Electricity Saving Tips For Homes And Offices

BEE 5 Star rated ceiling fans: myths and realities

By on January 13, 2017
Hindi Translation: बीईई ५ स्टार रेटेड छत पंखे: मिथक एवं वास्तविकता

When we were setting up our house and were looking for electrical appliances to buy, our contractor, who was working on the electrical work, told us not to buy BEE 5 star ceiling fans. The reason he gave us was that there was complaints that BEE 5 star rated ceiling fans do not give good air delivery. We looked around for some data and agreed to what he was saying and installed a regular ceiling fan. Three years later (last week) we decided to give them a try and got the ceiling fans replaced. To our pleasant surprise we found the whole experience much better than what we expected. We write this article based on our experience auditing homes and also on our measurement of the old ceiling fans we replaced and the new one we bought.

Observations during home energy audits

While most people target only lights when they think about electricity savings, but fans contribute a lot more to the electricity bills and could be close to 30-40% of the electricity bills. Compared to lights that are switched on only in the evening (from 6 PM till midnight), ceiling fans are on for most part of the day and even during night. Also ceiling fans consume more electricity than a tubelight.

Myths and realities of 5 star rated ceiling fans

Most people believe that BEE 5 star rated fans deliver less air and using the same may not give similar comfort as a regular fan. Even when we look at the data (link: http://bit.ly/QLiRvi), we find that BEE 5 Star rated fans have minimum air delivery of about 210-220 CMM whereas regular fans have the value of 250 CMM. But when we replaced the fans in our home, we did not find much difference in the air delivery of old and the new fan. The new BEE 5 star rated fans are as good as the old ceiling fans and in fact we are quite happy to have newer fans in our house (in-tangible benefit). And the best part is that the earlier fans were rated at 75 Watts, but the new fans are rated at 50 Watts (30% savings). In fact some BEE 5 star rated fans are also rated at about 45 Watts.

How does it convert to numbers?

A typical ceiling fan runs for about 10-12 hours in a day (including a few hours at night). So if we look at usage and units, below are the numbers:

Regular Fan

5 star rated Fan

Wattage

75 W

50 W

Units Consumed Per Day (assuming 12 hours usage)

0.9

0.6

Units consumed in a month

27

18

Units consumed in a year

328

219

Cost of using fan in a year (at approx. Rs 5 a unit)

1642

1095

Above number show a clear saving of about Rs 600 per year (you can find per unit cost of electricity for you form our online calculator: Online Electricity Bill Calculator – For all states in India).

If we look at MRP of various fans available in the market, the MRP of regular ceiling fans is about Rs 1400 (non decorative) and those of 5 star rated fans is about Rs 1900. Which clearly shows that the money can be recovered in about a year of usage. And as the ceiling fans run for long, there will be savings afterward.

How we got our ceiling fans replaced

Unlike popular perception many private utilities (electricity distribution companies) are running programs that can help consumers reduce their electricity bills. They are also doing so as part of regulations from government. Being a customer of Tata Power in Mumbai, we got our old ceiling fans replaced for new ones at the cost of Rs 950 per piece (in exchange of old fans). Reliance Energy in Mumbai runs a similar program for ceiling fans. Even with that cost, if we look at above numbers, the return on investment will happen in about one and half years and we will save there after. So replacing old ceiling fans with new BEE 5 star rated fans also helps in reducing electricity bills.

The above numbers are just for 1 ceiling fan. In case you have multiple, you can save more on your electricity bills if you replace your old ceiling fans. Do let us know your feedback in case you have used energy efficient ceiling fans.

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  • Yayati Ghule

    sir, u didnt mention which fans u used for ur tests. Also one more thing ……..on one of the sites the power for Usha Technix 1200mm fan is given as 52W whereas its 45W on usha’s website. Also rpm given is 385 whereas its 340 on usha ! so whats the real truth?

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

      Hi,

      I have tested Havells ES50, Superfan and Atomberg’s Gorilla Fan.

    • SKP

      Good, what were the results? Did superfan / atomberg fans have the same airflow as traditional fans?

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

      Yes. They have the same airflow as traditional fans and consume lot less electricity.

  • Abhinandan Choudhary
  • Jayesh

    I am using Super Fan recommended by you and It performance has been very good but you have not mentioned about Super fan ?

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

      This specific article was written before SuperFan came into existence. Our top ten list ceiling fans and other pages do cover a lot about superfan.

  • Amar Kumar Singh

    In Mumbai Tata/Reliance are providing various schemes for their customers to shift to 5 star rating electrical appliances. Whether Maharashtra state distribution Co ( Mahavitaran ) or any other state/central government organization providing any kind of scheme to their customers?

    • Abhishek Jain

      Hello Mr Amar,

      BEE has bachat lamp yojna for replacing lights, but I have not heard of such DSM programs by MahaDiscom.

  • Radhakrishna

    I have purchased ceiling fan by crompton Greeves. Are they BEE5 star rated… whether they mention about that in their card or so.. please let me know. Where you will rate Crompton fans.. compared to other competitors in the market, curious to know to rate my judgement.

    • Abhishek Jain

      Hello Mr Radhakrishna,

      Crompton Greeves or CG does have BEE 5 star rated fans. Which model have you purchased? The star rated fans have a BEE star label on the box (should be there on the card as well). CG is one of the leading brands for ceiling fans.

  • PN Murty

    can you please evalaute superfan which claims it consumes only 35 watt of electricity

  • Krishna Ravi

    Dear Sree Abhishek Jain,

    A very good report and we need proactive people like you to accelerate the process of change towards more energy efficient living.

    I wish to present some observations with regard to BEE Star rated fans. They consume 54 watts against the rating of 50 watts when measured in operation. But then they operate at lower RPM and also delivers less air. Even ordinary fans when operated at lower speeds consume less. In my view instead of buying a BEE 5 Star rated fan we can achieve the same result by using our regular fans at lesser speeds. Further regular fans loose speed during low voltages and BEE 5 Star fans operate much slower delivering very less air. With these experiences gathered from multiple customers most electrical dealers and electricians advice against buying Star rated Energy efficient fans.

    But there are better solutions available now, with fans made with BLDC (Brush Less DC) technology. They consume very less power of 35 watts at full speed, which is 40% less than even the BEE 5 Star rated fans. These fans consume only 24 watt at the operating specifications of a BEE 5 Star fans. Further they offer additional benefits like operation at same speed even at lower voltages and do not get heated up like ordinary fans. That is a saving of 55- 68%. They can save considerably in power bills and offer the same pay back period as you have presented in your report. Further these fans can also be operated with a remote control, which is great convenience to the elderly and also to change speeds or switch off in the night. We don’t have to sacrifice anything like speed or air delivery with these fans. They are also low on maintenance because they do not have capacitors to change and has a very long life.

    regards,
    Krishna
    [email protected]

    • Abhishek Jain

      Hello Mr Krishna,

      Thanks for writing to Bijli Bachao and more than that thanks for sharing your opinion about BEE 5 star rated fans. This article came out of our personal experience with BEE 5 star rated fans. When we went to buy ceiling fans, the dealers advised us against buying them and we got regular fans. Later we replaced them with Havells ES 5 star (as part of Tata Power’s exchange program in Mumbai) and to our pleasant surprise the air delivery was not at all bad as it was suggested to us. We also measured the power consumption and it was close to 50 Watts for us. So as a consumer, we were quite happy with it. I guess the experience will vary from model to model choosing the right one is more important. By the way Super Efficient Fans sound really great. We have written about them in our article: https://www.bijlibachao.com/Fans/super-efficient-fans-in-india-a-result-of-seep-super-efficient-equipment-programme.html . They certainly sound better as compared to BEE 5 star rated fans and we will certainly try to promote them more to achieve better efficiency.

      Regards,
      Abhishek

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