Dehumidifier Electricity Cost Calculator

Written by the Dehumidifier for Basement editorial team and reviewed for source accuracy. Last updated July 2026.

Enter your unit's wattage, how long it runs, and your own electricity rate to see estimated daily, monthly and annual operating cost.

How the estimate is calculated

Monthly operating cost = watts ÷ 1,000 × operating hours per day × 30 × electricity rate. Daily cost drops the ×30, annual cost uses ×365. The default rate of $0.16 per kWh is the U.S. residential average from the Energy Information Administration; rates vary widely by state and season, so replacing it with the figure from your own utility bill gives a much closer estimate.

Where to find your wattage

• The nameplate sticker on the back or side of the unit.
• The specification page in the owner’s manual.
• The manufacturer’s product page for your exact model number.
• A plug-in energy meter, which also captures real cycling behavior.

Why real bills differ from the estimate

A dehumidifier does not draw full wattage continuously. It cycles off when the space reaches the setpoint, draws less in a defrost cycle, and works harder in July than in October. Treat this as a planning estimate: use full-hour assumptions for the damp season and lower run hours once the basement stabilizes near the target of 30–50% relative humidity.

Cutting the number down

1. Raise the setpoint toward 50% rather than chasing 35%.
2. Fix bulk-water sources first — a dehumidifier fighting a leak never cycles off.
3. Choose a certified unit with a better efficiency rating in the same capacity class.
4. Keep the filter and coil clean so run time per pint stays low.
5. Drain continuously so the unit is not idle with a full bucket during peak humidity.

Related: basement dehumidifier running costs, efficient models compared, should it run all the time?