Ceiling Fan Power, Efficiency & CFM (& How to Buy Efficient Ceiling Fans)

This article is based upon the research done on 195 best ceiling fans in the market and a person who wants to know about ceiling fan power efficiency and CFM. This article will help you to guide through all the details regarding the power of fan efficiency and CFM. It will also guide how to buy efficient ceiling fans. 

Ceiling fan wattage

  • The research done on 195 ceiling fans shows that the average wattage of a ceiling fan is 31.1 watts. 
  • When the fan is used at low speed its average consumption is 3.6 watts.
  • In standby mode, A ceiling fan consumes on average about 1.1 watts
  • The most common wattage a ceiling fan consumes is 33 watts. 
Ceiling fan
Ceiling fan

What is the wattage consumption by a ceiling fan according to the various sizes? 

The fallen table explains the breakdown of ceiling fan wattage which is recorded according to their various sizes and also shows the average CFM/w.

Ceiling fan sizeAverage on high-speedAverage on low-speedAverage on standbyAverage efficiency (CFM/W) 
Small (36″ or less)47W4.6W0.8W54
Medium (42″ to 48″)17.9W3.5W1.0W251
Large (50″ to 54″)23.4W3.6W0.9W268
Largest (56″ to 84″)34.6W3.6W1.1W301

What is the wattage consumed by various levels of the wattage of a ceiling fan?

Low Wattage Ceiling Fan:

A ceiling fan of low wattage consumes approximately less than 26 watts. For example, the lowest maximum weightage consumed by a ceiling fan AERATRON AE2+43 has energy star certified which consumes about 10.6 words 316 CFM/W. It is said to be one of the lowest-wattage ceiling fans which is the most energy-efficient ceiling fan in the market.

Medium Wattage Ceiling Fan:

A ceiling fan of medium wattage consumes approximately wattage which ranges between 26 Watts to 33.9 watts. 

High Wattage Ceiling Fan:

The ceiling fan of high weightage consumes approximately 35 watts or above. During the research, it was noted that the highest wattage a ceiling fan has was 99.8 watts. 

CFM of ceiling fan:

A c FM of a ceiling fan refers to the amount of air in cubic feet per minute that a ceiling fan is able to move. Having a ratio of CFM towards shows the performance of a ceiling fan and also the energy efficiency. As if a ceiling fan that has a high CFM and low power consumption will be more efficient to cool the temperature. The research shows the result of the average CFM/W ceiling fan does have is 287.6.

The following table shows the comparison of CFM according to the size of the ceiling fan and also shows the most efficient model in that size.

Size of a ceiling fanAverage efficiencyMost efficientEfficient model
19″ – 25″60.160.1ARTIKA-FAN-SUR-SL
42″61.661.6Emerson – CF804S-2
44″236.4256Big Ass Fans – FR112C-U1H
50″299.0357AERATRON – AE2+50LED
52″255.0344.9RP Lighting & Fans – 1055
56″249.0319Monte Carlo – 3TAR56***D
62″242.0264Craftmade – SAP62***5
65″244.0244Minka Aire – F870L
68″353.6407Home Decorators Collection – 68-ATRDC
72″320.3385Monte Carlo – 8KGR72
80″295.0295RP Lighting & Fans – 1080W
Ceiling fan

What is the most efficient ceiling fan?

  • A ceiling fan that is considered the most energy-efficient ceiling fan is the 84-inch Fanimation – MAD7997* outdoor or indoor ceiling fan having a CFM per watts rate of 444.
  • Ceiling fans it is the most energy efficient for indoors only is the 84-inch Monte Carlo – 5VMR84***D having a CFM per watts rate of 431.

The following table explains the fan with the most efficient model according to the size of the fan having the average CFM per watts rate and most efficient CFM per Watts rate. 

Ceiling fan sizeAverage efficiencyMost efficient modelMost efficient CFM/W
Small (36″ or less)53.8ATIKA-FAN-SUR-SL60.1
Medium (42″ to 48″)251AERATRON – AE2+43356
Large (50″ to 54″)267.6Emerson – CF955L374.4
Ceiling fan

How to buy efficient ceiling fans?

Getting an energy-efficient ceiling fan will save money for a person. The following are some points that are to be considered to buy an efficient ceiling fan:

  • Airflow or CFM. 
  • Electricity use. 
  • Airflow efficiency or CFM/W.
Ceiling fan
Ceiling fan

Airflow or CFM:

 A person should look at the CFM if they want to buy an efficient ceiling fan because the higher the number of cubic feet per minute the fan will be able to move air in large amounts when it is compared to the CFM of a ceiling fan having a smaller number.

Electricity use:

Look at the watt measurement of the fan as it indicates the measurement for the rate of energy consumption by that fan. So it will also help you to reduce the cost of running a ceiling fan

Airflow efficiency or CFM/W:

Airflow efficiency shows the measurement of the output divided by the input in which the output is the airflow or CFM which is divided by the input which is the electricity used or watts by the ceiling fan


The average wattage which is consumed by a ceiling fan is 31.1 words and the cost to run a large ceiling fan on average is approximately 0.004 per hour. A ceiling fan has the CFM/W which is better than the standing box and a Tower fan which is 287.8. We can also conclude that the most efficient energy ceiling fan is differentiated by the size category that is largest is 84 inches, the large is 54 inches, the medium is 43 inches, and the smaller ranges between 19 inches to 25 inches. 


How many CFM of ceiling fans need in a 12*12 room?

The CFM required is the 1 CFM per square foot of according to the floor area.

What size of ceiling fans is required in a 12*12 room?

a ceiling fan of 42 inches is required in a 12*12 room.

Rick Costa

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