How much does it cost to run a dehumidifier?

Typical wattage

785 W

Cost per hour

$0.14

at 18.16¢/kWh (US avg)

Energy per hour

0.79 kWh

A dehumidifier typically draws 785 W. At the US average residential rate of 18.16¢ per kWh (12-month average to August 2026), that is about $0.14 for every hour it runs at full power.

Single typical figure; the compressor cycles on and off as humidity changes.

Cost per day and per month

Use per day	kWh per day	Cost per day	Cost per month
1 hour	0.79	$0.14	$4.34
2 hours	1.57	$0.29	$8.67
4 hours	3.14	$0.57	$17.35
8 hours	6.28	$1.14	$34.69

Scenarios show full-power hours. Appliances with thermostats or cycling compressors draw full power for only part of the time they are switched on.

Cost per hour by state

State	Rate (12-mo)	Cost per hour
Alabama	16.44¢	$0.13
Alaska	26.94¢	$0.21
Arizona	15.39¢	$0.12
Arkansas	13.57¢	$0.11
California	32.34¢	$0.25
Colorado	17.17¢	$0.13
Connecticut	27.42¢	$0.22
Delaware	17.98¢	$0.14
District of Columbia	24.48¢	$0.19
Florida	15.41¢	$0.12
Georgia	15.17¢	$0.12
Hawaii	44.27¢	$0.35
Idaho	12.77¢	$0.10
Illinois	18.91¢	$0.15
Indiana	16.90¢	$0.13
Iowa	14.20¢	$0.11
Kansas	15.13¢	$0.12
Kentucky	13.94¢	$0.11
Louisiana	13.02¢	$0.10
Maine	29.60¢	$0.23
Maryland	21.18¢	$0.17
Massachusetts	30.39¢	$0.24
Michigan	21.28¢	$0.17
Minnesota	16.28¢	$0.13
Mississippi	14.85¢	$0.12
Missouri	13.97¢	$0.11
Montana	13.94¢	$0.11
Nebraska	12.74¢	$0.10
Nevada	13.45¢	$0.11
New Hampshire	26.95¢	$0.21
New Jersey	23.74¢	$0.19
New Mexico	16.51¢	$0.13
New York	28.60¢	$0.22
North Carolina	14.79¢	$0.12
North Dakota	12.35¢	$0.10
Ohio	18.41¢	$0.14
Oklahoma	13.81¢	$0.11
Oregon	15.53¢	$0.12
Pennsylvania	20.86¢	$0.16
Rhode Island	29.44¢	$0.23
South Carolina	15.77¢	$0.12
South Dakota	14.28¢	$0.11
Tennessee	13.61¢	$0.11
Texas	15.98¢	$0.13
Utah	13.26¢	$0.10
Vermont	23.90¢	$0.19
Virginia	16.64¢	$0.13
Washington	14.20¢	$0.11
West Virginia	15.53¢	$0.12
Wisconsin	18.79¢	$0.15
Wyoming	14.01¢	$0.11

Calculate with your own numbers

Frequently asked questions

How many watts does a dehumidifier use?

A typical dehumidifier uses 785 W, according to Virginia Cooperative Extension. Check the label on your model.

How much does it cost to run a dehumidifier per hour?

About $0.14 per hour at full power, at the US average rate of 18.16¢ per kWh.

How much does it cost to run a dehumidifier for a month?

Running it 1 hour a day at full power costs about $4.34 a month at the US average rate. Your cost depends on your hours and your state's rate.

How many kWh does a dehumidifier use?

About 0.79 kWh per hour at full power (watts ÷ 1,000).

How can I find my dehumidifier's exact wattage?

Check the rating label or manual, or measure it with a plug-in electricity usage meter, which shows real watts and kWh.

Rates: EIA, 12-month residential average. Cost = watts × hours ÷ 1,000 × rate (US Department of Energy method).

Sources

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