Dehumidifier Running Cost Calculator with Active Time
A 12-hour schedule does not always mean 12 hours of compressor use. Model the difference.
Your usage
Example inputsResults update as you type. All costs are in U.S. dollars. See result ↓
For your own rate, add per-kWh supply and delivery charges; leave out fixed fees. Find it on your bill →
Example result — edit inputs to match your use
Estimated electricity cost108 kWh per month at 18.31¢/kWh
(500 W ÷ 1,000) × 12 h × 30 days × 60% × $0.1831 = $19.77At these watts and active time: $0.05 per scheduled hour.
Daily is one day of use. Annual repeats your monthly schedule 12 times (not a 365-day forecast). Rates are held constant. Actual use may vary.
↑ Edit inputsSeparate schedule from active compressor time
Enter electrical watts while the compressor operates, then the hours the appliance is available to run. Active time is the percentage of those hours spent at the entered power. A 500 W unit scheduled for 12 hours at 60% active time uses an illustrative 3.6 kWh/day. Fan-only and standby consumption are not separately modeled.
Use measurements to narrow the estimate
Pints per day measures moisture-removal capacity, not electrical power. Use input watts or a suitable plug-in energy meter. Basement temperature, infiltration, the humidistat setting, and weather influence cycling. Compare 40%, 60%, and 80% active time as scenarios, not predictions. For seasonal use, apply your expected months rather than the all-year result.
Can I assume it uses full power all day?
That provides a continuous-run scenario only. A humidistat may stop the compressor after the target humidity is reached. A measured daily kWh value is more reliable when compressor and fan use both vary.
Make the estimate yours
Replace the example values with measurements or the product label. Select your state for an official average, then override it with your bill’s variable rate when available.
Read the calculations and assumptionsDehumidifier cost at different electricity rates
This static worked example uses 500 W × 12 hours/day × 30 days × 60% active time. These chosen rates show price sensitivity; they are not utility offers. The interactive result above uses your edited inputs.
| Electricity price | Monthly cost | Annual cost* |
|---|---|---|
| 12¢/kWh | $12.96 | $155.52 |
| 20¢/kWh | $21.60 | $259.20 |
| 30¢/kWh | $32.40 | $388.80 |
*Annual cost repeats this monthly pattern 12 times. Use your actual season length for seasonal equipment. Values are rounded only for display.
Practical energy guides
What Does It Cost to Run a Dehumidifier 24 Hours a Day?
Compare 24-hour dehumidifier cost scenarios, distinguish compressor runtime from time plugged in, and turn measured daily kWh into a seasonal budget.
Understand your billHow to Find Your Electricity Rate on Your Bill
Find the right cents-per-kWh rate for an appliance calculator. Separate supply, delivery, fixed fees, and time-of-use charges with a worked bill example.