How much does a dehumidifier cost to run?
Updated August 2026 · average residential rates
Quick answer: a dehumidifier (300–700 W for 50-pint units) costs about 5.1¢ per hour to run at the US average rate. With 10 hours/day in humid season, that's 50.7¢/day, $15.41/month and $185/year — using ~3.0 kWh a day. Your state's rate can move this from $10.21 to $38.40 monthly.
Run your own numbers
300–700 W for 50-pint units · default assumes 10 hours/day in humid season · compressor duty cycle ~60% factored in
Uses about 3.0 kWh/day at 15.6¢/kWh (Texas). National average would be $15.41/month.
Dehumidifier cost by state
| State | Rate | Per hour | Per month |
|---|---|---|---|
| Alabama | 15.6¢/kWh | 4.7¢ | $14.23 |
| Alaska | 24.9¢/kWh | 7.5¢ | $22.71 |
| Arizona | 15.2¢/kWh | 4.6¢ | $13.86 |
| Arkansas | 12.7¢/kWh | 3.8¢ | $11.58 |
| California | 31.8¢/kWh | 9.5¢ | $29.00 |
| Colorado | 15.3¢/kWh | 4.6¢ | $13.95 |
| Connecticut | 32.3¢/kWh | 9.7¢ | $29.46 |
| Delaware | 16.8¢/kWh | 5.0¢ | $15.32 |
| District of Columbia | 17.6¢/kWh | 5.3¢ | $16.05 |
| Florida | 15.1¢/kWh | 4.5¢ | $13.77 |
| Georgia | 14.2¢/kWh | 4.3¢ | $12.95 |
| Hawaii | 42.1¢/kWh | 12.6¢ | $38.40 |
| Idaho | 11.6¢/kWh | 3.5¢ | $10.58 |
| Illinois | 16.4¢/kWh | 4.9¢ | $14.96 |
| Indiana | 15.7¢/kWh | 4.7¢ | $14.32 |
| Iowa | 13.7¢/kWh | 4.1¢ | $12.49 |
| Kansas | 14.3¢/kWh | 4.3¢ | $13.04 |
| Kentucky | 13.1¢/kWh | 3.9¢ | $11.95 |
| Louisiana | 12.1¢/kWh | 3.6¢ | $11.04 |
| Maine | 25.6¢/kWh | 7.7¢ | $23.35 |
| Maryland | 18.1¢/kWh | 5.4¢ | $16.51 |
| Massachusetts | 31.2¢/kWh | 9.4¢ | $28.45 |
| Michigan | 19.4¢/kWh | 5.8¢ | $17.69 |
| Minnesota | 15.1¢/kWh | 4.5¢ | $13.77 |
| Mississippi | 13.6¢/kWh | 4.1¢ | $12.40 |
| Missouri | 12.6¢/kWh | 3.8¢ | $11.49 |
| Montana | 12.8¢/kWh | 3.8¢ | $11.67 |
| Nebraska | 12.1¢/kWh | 3.6¢ | $11.04 |
| Nevada | 15.4¢/kWh | 4.6¢ | $14.04 |
| New Hampshire | 25.2¢/kWh | 7.6¢ | $22.98 |
| New Jersey | 19.6¢/kWh | 5.9¢ | $17.88 |
| New Mexico | 14.6¢/kWh | 4.4¢ | $13.32 |
| New York | 24.6¢/kWh | 7.4¢ | $22.44 |
| North Carolina | 14.1¢/kWh | 4.2¢ | $12.86 |
| North Dakota | 11.2¢/kWh | 3.4¢ | $10.21 |
| Ohio | 16.3¢/kWh | 4.9¢ | $14.87 |
| Oklahoma | 12.2¢/kWh | 3.7¢ | $11.13 |
| Oregon | 14.8¢/kWh | 4.4¢ | $13.50 |
| Pennsylvania | 18.4¢/kWh | 5.5¢ | $16.78 |
| Rhode Island | 30.4¢/kWh | 9.1¢ | $27.72 |
| South Carolina | 14.7¢/kWh | 4.4¢ | $13.41 |
| South Dakota | 12.6¢/kWh | 3.8¢ | $11.49 |
| Tennessee | 13.2¢/kWh | 4.0¢ | $12.04 |
| Texas | 15.6¢/kWh | 4.7¢ | $14.23 |
| Utah | 11.7¢/kWh | 3.5¢ | $10.67 |
| Vermont | 21.6¢/kWh | 6.5¢ | $19.70 |
| Virginia | 14.6¢/kWh | 4.4¢ | $13.32 |
| Washington | 12.3¢/kWh | 3.7¢ | $11.22 |
| West Virginia | 14.8¢/kWh | 4.4¢ | $13.50 |
| Wisconsin | 17.2¢/kWh | 5.2¢ | $15.69 |
| Wyoming | 11.8¢/kWh | 3.5¢ | $10.76 |
FAQ
How much electricity does a dehumidifier use?+
A typical dehumidifier draws 300–700 W for 50-pint units. At 10 hours/day in humid season (with a ~60% duty cycle), that's about 3.0 kWh per day.
How much does a dehumidifier cost to run per month?+
About $15.41 per month at the US average residential rate of 16.9¢/kWh — ranging from roughly $10.21 in North Dakota to $38.40 in Hawaii.
Is it expensive to leave a dehumidifier on?+
Running it costs about 5.1¢ per hour at average rates. Multiply by your actual hours — and check your state's rate above, since electricity prices vary almost 4× across the US.