In short
- According to Argentina’s official table (ENRE), a ceiling fan uses about 60 W and a pedestal fan about 90 W.
- At 8 hours a day, that’s about 14.4 kWh a month for the ceiling fan and 21.6 for the pedestal fan.
- A small inverter air conditioner (2,200 frigories, about 8,700 BTU) uses in an hour what 11 ceiling fans do; a standard one, what 17 do.
- According to ENERGY STAR, fans cool people, not rooms: if nobody’s there, turn it off.
Words you’ll see
- Watt (W): power at any moment. Wh and kWh: energy over time (1 kWh = 1,000 Wh). More in watts, kWh, volts and amps.
- BTU and frigories: two ways of stating how much cooling an air conditioner gives. 2,200 frigories is about 8,700 BTU.
- Inverter: an air conditioner that speeds up or slows down to match the cooling needed instead of switching on and off.
How many watts does a fan use?
- Ceiling: 60 W; pedestal: 90 W, according to the table from Argentina’s electricity regulator (ENRE).
- The U.S. Department of Energy table reproduced by Virginia Tech gives wider ranges: 65 to 175 W for ceiling fans, 55 to 250 W for window fans and 240 to 750 W for whole-house fans.
- Speed changes the draw: lower settings use less than the top speed. The figure for yours is on its label or box.
How much does it use per month?
Watts × hours × days. At 8 hours a day for 30 days:
- Ceiling: 60 × 8 × 30 = 14.4 kWh.
- Pedestal: 90 × 8 × 30 = 21.6 kWh.
That’s what the electricity usage calculator gives for those fans at 8 hours. Enter your own.
Fan or air conditioner: the difference
In the same ENRE table, a 2,200-frigorie air conditioner is rated at 1,350 W and averages 1,013 Wh per hour; its inverter version, 878 W and 658 Wh. They’re the same figures as in our article on how much electricity an air conditioner uses.
- Inverter A/C ÷ ceiling fan: 658 ÷ 60 = about 11 times.
- Standard A/C ÷ ceiling fan: 1,013 ÷ 60 = about 17 times.
They don’t do the same job: an A/C lowers the room’s temperature and a fan doesn’t. According to ENERGY STAR, a fan cools the people under it; so switching it off when you leave the room saves energy without losing anything.
Worked example: a night with a fan or with A/C
- Ceiling fan, 8 hours: 60 × 8 = 480 Wh a night.
- 2,200-frigorie inverter A/C, 8 hours: 658 × 8 = 5,264 Wh a night.
- A month of nights: 14.4 kWh with the fan versus about 158 kWh with the A/C.
- At an example price of $0.15 per kWh (use the one on your bill): about $2.16 a month versus about $23.70.
In a power outage: how long it runs on a battery
A fan is one of the few ways to stay cool on a small battery. With a 1,024 Wh portable power station, and counting the way the power outage battery calculator does (using 80% of a lithium battery and 85% inverter efficiency), you have 1,024 × 0.8 × 0.85 = 696 Wh:
- 60 W ceiling fan: 696 ÷ 60 = about 11.6 hours.
- 90 W pedestal fan: 696 ÷ 90 = about 7.7 hours.
A small air conditioner would drain it in just over an hour.
Common mistakes
- Leaving it on in an empty room. Fans cool people, not rooms (ENERGY STAR).
- Thinking it uses as much as an A/C. A small A/C uses in an hour what 11 to 17 ceiling fans do.
- Buying the first one you see. ENERGY STAR certified ceiling fans are up to 44% more efficient than conventional ones.
When to call an electrician
A pedestal fan just plugs in. A ceiling fan is wired into the house and hung from the ceiling: mounting it, wiring it and making sure the support holds its weight is a job for a licensed electrician. Call one too if the fan wobbles badly, sparks or smells burnt.
Sources and references
- Ente Nacional Regulador del Gas y la Electricidad (Argentina). Consumo básico de electrodomésticos (ceiling fan, 60 W; pedestal fan, 90 W; 2,200-frigorie air conditioner, 1,350 W and 1,013 Wh per hour).
- Grisso, R., Walker, M. and Ignosh, J., Virginia Cooperative Extension (Virginia Tech), 2020. Estimating Appliance and Home Electronic Energy Use (Department of Energy table: ceiling fans 65–175 W, window fans 55–250 W, whole-house fans 240–750 W).
- ENERGY STAR (EPA and U.S. Department of Energy). Ceiling Fans: Installation and Usage Tips (fans cool people, not rooms; turn it off if the room is unoccupied) and Ceiling Fans (up to 44% more efficient).
Frequently asked questions
How many watts does a ceiling fan use?
About 60 W according to Argentina’s ENRE table; the U.S. Department of Energy table gives 65 to 175 W. A pedestal fan, about 90 W.
How much electricity does a fan use per month?
At 8 hours a day for 30 days, a ceiling fan uses 60 × 8 × 30 = 14.4 kWh, and a pedestal fan 90 × 8 × 30 = 21.6 kWh.
Does a fan use less than an air conditioner?
Far less. A 2,200-frigorie (about 8,700 BTU) inverter A/C averages 658 Wh per hour, about 11 times a 60 W ceiling fan; a standard one, about 17 times. But a fan doesn’t cool the room: it cools whoever is under it.
