The Midea Cube MAD50PS1QWT is the best basement dehumidifier we'd buy. Independent testers rank it the most efficient and fastest-drying 50-pint unit, its built-in pump pushes water up and out for below-grade rooms, and its expandable Cube reservoir means you empty it far less often. It covers a large 4,500 sq ft and is Energy Star certified. The trade-off is noise on high and a bulky, heavy chassis, but for a basement that runs out of sight, it is the standout.
Full review
Real-World Performance
The Midea Cube earns its top ranking on raw drying performance. Dehumidifier Buyers Guide, which has hands-on tested more than 50 units, recorded the Cube lowering a sealed test room from 90% relative humidity down to 40% in 7 minutes and 39 seconds, calling it the best result of any 50-pint unit they have measured. HouseFresh's testing echoed that, watching it pull a room from 65% to 45% in about six minutes. For a damp basement, that speed means the unit reaches a safe humidity band quickly and then idles rather than grinding all day.
Its efficiency is just as notable. At 50% RH the Cube draws only about 512 watts, which testers flagged as the most efficient figure among 50-pint units they tried. Over a basement that runs the dehumidifier nearly around the clock through a humid season, that efficiency advantage translates into a meaningfully lower electric bill than a less efficient unit moving the same amount of water.
The Cube Design
The Cube's defining trick is its lift-and-twist body. The unit separates into two stacked halves: keep it nested for a compact footprint, or extend it to roughly double the height and unlock a far larger water reservoir. Midea rates the expanded bucket at over 4 gallons, around three times a conventional dehumidifier's tank, which is the single biggest convenience for anyone who drains to a bucket rather than a hose. You simply empty it far less often.
That design is also why reviewers single it out for people who cannot run a permanent drain. In a finished basement with no nearby floor drain, the oversized reservoir plus the auto-shutoff means the Cube can run unattended for long stretches without overflowing. It is a genuinely different ergonomic experience from the flat-box dehumidifiers it competes against, and it is the reason HouseFresh named it the best pick for no-drain situations.
Drainage and the Pump
For a basement, the built-in pump is the feature that matters most. Many basements sit below the nearest sink or drain, which makes a gravity hose useless because water will not flow uphill. The Cube's pump solves that by pushing condensate vertically out a window or up into a utility sink through the included 16-foot hose, so you can set it and forget it even in a below-grade room. It is the same capability that makes the GE APER50LZ a basement favorite, but paired here with the oversized reservoir as a fallback.
You therefore get three drainage modes in one unit: the expandable bucket for occasional or no-drain use, a standard gravity hose where a drain sits below the unit, and the powered pump for everywhere else. That flexibility is exactly what a basement buyer wants, because basements vary enormously in where the nearest drain happens to be.
Smart Features
The Cube connects to Midea's SmartHome app over Wi-Fi and works with both Alexa and Google Assistant. From the app you can set a target humidity, schedule operation, and get a full-bucket alert on your phone, which is genuinely useful when the unit lives in a basement you do not visit every day. Remote monitoring means you learn the bucket is full or the unit tripped without having to go check.
The connected features are a real convenience rather than a gimmick for a set-and-forget basement appliance. Being able to confirm the dehumidifier is holding your target humidity from upstairs, or shut it off remotely, is the kind of small daily benefit that justifies the smart hardware on a unit you otherwise rarely interact with in person.
Where It Falls Short
The Cube is not quiet on its high fan setting. Dehumidifier Buyers Guide measured about 66 dB at high speed, which is clearly audible and louder than the Honeywell TP50WKN in this roundup. In an unfinished basement that is a non-issue, but if your basement doubles as a bedroom, home gym, or office, you will hear it, and you may want to run it on a lower speed or choose a quieter unit.
The other costs are physical and financial. The Cube is bulky and heavy at over 40 pounds, so moving it between floors is a chore, and it carries a premium price over a plain 50-pint box. The warranty is a standard one year. None of these undercut its performance lead, but they are the honest trade-offs for the design and the pump.
Who It's Best For
Buy the Midea Cube if you have a large or below-grade basement and you want the most capable unit available: fastest drying, best efficiency, a pump to lift water out, and a reservoir you rarely have to empty. It is the right choice for a basement that runs the dehumidifier nearly continuously through a humid season, where its efficiency edge and drainage flexibility pay off over time.
Look at the quieter Honeywell TP50WKN instead if your basement is also a living space and noise on high would bother you, or at the cheaper Waykar 34-pint if your basement is smaller and you do not need 4,500 sq ft of coverage. For the classic damp, large basement, though, the Cube is the unit to beat.
Value at This Price
The Cube carries a premium over a basic 50-pint box, but the value case is strong for a basement that runs the unit hard. A dehumidifier's lifetime cost is dominated by electricity, and the Cube's class-leading 512-watt draw at 50% RH means it moves more water per kilowatt-hour than its rivals. Over a humid season of near-continuous operation, that efficiency edge narrows and eventually overtakes the higher purchase price compared with a cheaper, hungrier unit.
You are also paying for capability that genuinely saves effort: the pump for upward drainage, the expandable reservoir that cuts emptying trips, and the largest coverage in this roundup. For a buyer who wants one unit to handle a big basement for years, the Cube's price buys the most capable and the cheapest-to-run package here, which is why it tops the independent test rankings.
Strengths
- +Rated the best-tested 50-pint dehumidifier by Dehumidifier Buyers Guide and the most efficient at 512 watts
- +Lift-and-twist Cube design holds up to 3x the water of a normal bucket, so far fewer trips to the drain
- +Built-in pump drains vertically out a window or up to a sink, ideal for below-grade basements
- +Covers up to 4,500 sq ft, the largest in this roundup, and Energy Star certified
- +Wi-Fi with SmartHome app plus Alexa and Google Assistant control
Watch-outs
- −On its high fan speed it is loud, measured around 66 dB
- −The Cube footprint is bulky and the unit is heavy at over 40 lbs
- −Premium price versus a basic 50-pint unit
- −Only a 1-year warranty
How it compares
The largest-coverage and most efficient unit here, beating the Frigidaire Gallery FGAC5044W1 on capacity and the Waykar 34-pint on raw drying power. Its pump matches the GE APER50LZ for below-grade drainage, but the Cube empties far less often thanks to its expandable reservoir; the Honeywell TP50WKN is quieter but covers less area.
Who this is for
At a glance: Large or below-grade basements where you want the most efficient, fastest-drying unit with a pump to lift water out and a reservoir you rarely have to empty.
Why you’d buy the Midea Cube MAD50PS1QWT 50-Pint Dehumidifier with Pump
- Rated the best-tested 50-pint dehumidifier by Dehumidifier Buyers Guide and the most efficient at 512 watts.
- Lift-and-twist Cube design holds up to 3x the water of a normal bucket, so far fewer trips to the drain.
- Built-in pump drains vertically out a window or up to a sink, ideal for below-grade basements.
Why you’d skip it
- On its high fan speed it is loud, measured around 66 dB.
- The Cube footprint is bulky and the unit is heavy at over 40 lbs.
- Premium price versus a basic 50-pint unit.
Rating sources
“A dehumidifier's job is to dehumidify and the Midea Cube simply dehumidifies faster and more efficiently than any other 50 pint dehumidifier we've tested”
“The best home dehumidifier for those who can't use an external drain which has plenty of design features that make it an easy device to live with.”
“Built-in pump enables continuous drainage out of a window or into a sink, with up to 3X larger water tank to operate 3X longer than a conventional dehumidifier.”
Our 4.7 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
