Updated June 25, 2026
Dehumidifier Running Cost Calculator
Calculate dehumidifier running cost per hour, day, month, and year using your electricity rate.
Live calculator
Calculate your actual running cost
Running this dehumidifier for 8 hours a day, 7 days a week uses about 72.8 kWh each month.
Quick answer
How much does a dehumidifier cost to run?
A 300 W dehumidifier used for 8 hours a day, 7 days a week, consumes about 72.8 kWh per month. At $0.30 per kWh, that is approximately $21.84 per month. Replace these example figures with the wattage and electricity rate from your appliance and bill.
What changes the real running cost?
Dehumidifier power use depends on its type, capacity, humidity target, and room temperature. Compressor models also cycle as the target humidity is reached.
Use effective compressor hours for a realistic estimate, or measure a full day with a plug-in electricity meter.
Example dehumidifier costs
These examples use 300 W for 8 hours a day and 7 days per week.
| Electricity rate | Per hour | Per month | Per year |
|---|---|---|---|
| $0.15 / kWh | $0.04 | $10.92 | $131.04 |
| $0.25 / kWh | $0.07 | $18.20 | $218.40 |
| $0.35 / kWh | $0.10 | $25.48 | $305.76 |
Ways to reduce the cost
Start with changes that reduce active runtime without compromising safety or the job the appliance needs to do.
- Close doors and windows while it runs.
- Choose a realistic humidity target.
- Clean the filter on the manufacturer's schedule.
Estimate only. Actual consumption varies by model, setting, condition, temperature, duty cycle, and tariff. Use a plug-in meter or energy-label figure when accuracy matters.