How much does it cost to run a dehumidifier in California?
A 500-watt dehumidifier costs about $0.17 an hour in California, or about $59.85 a month at 12 hours a day.
California electricity averages 33.25¢ per kWh, about 83% more than the U.S. average of 18.19¢. It ranks 50 of 51 from cheapest to most expensive.
Your cost
Cost by wattage
| Wattage | Hour | Day | Month | Year |
|---|---|---|---|---|
| Low (300 W) | $0.10 | $1.20 | $35.91 | $437 |
| Typical (500 W) | $0.17 | $2.00 | $59.85 | $728 |
| High (700 W) | $0.23 | $2.79 | $83.79 | $1,019 |
Day, month and year assume 12 hours of use a day.
Other home costs
| Appliance | Typical | Per month |
|---|---|---|
| Hot tub | 250 W | $59.85 |
| Humidifier | 100 W | $9.98 |
| Sump pump | 800 W | $7.98 |
Ways to spend less
- Run humidity and water equipment only as much as the room needs; a humidistat or timer helps.
- Keep covers and lids on (hot tubs especially) to cut heat loss.
Monthly cost in every state
| State | Rate | Per month |
|---|---|---|
| North Dakota | 12.36¢ | $22.25 |
| Nebraska | 12.90¢ | $23.22 |
| Idaho | 12.96¢ | $23.33 |
| Utah | 13.16¢ | $23.69 |
| Louisiana | 13.35¢ | $24.03 |
| Nevada | 13.53¢ | $24.35 |
| Oklahoma | 13.58¢ | $24.44 |
| Arkansas | 13.61¢ | $24.50 |
| Tennessee | 13.87¢ | $24.97 |
| Montana | 13.95¢ | $25.11 |
| Wyoming | 13.95¢ | $25.11 |
| Missouri | 13.96¢ | $25.13 |
| Iowa | 14.20¢ | $25.56 |
| Kentucky | 14.27¢ | $25.69 |
| Washington | 14.40¢ | $25.92 |
| South Dakota | 14.50¢ | $26.10 |
| North Carolina | 14.94¢ | $26.89 |
| New Mexico | 15.08¢ | $27.14 |
| Mississippi | 15.19¢ | $27.34 |
| Kansas | 15.21¢ | $27.38 |
| Florida | 15.30¢ | $27.54 |
| Georgia | 15.40¢ | $27.72 |
| Oregon | 15.40¢ | $27.72 |
| Arizona | 15.44¢ | $27.79 |
| West Virginia | 15.47¢ | $27.85 |
| South Carolina | 15.93¢ | $28.67 |
| Texas | 16.06¢ | $28.91 |
| Minnesota | 16.25¢ | $29.25 |
| Alabama | 16.54¢ | $29.77 |
| Colorado | 16.72¢ | $30.10 |
| Virginia | 16.83¢ | $30.29 |
| Indiana | 17.04¢ | $30.67 |
| Delaware | 17.86¢ | $32.15 |
| Ohio | 18.70¢ | $33.66 |
| Wisconsin | 19.00¢ | $34.20 |
| Illinois | 19.22¢ | $34.60 |
| Pennsylvania | 21.04¢ | $37.87 |
| Maryland | 21.30¢ | $38.34 |
| Michigan | 21.53¢ | $38.75 |
| Vermont | 23.95¢ | $43.11 |
| New Jersey | 23.98¢ | $43.16 |
| District of Columbia | 24.66¢ | $44.39 |
| New Hampshire | 26.79¢ | $48.22 |
| Alaska | 27.09¢ | $48.76 |
| Connecticut | 27.97¢ | $50.35 |
| Rhode Island | 29.22¢ | $52.60 |
| New York | 29.38¢ | $52.88 |
| Maine | 29.99¢ | $53.98 |
| Massachusetts | 30.14¢ | $54.25 |
| California | 33.25¢ | $59.85 |
| Hawaii | 46.28¢ | $83.30 |
At 500 watts for 12 hours a day, 30 days a month. Rates are average residential prices from the U.S. Energy Information Administration, January–July 2026 (EIA Electric Power Monthly). Your bill's rate may differ, so enter your own in the calculator.