How Much Does It Cost to Run a Ceiling Fan?
Updated July 27, 2026
Just want the number? Use the energy cost calculator.
A ceiling fan costs about 1 to 3 dollars a month to run, drawing 10 to 75 watts depending on blade span and speed setting. At the U.S. average residential electricity rate of about 17 cents per kWh, a 50-watt fan running 8 hours a day adds up to roughly 2 dollars a month. The actual figure depends on your local rate, how many hours the fan runs, and whether you offset the air conditioner while the fan is on.
The formula
Electricity is billed in kilowatt-hours. The math is straightforward:
cost per hour = (watts / 1,000) x electricity rate
A 50-watt fan at 17 cents per kWh costs 0.85 cents per hour. Run it 8 hours a day and that is about 6.8 cents per day, or roughly 2 dollars over a 30-day month. Low speed typically cuts wattage in half or better, so switching down one setting can noticeably reduce the cost if you run the fan long hours.
Wattage by blade span and speed
Blade span determines motor size. The nameplate wattage printed on the motor housing or in the manual is the maximum draw at high speed; low and medium speeds pull less.
| Fan size | Wattage at high speed | Wattage at low speed |
|---|---|---|
| Small (42 inches or less) | 15 to 30 W | 8 to 15 W |
| Standard (52 inches) | 30 to 55 W | 15 to 25 W |
| Large (60 inches or more) | 55 to 80 W | 25 to 40 W |
If your fan’s nameplate lists only amps rather than watts, multiply the amperage by 120 to get watts. A 0.4-amp motor draws about 48 watts.
Monthly cost examples
The U.S. Energy Information Administration tracks residential rates monthly. The national average was near 17 cents per kWh in 2024, though northeastern and Pacific states often run 25 to 30 cents or more.
| Wattage | Hours per day | Monthly cost at 17 cents/kWh | Monthly cost at 25 cents/kWh |
|---|---|---|---|
| 25 W | 8 | about 1 dollar | about 1.50 dollars |
| 50 W | 8 | about 2 dollars | about 3 dollars |
| 75 W | 8 | about 3 dollars | about 4.50 dollars |
| 50 W | 16 | about 4 dollars | about 6 dollars |
If you run multiple fans in different rooms, add each one separately. Two 50-watt fans running 8 hours a day together cost about 4 dollars a month at the 17-cent rate.
The fan-and-AC tradeoff
Ceiling fans do not lower room temperature. They cool people through the wind chill effect, increasing evaporative cooling on the skin. The U.S. Department of Energy notes that a ceiling fan can make a room feel up to 4 degrees Fahrenheit cooler, which lets you raise the thermostat by 4 degrees while maintaining the same level of comfort. Since air conditioners typically use 8 to 15 times more electricity than a ceiling fan, that tradeoff usually comes out well ahead.
The math shifts when no one is in the room. A fan running in an empty space provides no comfort benefit and just adds to the bill. Turning the fan off when you leave is the single highest-return habit for controlling fan costs. For the full picture of what your AC contributes to the monthly bill, the central air conditioning running cost guide walks through the same per-kWh calculation for central systems.
Energy Star certified fans
The EPA Energy Star program certifies ceiling fans that move more air per watt than standard models. Certified fans use about 60 percent less energy than conventional fans while delivering comparable airflow. In practice that often means 20 to 35 watts instead of 50 for a standard-room fan. The program maintains a searchable list of certified models with tested airflow and wattage figures, which makes it easy to compare actual performance rather than relying on the blade span alone.
For long-run fans in bedrooms or living rooms, a certified model can reduce annual fan electricity by 10 to 20 dollars compared to a non-certified unit of similar size.
How fan direction affects cost in winter
Most ceiling fans include a reverse switch. In winter, running the fan clockwise on low speed pushes warm air that collects near the ceiling back down toward the floor. This recirculation can reduce heating demand in rooms with high ceilings. At low speed, a large fan draws as little as 25 to 30 watts, making winter fan use a low-cost way to improve comfort distribution.
Find your exact monthly cost
Take the wattage from your fan’s nameplate, enter it in the energy cost calculator along with your local rate from a recent electric bill and the hours per day you typically run the fan. The result breaks out cost per hour, per day, and per month with the formula shown. If you run the fan at low speed most of the time, use the low-speed wattage for a more realistic estimate.
For a broader view of seasonal appliance costs, the dehumidifier running cost guide applies the same per-kWh formula to a common summer appliance and shows how to account for variable compressor cycles.