The Best Dehumidifiers of 2026 for Basements, Mold and Drying Laundry

For a bedroom or bathroom, 21 to 25 pints a day is usually enough; for a basement, a large living room or drying laundry, aim for 42 pints or more. Capacities on European spec sheets are measured in warm, very humid conditions, often 86°F (30°C) and 80% humidity, so in a cooler room the unit pulls out much less. US ratings are measured under different, cooler conditions, so the two sets of figures aren't directly comparable. If you don't want to empty the bucket, plan for continuous drainage through a hose.

Go with a compressor model for a heated room and a desiccant one for a cold space, like a basement, a garage or a house that's barely heated in winter. Compressor units use less power, but their performance drops sharply below about 59°F (15°C). Desiccant models work well in the cold and blow out slightly warm air, at the cost of higher energy use. They're also lighter and often quieter.

Typically well under a dollar a day in normal use, more for a desiccant model. The math: a 250 W compressor unit running for 8 hours uses 2 kWh, about 40 cents at an example rate of 20 cents per kWh; a 600 W desiccant model uses 4.8 kWh over the same time, about 96 cents. With a humidistat, the unit shuts off as soon as it reaches the target humidity, which lowers the real cost. Check the rate on your utility bill.

No: it dries the air in the room, not the wall, and moisture wicking up from the ground will keep coming. Typical signs are stains low on the walls, white powdery deposits (efflorescence) and paint that bubbles or flakes. You'll need a professional diagnosis (drainage, resin injection, suitable coatings). In the meantime, a dehumidifier still helps limit condensation and musty odors.

Most often the room is too cold for a compressor model, or the air has already reached the humidity you set. Below about 59°F (15°C), a compressor unit can ice up and spend much of its time defrosting. Check the humidistat setting, vacuum the air intake filter and make sure the bucket float isn't stuck. If the fan runs in a warm, damp room and still nothing drips, the refrigerant circuit may be at fault: make a warranty claim.