Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your ceiling fan.
This setup uses about 14 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 4 | $1.36 |
| Page example | 8 | $2.71 |
| Longer runtime | 12 | $4.07 |
Same 60-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.06 kW × 8 hr × $0.1883 = $0.09 per day
Convert watts to kilowatts, multiply by the active hours used each day, then multiply by the electricity price in dollars per kWh. Multiply the daily result by 30 for the monthly estimate shown above.
How to read this estimate
A ceiling fan uses far less electricity than compressor-based cooling. It makes people feel cooler by moving air but does not lower the room temperature, which is why there is little reason to leave it running in an empty room.
Use this as a baseline until you can check the label or measure the ceiling fan directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Motor type, fan diameter, and selected speed
- 02
Hours used and number of fans operating
- 03
Integrated light wattage, if the fixture includes one
Ways to spend less
- Switch the fan off when the room is empty.
- Use the lowest speed that maintains comfort.
- Raise the air-conditioning setpoint when the fan makes that comfortable.