Overview
- Friday coverage combined independent tests and official figures showing typical compressor dehumidifiers draw about 185–300 watts when running, which works out to roughly 4–8p per hour at current UK electricity rates.
- Keeping indoor relative humidity between 30% and 50% is the health goal recommended by the EPA because lower humidity reduces condensation and the risk of mould growth that can harm respiratory health.
- There are two main technologies: compressor units work best in warm living spaces above about 65°F, while desiccant models perform better in cold, unheated rooms such as garages and basements.
- Buyers should size units by daily extraction (20–25 pints for small rooms, 30–35 pints for medium spaces, 45–50 pints for very large areas), check decibel ratings for bedroom use, and prefer humidistats, auto modes and drainage options to save energy.
- Energy experts and MoneySavingExpert’s Martin Lewis highlight dehumidifiers as a lower‑cost way to dry indoor laundry compared with tumble dryers and recommend placing the unit near a clothes rack with doors closed to speed drying and cut bills.