How Much Electricity Does A Dehumidifier Use?
Typical dehumidifier: 500 W for 8 h a day4 kWh/day · $22.58/month
A 50-pint dehumidifier draws about 450–700 W while the compressor runs. Change the numbers below for your own dehumidifier and electricity rate.
W
h
¢/kWh
Default rate: US average residential rate of 18.56¢/kWh (EIA, March 2026, via Jouleio). Your bill shows your own rate per kWh.
Result–
Dehumidifier running cost by hours
| Hours a day | kWh a month | Cost a month | Cost a year |
|---|---|---|---|
| 1 | 15.2 | $2.82 | $33.87 |
| 2 | 30.4 | $5.65 | $67.74 |
| 4 | 60.8 | $11.29 | $135.49 |
| 6 | 91.3 | $16.94 | $203.23 |
| 8 | 121.7 | $22.58 | $270.98 |
| 12 | 182.5 | $33.88 | $406.46 |
| 24 | 365 | $67.75 | $812.93 |
At the US average residential rate of 18.56¢/kWh (EIA, March 2026, via Jouleio).
Other appliances
Questions
How much does it cost to run a dehumidifier?
About $22.58 a month for 8 hours a day at 500 W and 18.56¢ per kWh.
How can I measure the real usage?
A plug-in energy meter shows the actual kWh an appliance uses over a few days, which is more accurate than the label rating.