The quietest small dehumidifier we found, with a tank triple the usual.

Midea Cube 20-Pint Smart Dehumidifier (MAD20S1QWT)

Midea

The best pick for a bedroom or small room: independently the quietest and most efficient 20-pint tested, with a 3.2-gallon tank that shames its class. It won't dry a wet basement and isn't truly silent — but for a room you sleep in, nothing compressor-based comes closer.

A 20-pint dehumidifier is right-sized for a bedroom, a small apartment, or an office — spaces up to about 1,500 sq ft that are damp rather than wet. The Cube 20 wins that bracket on the two things that matter in a room you occupy: noise and running cost. DehumidifierBuyersGuide measured it as the quietest 20-pint it has tested and the lowest-draw, and it carries ENERGY STAR Most Efficient. It also solves the small-unit annoyance of a tiny tank. Where most compact dehumidifiers make you empty a half-gallon bucket twice a day, the Cube's collapsible reservoir holds about 3.2 gallons, so it can go a full day or more between empties — or run continuously through the included hose. Wi-Fi, a humidistat, and Alexa round it out. The limits are honest ones. It's the quietest in its class, not silent — around 59 dB at its measured loudest, so a genuinely silent closet unit like the Pro Breeze still beats it for a nightstand whisper. And 20 pints won't touch a properly wet basement; that's a job for the 50-pint Cube or the Frigidaire.

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Last reviewed Jul 11, 2026

What we like

• ✓Independently measured as the quietest and most efficient 20-pint in its class.
• ✓A ~3.2-gallon collapsible tank, roughly triple the usual compact bucket — far fewer empties.
• ✓Wi-Fi, humidistat, and Alexa control, plus a stackable cube shape that stores flat.
• ✓Low running cost: ENERGY STAR Most Efficient, the lowest draw in its bracket.

Trade-offs

• −Quietest in class isn't silent — ~59 dB at its loudest; a Peltier mini is quieter for a closet.
• −20 pints is for damp rooms, not a wet basement.
• −The built-in pump is only on some SKUs — check before you buy if you need it.
• −One-year warranty, and the same fiddly Midea Air app.