What does running a dehumidifier cost?
Pick your unit size (or enter its exact wattage from the label), set your runtime and rate, and see the monthly bill impact.
Evidence-checked. Facts and figures on this page are verified against published standards and government sources (EIA average rates, ENERGY STAR, published wattage data). Last verified July 2026 — our methodology.
Estimated cost
—/month
- Per day
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- Per year
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- Energy used
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- ENERGY STAR model saves
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Cost = watts ÷ 1,000 × hours × rate. ENERGY STAR–certified dehumidifiers use roughly 13–20% less energy than standard models of the same capacity (estimate shown at 15%). Month = 30 days.
How to lower the number
Runtime beats wattage. A correctly sized unitreaches its target and cycles off; an undersized one runs all day. Set the humidistat to 45–50% rather than "continuous," clean the filter monthly so the coils breathe, and close doors and windows in the space while it runs.