At the current price cap rate of 26.11p per kWh, a typical dehumidifier costs about 62.7p per day, which is £228.10 a year on the usage below.
This one cycles. It switches on and off rather than running flat out, so multiplying its plate rating by the hours it is switched on overstates the cost, often by a factor of two or three. The figures here assume it draws full power for the time shown, which makes them a ceiling rather than a bill.
Where that number comes from
300 Wtypical power, range 150 to 700
8 hper day
7days a week, assumed
26.11pper kWh, cap average
Across the range of powers for this appliance class, one day costs between 31.3p and £1.46. Your own figure is on the rating plate, usually on the back or inside the door, and it is the only one that is true for you.
Cheaper than most people fear, and often cheaper than heating a room to dry it. Compressor models cycle; desiccant models draw more steadily.
What does it cost to run?
Change any of these. The rate is the current price cap average, but yours is on your bill and is the one that matters.
—per use
—per week
—per year
Every other appliance
See the full table at today's rate, or what the price cap is doing next.