhargav says:

    Abhishek,

    Just wondering about haier three door refrigerator with inverter technology. Apart from Hitachi only haier is providing economical three door fridge. What are the views for haier ?

    Thank you
    Bhargav

    • Abhishek Jain says:

      Hi Bhargav,

      Just looking at BEE data I can see Hitachi having lot more BEE 4 star rating models whereas Haier is mostly 2 and 1 star and some 3 star rated models. I cannot give you data more objective than this to give a comparison.

  40. asis patnaik says:

    Compresser is on always in inverter technology there by will not get any rest. Breakdown of compresser will be there or not ?

    • Abhishek Jain says:

      companies give warranties on compressors. LG and Samsung give 10 years warranty on inverter compressors.

  41. Vikasa says:

    Hi…plz suggest a Best energy saving fridge 340 to 360 litres? And how come the same model Samsung fridge RT36FDJFASL is 5 star rated in 2013 & 3 star rated in 2014? My cousin has brought the above mentioned 2013 model this year, so is that means his fridge is 3 star efficient only. Kindly clarify please.

    • Abhishek Jain says:

      Try LG GL-D402RSHM or GL-D402RPHM or GL-D402RLJM. The BEE star rating standards have been revised in 2014, so some of the refrigerators have come down in ratings. So yes the refrigerator you mentioned is BEE 3 star.

      Hope this helps.

      Regards,
      Abhishek

  42. jagat says:

    Hi Abhishek,

    I have a doubt regarding inverter technology.. if an inverter ac cools the room to desired temprature while working at its minimum capacity and if temp drops further then will its compressor turn off for some time as a normal ac?? actually i see many time the fan of my 2ton Mitsubishi ac outdoor unit turns off and then on even the daikin 1,5ton ac in other room does the same. If this happens does it have any bad effect on the life of compressor???

    • Abhishek Jain says:

      Hi Jagat,

      Inverter ACs are designed in such a way that the compressor never turns off. Firstly let me tell you that even if the thermostat senses that the optimum temperature has reached, the flow of heat into the room does not stop. If your room is cooler than the outside temperature, the heat will flow into the room continuously. It does not stop even for a moment. What the inverter AC does is that it optimizes the speed of the compressor in such a way that the rate of heat it takes out from the room is same as the rate of heat coming into the room. So initially it does run at a higher speed (to reduce the temperature), but it stabilizes at a consistent speed once the rate at which it is taking out heat is equal to rate at which heat is coming in.

      Thus it is also said that inverter ac is much more consistent in maintaining temperature, as the temperature will never go down from what you have set on thermostat. Whereas in a fixed speed AC the temperature may go down about a degree centigrade more when it stops.

      Hope this helps.

      Regards,
      Abhishek

  43. Murali says:

    Which is best Inverter Technology Fridge available in 200-300L Range ?

    • Abhishek Jain says:

      Hi Murali,

      Below are the most efficient AC models in 200-300 L range as per BEE data. Most of them are inverter tech models:

      S.No Brand Name Model Number Gross Volume(Litres) Storage Volume(Litres) Electricity consumption (unit per year)
      1 LG GL-D302RPJL 285 259 242
      2 LG GL-D292RPJL 258 237 238
      3 LG GL-E302RPTL 285 259 242
      4 LG GL-M302RATL 285 259 242
      5 LG GL-M302RLTL 285 259 242
      6 LG GL-E292RPTL 258 237 238
      7 LG GL-M292RATL 258 237 238
      8 LG GL-M292RLTL 258 237 238
      9 SAMSUNG RT29HDRZESA/TL 275 255 248
      10 LG GL-P302RPJL 285 259 242
      11 LG GL-P292RPJL 258 237 238

      Hope this helps.

      Regards,
      Abhishek

  44. Gurpreet Singh says:

    Hello Abhishek,

    Thanks for your valuable and precise inputs about the inverter technology of refrigerators.

    Which company provides the best Split ACs with inverter technology in 1.5 ton ?

    Thanks in advance.

    Gurpreet Singh Sidhu

    • Abhishek Jain says:

      Hello Mr Singh,

      Personally from a technology point of view we have a preference for Japanese brands, but truly every brand has its own pros and cons. But all brands offer inverter technology AC in 1.5 ton.

      Regards,
      Abhishek

      • Gurpreet Singh says:

        Hello Abhishek,

        Prior to buy split Inverter AC, I want to know what would be the Tonnage of the Air Conditioner for following:-

        *Area (sq. ft) ? 130
        *Height of the room. ? 10 ft
        *Usage of the room ? Bedroom
        *Maximum No. of Persons in the room at any given point of time. ? 3
        *There is no wall which that is directly exposed to sunlight
        *Even roof is not exposed to sunlight

        Regards,
        Gurpreet Singh

        • Abhishek Jain says:

          Hello Mr Singh,

          The best thing about inverter tech is that it can auto adjust to your need. So even if you go for a 1.5 ton inverter tech AC and your room needs only 1 ton, then it will auto adjust its tonnage. However to tell you the right tonnage I need to know the city where you are based.

          Regards,
          Abhishek

          • Gurpreet Singh says:

            I live in NOIDA

          • Abhishek Jain says:

            Hello Mr Singh,

            A 1 ton inverter tech AC would be enough for your room. 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

  45. vijay says:

    why it is the difference between Inverter compressor and linear inverter compressor

    • Abhishek Jain says:

      Hi Vijay,

      Inverter Technology adjusts speed of compressor motor depending on the heat load in the refrigerator. A regular compressor motor has a rotational movement. LG has a proprietary technology which it calls linear compressor where the movements are linear instead of rotational. LG claims that it saves electricity. Now they have combined the inverter technology with their linear compressor technology and call it linear inverter compressor. So logically thinking linear inverter compressor should have benefits over regular compressor, but the effect needs to be studied and we at Bijli Bachao have not done any research on that yet.

      Hope this helps.

      Regards,
      Abhishek

  46. bhavesh soni says:

    Hello Abhishek,

    I love the direction you work in!! congrats.

    can you guide me apart from SAMSUNG what are other economical models available with inverter tech.

    I have heard about this

    Panasonic NR-B295STW4.

    I am looking aroung 260-300 litre..
    Again thanks!!

    • Abhishek Jain says:

      Hi Bhavesh,

      There are several brands that make inverter tech refrigerators. In fact these days almost all brands have a few models that are inverter tech. But not all brands have models in all sizes. Most brands including panasonic have inverter tech in model of sizes 400 lts and above. I checked the model you mentioned online and it does not have inverter technology. Samsung is the only brand that has inverter tech in smaller size refrigerators. Haier has few that are less than 400 lts but still they are bigger than your requirement. You may also look at BEE 5 star rated refrigerators of the size you need (although inverter tech may save 20% or more electricity as compared to regular ones). Please note a 5 star refrigerator of 260-300 lts would consume about 1.5-1.75 units a day.

      Hope this helps.

      Regards,
      Abhishek

      • bhavesh soni says:

        Thanks Abhishek!!

        Precisely samsung digital inverter does the job neatly. Also as mentioned in reference PDF http://www.panasonic.com/industrial/includes/pdf/invertercompressors-improvingefficiency.pdf

        These refrigerators do work efficiently.
        :)

        • Abhishek Jain says:

          Inverter tech uses variable speed motors that help it adjust its speed according to the system requirement. Regular compressors have fixed speed motors and are mostly sized for higher capacity which is not always the case as seasons change and heat in the environment varies. Inverter tech is elastic and thus more efficient.

  47. Prasad Mayya says:

    very useful info as usual…. but i found your website very late….

    • Abhishek Jain says:

      Thanks. I am glad that you found it useful. Do sign up for our monthly newsletter to get regular updates.

      Regards,
      Abhishek

  48. sasikumar says:

    it very good, thanks this is same method to air conditioner compressor

    • Abhishek Jain says:

      That is right, the method is same for air conditioners as well. And because of their capability to vary capacity, they save energy. I am glad that you found the information useful.

      Regards,
      Abhishek

  49. Shwetha says:

    nice info…so, if is better I opt for an inverter based refrigerator, if I want to power it using solar energy…since the compressor does not turn ON or OFF but only varies the speed of operation, the surge is usually very low or non existent..am I right?

    • Abhishek Jain says:

      Hi Shwetha,

      You can use PV system with any kind of refrigerator (inverter tech or regular). Just that the sizing of the system must match the maximum power requirement of the refrigerator. You will need a PV module, charge controller, batteries and DC/AC inverter to connect to the refrigerator.

      Regards,
      Abhishek

  50. mayur says:

    This is very helpful information.

    Thank you

    • Abhishek Jain says:

      Thanks Mayur. You can sign up for our monthly newsletter through which we provide latest updates on the website.

      Regards,
      Abhishek

      • Kasinath says:

        Dear Mr. Abhishek Jain,

        I am planning to buy the Hitachi R-WB480PND2. Please let me have your comments on this. Please let me know any alternative fridge which you think is better than this. What could be the annual electricity consumption for this fridge.

        Regards,
        Kasinath

        • Abhishek Jain says:

          Hello Mr Kasinath,

          If you are looking for multi door model then Hitachi R-WB480PND2 is a good model. It has inverter technology compressor which will be energy efficient (electricity saving) as well as will keep the food fresh for long. You may get some models in LG/Samsung with similar technology and multi door. But this is a good one as well. It should have electricity consumption of about 300-330 units a year.

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