Dehumidifier size calculator

Dehumidifier ratings changed in 2019 and the old and new pint numbers don't mean the same thing — a lot of buying advice is silently wrong because of it. This sizes your space with the official Energy Star table and translates old ratings honestly. Sources on the methodology page.

Sizing from the published Energy Star guidance. Persistent moisture has a source — a dehumidifier manages the symptom while drainage, grading, or sealing fixes the cause. Our French drain calculator covers the outside half of that fight.