Dehumidifier electricity cost calculator
Estimate dehumidifier running cost using compressor power, daily schedule, humidity-driven duty cycle, and local tariff.
Worked calculation
A complete dehumidifier example
0.450 kW is multiplied by scheduled time and the 60% active-runtime assumption. The inputs are examples, not claims about every device. Replace each one with the label, meter reading, schedule, and tariff that apply to you.
Cost = compressor kW × scheduled hours × duty cycle × tariff450 W · 10 hours/day · 7 days/week · 60% active
- Monthly energy
- 81.9 kWh
- Monthly cost
- US$14.74
- Annual cost
- US$176.90
Transparent method
The calculation
Cost = compressor kW × scheduled hours × duty cycle × tariffLike an air conditioner, a compressor dehumidifier cycles as the target humidity is reached. Damp conditions, room leakage, and set point determine active runtime.
Read the full methodology →Sensitivity check
Run three scenarios.
MaintenanceUse a low duty cycle after the room dries.
Typical damp roomStart around 60% active runtime.
Laundry or floodingTest a high-duty temporary case.
Use the result well
What can change the answer?
- Desiccant units have a different power profile.
- Cold rooms can reduce compressor extraction performance.
- A blocked filter can increase runtime.
Calculation standards
Visible inputs. Reproducible results.
WhoPowerCost Lab's research desk maintains the formulas, market notes, and worked examples.
HowEnergy, tariff, and behavioural assumptions stay separate so readers can replace one input without hiding the others.
WhyThe page exists to answer an operating-cost decision. Advertising never changes a formula, default, or recommendation.