How Much Does a Whole-house fan Cost to Run? (2026 Calculator)
Typical setup: 1500 W · 6 h/day · $0.180/kWh
Daily
$1.62
Monthly
$48.54
Yearly
$590.57
Quick rate
Daily cost
$1.62
Monthly cost
$48.54
+$0.00 vs typical
Yearly cost
$590.57
kWh / month
270.0 kWh
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ad-after-calculator Quick answer
A typical whole-house fan uses about 1500 W and costs about $1.51/day or $45.36/month at the U.S. average rate of $0.17/kWh, assuming 6 hours of use per day. At the same rate, costs range from about $0.76/day (750 W) to $3.02/day (3000 W).
State explorer
Quickly spot cheapest, highest, and near-average monthly costs.
Top 10 cheapest
Top 10 highest
- Hawaii $107.43
- Massachusetts $84.13
- Maine $82.97
- California $81.78
- Rhode Island $81.38
- New York $76.60
- Connecticut $76.41
- New Hampshire $71.06
- Alaska $68.90
- District of Columbia $64.04
Cost by state (monthly)
At typical 1500 W and 6 h/day. Rates from our dataset (see methodology ). Open a state for a dedicated calculator page.
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ad-after-state-table Wattage range
| Level | Watts | Est. monthly @ avg rate |
|---|---|---|
| Low | 750 W | $24.27 |
| Typical | 1500 W | $48.54 |
| High | 3000 W | $97.08 |
Energy saving tips
- Seal air leaks and improve insulation to reduce run-time.
- Use thermostats or timers so the appliance only runs when needed.
- Combine this appliance with fans or shading to reduce demand.
FAQ
- Most whole-house fan units fall between 750 W and 3000 W, with 1500 W as a typical operating value for estimates.
- Our estimates use 1500 W as the typical wattage, within a reported range of 750–3000 W.
- At typical use (6 hours/day at 1500 W), the estimate is about 9.00 kWh/day and 270.0 kWh/month at the U.S. average rate.
- With 6 hours/day and 1500 W, this appliance uses about 9.00 kWh per day.
- At 6 hours/day, the monthly estimate is about 270.0 kWh per month.
- Per hour, the typical draw is about 1.500 kWh (at 1500 W).
- At the U.S. average electricity rate of $0.17/kWh, the typical daily cost is about $1.51/day for 6 hours/day.
- At the U.S. average electricity rate of $0.17/kWh, the typical monthly cost is about $45.36/month at 6 hours/day.
- Running for one hour at 1500 W costs about $0.25/hour (using 0.17 $/kWh as the U.S. average).
- With typical use (6 hours/day at 1500 W), the estimate is about $1.51/day or $45.36/month at the U.S. average rate.
- The estimate is about 270.0 kWh per month, which corresponds to roughly $45.36/month at the U.S. average rate. Your real bill depends on your rate and runtime.
- Use energy-saving tips tailored to this appliance. For example: Seal air leaks and improve insulation to reduce run-time. — reducing kWh reduces the bill at your local rate.