What does a dehumidifier cost?

Typical estimate: 300 W for 8 hours, on damp days rather than all year.

Per use at the cap: £0.63. About £75.80 a year at the cap if the estimate above is right.

2.40 kWh per use. 288 kWh a year. Both are typical estimates.

At the cap, one use is £0.63. The live figure is this half-hour, not the cheapest window.

Cheapest time to run it

GB average Direct Debit cap, 1 October to 31 December 2026: electricity 26.32p/kWh and 54.83p/day, gas 7.97p/kWh and 29.68p/day. This is the Great Britain average for Direct Debit. Your region’s standing charge and unit rate can differ. Ofgem publishes the regional tables. Ofgem. No VAT on electricity from 1 October 2026 to 31 March 2027. The published gas figures include 5% VAT.

Not financial advice. Estimates are labelled. Check a quote or the scheme before you act.