How much does a box fan cost per month in New Hampshire?

About $2.53 a month, assuming 75 W, 10 hours a day, 150 days a year at 27.01¢/kWh.

How many kilowatt-hours does a box fan use?

Roughly 112 kWh a year under these assumptions, or 0.07 kWh for every hour it runs.

Is that expensive compared with other states?

New Hampshire has the 8th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $20.63 a year.

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Cost to run a box fan in New Hampshire (June 2026 rates)

At 27.01¢ per kilowatt-hour — New Hampshire's average residential price in June 2026 — running a box fan costs $30.39 a year. That is 47% more than the national average of $20.63. New Hampshire's residential rate is up 14.9% from June 2025, which moves this appliance from $26.45 to $30.39 a year.

Per hour: 2.0¢
Per day of use: 20.3¢
Per month: $2.53
Per year: $30.39

Assumption: 75 W, 10 hours a day, 150 days a year — 112 kWh a year. 20-inch box fan on high. Low speed roughly halves the draw. Use the calculator to swap in the numbers from your own model.

How New Hampshire compares

New Hampshire pays 27.01¢/kWh, the 8th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $9.75 more a year than the typical U.S. household pays for the same use. Running the same box fan costs $14.75 a year in Nevada and $59.31 in Hawaii, so where you live changes this bill by $44.56 a year.

State	Rate	Per month	Per year
Vermont	24.44¢	$2.29	$27.50
New Jersey	24.95¢	$2.34	$28.07
New Hampshire	27.01¢	$2.53	$30.39
Alaska	28.21¢	$2.64	$31.74
Rhode Island	29.23¢	$2.74	$32.88

States ranked by average residential price, cheapest first. See all 51 states for a box fan.

What else costs about the same in New Hampshire

Electric kettle$29.58 a year in NH Microwave$29.58 a year in NH Incandescent bulb$29.58 a year in NH

Cutting the number down

Pointing one out of an upstairs window at night pulls cool air through the whole house for a fraction of what cooling it costs.
Box fans are cheap to run but not free: continuous summer use adds up to real kilowatt-hours.

Questions

How much does a box fan cost per month in New Hampshire?: About $2.53 a month, assuming 75 W, 10 hours a day, 150 days a year at 27.01¢/kWh.
How many kilowatt-hours does a box fan use?: Roughly 112 kWh a year under these assumptions, or 0.07 kWh for every hour it runs.
Is that expensive compared with other states?: New Hampshire has the 8th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $20.63 a year.