Calculate your cost
Start with a representative input, then edit all three numbers.
This setup uses about 120 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 4 | $11.30 |
| Starting point | 8 | $22.60 |
| Longer runtime | 12 | $33.89 |
Same 500-watt input and 18.83¢/kWh rate; only runtime changes.
The quick formula
0.5 kW × 8 hours × $0.1883 = $0.75 per day
Convert watts to kilowatts, multiply by the active hours used each day, then multiply by the electricity price in dollars per kWh. Multiply the daily result by 30 for the monthly estimate shown above.
How to read this estimate
A dehumidifier can run for long stretches in a damp basement or humid climate. Its monthly cost depends more on compressor runtime and the humidity target than on whether the fan appears to stay on.
The starting values keep this page useful before you have a label or meter reading. They do not describe every model, climate, operating mode, or household.
What changes the cost?
- 01
Room humidity, temperature, and moisture infiltration
- 02
Pint capacity, efficiency, and selected humidity target
- 03
Drain setup, filter condition, and compressor duty cycle
Ways to spend less
- Set a reasonable humidity target instead of the minimum setting.
- Close basement windows and address water intrusion.
- Clean the filter and keep the intake and exhaust unobstructed.