Dehumidifier Calculator

Choosing the right dehumidifier size depends on the size of the room and the level of moisture present.

As a general guide, smaller spaces such as bedrooms, home offices, or bathrooms may only require a 10-12 litre model.

Medium-sized rooms and typical living areas are better suited to a 13-20 litre unit.

Larger open-plan spaces, conservatories, basements, or particularly damp environments will benefit from a 20-25 litre dehumidifier for faster and more effective moisture removal.

If you regularly notice condensation on windows, musty odours, damp patches, or struggle to dry laundry indoors, it may be worth choosing a larger capacity model to ensure optimal performance and lower running times. Always consider both the room size and moisture levels when selecting a dehumidifier, as a correctly sized unit will be more efficient, effective, and economical to run.