Ceiling fan vs air conditioning: what each costs

The verdict

The fan is dramatically cheaper and cannot replace air conditioning — both are true. A fan cools people, not rooms, by moving air across skin; it lowers the temperature of nothing. What it does is let most people accept a setpoint about four degrees higher for the same comfort, and since cooling energy moves roughly 3–5% per degree, running the fan to raise the thermostat is close to free.

Side by side

Ceiling fan and central air conditioner are costed by the same function from the same dataset, so the $411 between them is a difference in the appliances and not in how each was measured. Ceiling fan draws an average 37 W across the hours it runs; central air conditioner draws 2,125 W across its own.

Both at 18.34¢/kWh, the EIA residential average for June 2026. Ten years is roughly the service life of either.

The assumptions behind those figures

Nothing above is a manufacturer’s claim. 35 W at 100% for 8 hours a day, 180 days a year, is where ceiling fan’s 53 kWh comes from; 3,500 W at 60% for 9 hours over 120 days is where central air conditioner’s 2,295 kWh comes from. The duty cycle is the input most published comparisons leave out, and it is why the ratings and the running costs are not in the same proportion here.

Change any of these on the appliance’s own page and every figure moves with it. The duty cycle is a property of the machine; the hours are a property of you.

What the gap is worth at your rate

Nothing here is a purchase decision, so there is no payback to compute. But $411 is the gap at the national average, and what it is worth to you depends on your rate — which varies more across the country than the difference between these two.

The gap in your state

The appliances are the same everywhere; the rate is not. The gap between these two is worth $1,182 a year in Hawaii and $294 in Nevada — 4× apart, on identical appliances.

A year of each, by state. Residential average price, EIA June 2026.

Questions

Other head-to-heads

• Heat pump vs electric furnace

  $1,230 a year apart

  Is a heat pump actually cheaper to run than electric resistance heat?

• Window vs portable air conditioner

  $32 a year apart

  Is a portable air conditioner more expensive to run than a window unit?

• Oil-filled radiator vs fan heater

  $33 a year apart

  Is an oil-filled radiator cheaper to run than a fan heater?

Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, June 2026. U.S. Government work, public domain.

How every figure on this page is computed · Where the data comes from