Whole-house fan Electricity Cost in Montana — $34.72/month (2026)
Montana monthly
$34.72
U.S. average monthly
$48.54
Difference
-$13.82
← Whole-house fan (all states) · Montana electricity rate
Quick rate
Daily cost
$1.16
Monthly cost
$34.72
+$0.00 vs typical
Yearly cost
$422.45
kWh / month
270.0 kWh
Local monthly estimate: $34.72 · U.S. average equivalent: $48.54
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ad-after-calculator Quick answer
Running a typical whole-house fan in Montana costs about $1.16/day or $34.72/month at roughly $0.129/kWh, assuming 6 hours of use per day at 1500 W. The U.S. average rate is about $0.180/kWh, so Montana is roughly 28% lower than average for this estimate.
vs U.S. average
Local rate (Montana)
$0.129/kWh
Monthly estimate: $34.72
U.S. average rate
$0.180/kWh
Monthly estimate: $48.54
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ad-after-state-table FAQ
- Most whole-house fan units fall between 750 W and 3000 W, with 1500 W as a typical value for estimates.
- Our calculator uses 1500 W as the typical wattage, within a reported range of 750–3000 W.
- At 6 hours/day and 1500 W, the estimate is about 9.00 kWh per day.
- Using 6 hours/day, the estimate is about 270.0 kWh per month.
- Per hour, whole-house fan uses about 1.500 kWh (at 1500 W).
- At typical use (1500 W and 6 hours/day), the estimate is about $1.16/day at roughly $0.129/kWh.
- At typical use (1500 W and 6 hours/day), the estimate is about $34.72/month at roughly $0.129/kWh.
- Running for one hour at 1500 W costs about $0.193 per hour (using the Montana rate of about $0.129/kWh).
- For typical use, the calculator estimates about $34.72/month for whole-house fan in Montana.
- At the typical Montana residential rate, the estimate is about 270.0 kWh per month, which corresponds to roughly $34.72/month for whole-house fan.
- Compared to the U.S. average, Montana is about 28% lower for this estimate. Monthly cost is about $34.72 in Montana vs $48.54 at the national average.
- Start with practical steps from our tips list (e.g., Seal air leaks and improve insulation to reduce run-time.). Smaller changes reduce kWh usage, which reduces the bill at your local rate.
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Est. monthly at Montana rate ($0.129/kWh)