What size dehumidifier do I need?

How dehumidifier sizing works

Dehumidifiers are sized in pints of water removed per day, based on room size and how damp the space is. A moderately damp 500 sq ft room needs about 10 pints/day; a wet basement of the same size can need 14–16. Add capacity for laundry, bathrooms, or lots of occupants. Note that DOE changed its test method in 2019, so modern pint ratings look lower than older ones for the same real-world performance.