Ceiling fans are some of those appliances that can withstand the test of time over the years. It can exist for decades and will not become outdated with time. There is a requirement for ceiling fans in almost every room in tropical countries like India. Sometimes the ceiling fans work great along with air conditioners for enhancing the cooling effect in the surroundings. But it also comes with disadvantages as they are one of the longest-running appliances that consume a high amount of power. The ceiling fan consumes much more power than the lighting arrangements. We have also noticed that almost 30 to 40% of the electrical consumption is primarily due to the ceiling fans alone. For this reason, ceiling fans have become a mandatory part of the BEE Star rating policy.
BEE has compelled all the fan manufacturing companies to get all their products accredited and tested based on star rating so the user might know how energy efficient is the appliance they are purchasing. The BEE star rating is done on a scale of 5 to prove their energy efficiency. Higher will be this rating lesser will be the electricity consumption. A 5-star BEE rating ceiling fan will consume lower energy than the one-star model.
Definition of 5 Star Rated Ceiling Fans
In today’s world, there is a huge electricity conservation requirement, and this has resulted in the discussion of BEE 5 star rated ceiling fans. The Bureau of Energy Efficiency measures the ceiling fan power consumption rate on the one to 5 scales. There is a belief that five stars rated fans deliver lower air than regular ceiling fans. Figures also indicate that a five star rated cooling unit includes an air delivery range of 210 to 220 cm. But in the case of regular ones, the air delivery range is 250 cm.
A regular ceiling fan consumes nearly 75 watts, whereas a 5 star rated one is 50 watts. It will cause straight savings of almost 30% on the electricity bill. Some 5-star ceiling fan models even consume 45 watts. If a ceiling fan runs for at least 12 hours a day, then the wattage consumption will be like:
|Property||Conventional Fan||5 star rated BEE fan|
|Wattage in watts||75||50|
|Unit consumed every day||0.9||0.6|
|Units consumed in each month||27||18|
|Annual unit consumption||328||219|
|Electric cost At 5 INR per unit cost||1640 INR||1095 INR|
The above table indicates that there can be a straight profit of 500 to 550 INR yearly if you switch over to a 5-star rating fan from the ceiling fan. Thus you can recover the buying cost of the five stars rated appliance within a year. Generally, none replaces a ceiling fan over 5 to 6 years. Thus a considerable reduction in the power consumption for such a long term will be beneficial for you.
Method of rating the ceiling fans by BEE
In today’s world, where global warming is increasing at a rapid pace, it is significant to conserve energy BEE has thus introduced this rating system for indicating the energy efficiency degree of any appliance. It has become mandatory that all electronic and electrical appliances should come with a star rating for the customer’s buying convenience. BEE rates the ceiling fans according to their service value, which is a ratio of the power consumption and air delivery. Any product that has a ratio above 4 is eligible for a 5-star rating. Below is an example of how BEE implements the rating.
Regular fan air delivery/ power consumption = 250/75= 3.33
5 star rated air delivery/ power consumption= 220/50 = 4.4
The New IS 374:2019 BEE star rating for Ceiling Fans.
The BEE has recently reorganized the star rating, which is known as IS 374:2019 standard. This new rating policy has come into effect from August 2019. In this new rating, BEE will also consider the blade size or span of the fan. The blade size distinction is primarily for the internal assessment and provides more precision in the ratings. Earlier the ceiling fans that had a service value of 4.1 are now considered as five stars. The one-star rating now begins with the service value of 4.1 for the blade size of 1400 mm.
The New BEE star rating of the Ceiling Fans
IS 374:2019 includes all the ceiling fans with an induction motor of the Squirrel cage model and a highly efficient BLDC (Brushless Direct Current) motor. Now let us take a closer look into the changes under the new rating system in the table below.
|Fan Blade size in mm||Minimum air delivery in meter cube per minute||Minimum service value in meter cube/minute/watt|
Here fan blade size means the total length of the fan wing. Air delivery is the total quantity of air swept by the fan tested in the NABL accredited Lab. According to BEE, air delivery values are dependent on the air velocity measurement for up to 15 m in every minute. The higher the air delivery, the higher will be the circulation of air. By service value, BEE means the amount of air delivery in each wattage of power consumed. It also indicates the total air the fan would deliver while consuming 1 watt. Higher will be the service value, more efficient will be the fan with no compromise in the air delivery.
New BEE star ratings for the Ceiling Fans
The new star rating policy of BEE is divided into two segments. They are:
Star Rating for Blade sweep of 900 and 1050 mm and sweep size lesser than 1200
|Star Rating||Service Value|
|1||Higher than 3.1 and lesser than 3.6|
|2||Higher than 3.6 and lesser than 4.1|
|3||Higher than 4.1 and lesser than 4.6|
|4||Higher than 4.6 and lesser than 5.1|
|5||Higher than 5.1|
Star Rating for Blade sweep of 1200, 1400, and 1500 mm and sweep size lesser than 1200
|Star rating||Service value|
|1||Higher than 4 and lesser than 4.5 for 1200 mm Higher than 4.1 and lesser than 4.5 for 1400 mm Higher than 4.3 and lesser than 4.5 for 1500 mm|
|2||Higher than 4.5 and lesser than 5|
|3||Higher than 5 and lesser than 5.5|
|4||Higher than 5.5 and lesser than 6|
|5||Higher than 6|
Advantages of BEE 5 Star Rated Ceiling Fan
Below are some of the most notable advantages of 5-star BEE rated ceiling fans.
The five stars rated air distributing units come with an improved power factor. By power factor, we mean the ratio of the actual energy that enters as an alternating current to the real-time electricity in the circuit. It also includes high standard copper windings that makes the fan stator much more enhanced than the traditional regular fans.
Reduction in the Air Gap
The air gap connecting the rotor and the stator is lower, resulting in a high-quality induction effect. It will create a minimum and lowest heat loss. These two aspects are mainly responsible for the low power consumption rate approximately varying from 50 to 75 watts. In this process, the customer will end saving power and money with this.
Disadvantages of BEE 5 Star Rated Ceiling Fan
To make all the products get approved by BEE as five stars rated, manufacturing companies of ceiling fans have started compromising on the RPM and air delivery for the power consumption reduction. It also results in lower optimum speed fans and is an enormous disadvantage in tropical countries like India. This is due to the fact as the ceiling fans always run at a higher speed for almost ten months a year. The speed reduction decreases air delivery. It will not offer enough comfort level to the customer.
Now that we have come to the end of this write-up, we might conclude that BEE 5 star rated ceiling fans are much more convenient in the long run. It might initially cost you a little more while purchasing than a regular fan, but power reduction and money saved from the electricity bill will make up this price difference.
After completing this graduation in Electrical and Electronics Engineering from Manipal University in 2013, Ankit began rummaging the current Indian market of technology and science. At apolloedoc, Ankit’s job profile consists of cumulating, researching, testing, and verifying products related to tech.
He has a knack for details and catches even the tiniest advantages and flaws that can make or break the product. Since last year, he has been writing for apolloedoc and has been our knight in shining armour when reviewing home appliances.
Ankit’s favourite pastimes consist of jamming onto his guitar with a couple of friends and constantly updating and learning new things! He is also a big-time pet lover and has a cute little pug named Oreo back in Chandigarh. He has bagged many achievements in his college by participating in multiple extracurricular activities.
Writing is something that comes to Ankit naturally. He has his own blog where he posts about coding languages and even provides coaching to students from 12th grade to 2nd year of college. At apolloedoc, Ankit beautifully showcases his knack for the written word by lucidly explaining information in an unbiased way.