Most modern dehumidifiers are far cheaper to run than people expect. In many homes, running one costs less than leaving several lights on.
Typical running costs
A standard compressor dehumidifier uses between two hundred and three hundred watts. This works out at around six to ten pence per hour at current UK electricity rates.
Why they seem cheaper in practice
- They cycle on and off once the room reaches the target humidity.
- Dry air heats up faster, reducing heating usage.
- Clothes dry quicker, meaning fewer tumble dryer cycles.
Desiccant models
Desiccant units use more electricity but produce warm air, which can offset heating costs in winter.
Overall, dehumidifiers are one of the most cost-effective appliances in a home with moisture problems.