Cheapest Type of Dehumidifier to Run
Compressor vs desiccant vs Peltier costs
Quick Answer
Compressor dehumidifiers (400–700W) are the standard for rooms and basements, costing $37.62/month at 12 hours daily. Desiccant models use similar wattage but work better in cold spaces below 60°F. Peltier (thermoelectric) units use only 50W — 90% less — but remove far less moisture and only suit closets and small bathrooms.
Citation-ready summary
Summary
Compressor dehumidifiers (400–700W) are the standard for rooms and basements, costing $37.62/month at 12 hours daily. Desiccant models use similar wattage but work better in cold spaces below 60°F. Peltier (thermoelectric) units use only 50W — 90% less — but remove far less moisture and only suit closets and small bathrooms.
Formula
Cost = (watts ÷ 1,000) × hours used × electricity rate per kWh.
Data used
Calculator results use user-entered wattage and usage hours, combined with residential electricity rates from the selected country or state.
Sources
Limits
These are estimates, not exact utility bills. Actual costs depend on your tariff, taxes, appliance cycling, efficiency, and how you use the appliance.