Choosing the right size dehumidifier makes a huge difference. Too small and it will run constantly without fixing the problem. Too large and you waste money on capacity you do not need.
Best size for different homes
- Flats and small homes: ten to twelve litre models.
- Two or three bedroom houses: twelve to twenty litre models.
- Four bedroom homes or heavy moisture: twenty litre models.
- Cold rooms, garages or garden offices: choose a desiccant model.
Factors that affect the size you need
- Amount of condensation or mould present.
- Whether you dry clothes indoors.
- How cold the room gets.
- Room size and layout.
Quick rule of thumb
If you are unsure, a modern twenty litre model is the safest choice for most UK homes. They extract moisture quickly and cycle on and off to save energy when not needed.