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Dehumidifiers, sump pumps, leak detectors, shutoff valves, moisture meters and air movers, scored against a published rubric from verified specs. The rating is ours; the reviews on Amazon are a click away.

9 pagesDehumidifiers Sump Pumps & Backups Leak Detection & Shutoff Moisture Testing Drying & Restoration

Dehumidifiers

Basement, crawl space and whole-home units, sized correctly.

Buying guide
The best dehumidifier for a basement
For most basements, buy a 50-pint (DOE 2019) portable and run it on a hose to a floor drain; the Midea Cube 50 is our pick because its 4-gallon bucket and app make it the easiest to live with. If the only drain is uphill, buy the Frigidaire FHDP5033Y1 with its built-in pump. If you want a conventional box with a published spec sheet, the Frigidaire FHDD5033Y1; if the basement is small and only musty, the 20-pint Cube.
Top pick: Midea Cube 50-Pint (MAD50S1QWT)
4.0 · 8.2/10
13 min readUpdated October 30, 2026
Buying guide
The best crawl space dehumidifiers
For most sealed crawl spaces, buy the Santa Fe Compact70: 70 pints a day at 80°F/60%, a 12-inch-tall cabinet, a MERV-13 filter and a 6-year warranty. If the space runs cold or you need a pump in the box, the AlorAir Sentinel HDi90 is the value pick; if you want to duct it or run a wall control upstairs, the AprilAire E080 is the upgrade.
Top pick: Santa Fe Compact70
4.0 · 7.8/10
16 min readUpdated October 30, 2026

Sump Pumps & Backups

Primary pumps, battery and water-powered backups, alarms.

Buying guide
The best water-powered backup sump pumps
If you are on municipal water with 60 psi or better, the Zoeller Home Guard Max 503 moves the most water of any water-powered backup we could document: 1,140 GPH at 10 ft, with no battery to die. Buy the Liberty SumpJet SJ10A if your pressure is low, and the Basepump RB750-EZ if you want the backflow preventer, alarm and a 5-year warranty in one box.
Top pick: Zoeller Home Guard Max 503
3.5 · 7.2/10
8 min readUpdated October 30, 2026
Buying guide
The best sump pumps
For most basements, buy the Zoeller M53 Mighty-Mate: a cast iron 3/10 HP pump that moves 2,040 GPH at 10 ft and outlives everything else we pull out of pits. Buy the Wayne CDU980E if you want more than twice the flow and a 5-year warranty for similar money, the Wayne CDU1000 for a pit that fills fast, and the Liberty 257 for a narrow pit.
Top pick: Zoeller M53 Mighty-Mate
4.5 · 8.9/10
10 min readUpdated October 30, 2026
Buying guide
The best battery backup sump pumps
For most homes, buy the Basement Watchdog Big Dog CONNECT: 2,200 GPH at 10 ft, a 20 A charger that refills the battery between storms, and a weekly self-test. Buy the Special CONNECT if the budget is tight, the Zoeller Aquanot Fit 508 ProPak if you are replacing the primary pump too, and the PumpSpy PS2000 if you want your phone to know before the carpet does.
Top pick: Basement Watchdog Big Dog CONNECT
4.0 · 7.8/10
14 min readUpdated October 30, 2026

Leak Detection & Shutoff

Smart sensors and automatic shutoff valves that stop floods early.

Buying guide
The best water leak detectors
Buy the YoLink starter kit if your risk points are in a crawl space, sump pit or outbuilding, or you plan to add automatic shutoff later. Buy the GoveeLife 1s kit for the most coverage per dollar with a loud siren. Buy Moen's Smart Water Detector if you want no hub and temperature and humidity alerts, and Eve Water Guard if you run Apple Home and want one long sensing cable along a basement wall.
Top pick: YoLink Water Leak Starter Kit (Hub + 3 Water Leak Sensor 1)
4.0 · 7.8/10
9 min readUpdated October 30, 2026
Buying guide
The best smart water shutoff valves
Buy the Moen Flo if you want the whole-house shutoff insurers recognize most and a sensor ecosystem behind it; buy Phyn Plus if you want pressure-based micro-leak testing and a two-year warranty with no subscription. If you cannot cut the main, Flume 2 gives you flow alerts off the meter in ten minutes, and the YoLink kit closes an existing ball valve from battery-powered sensors for a fraction of the cost.
Top pick: Moen Flo Smart Water Monitor and Shutoff (3/4 in, 900-001)
4.0 · 8.3/10
11 min readUpdated October 30, 2026

Moisture Testing

Meters, hygrometers, thermal cameras and mold tests.

Buying guide
The best moisture meters for leaks, walls and floors
The Protimeter SurveyMaster is the meter we would buy if we could own only one: pin and pinless in one body, a calibration check in the box, and readings adjusters accept. If you need an answer today for the price of a pizza, the General Tools MMD4E is accurate enough to tell you whether to open the wall.
Top pick: Protimeter SurveyMaster BLD5365 Dual-Function Moisture Meter
4.5 · 8.5/10
11 min readUpdated October 30, 2026

Drying & Restoration

Air movers, LGR dehumidifiers, pumps and scrubbers pros actually use.

Buying guide
The best air movers for drying wet floors and walls
For most homes the Dri-Eaz Velo Pro is the air mover to buy: 885 CFM, an adjustable 1.2–1.9 A draw and five positions, so several run on one circuit. The XPOWER P-230AT does three-quarters of the job for a third of the price, and if the wet area is a whole basement you should rent, not buy.
Top pick: Dri-Eaz Velo Pro Low Profile Air Mover
4.5 · 8.6/10
11 min readUpdated October 30, 2026

Best gear, ranked

Need help? Request a local contractor

Request saved

Dehumidifiers

The best dehumidifier for a basement

The best crawl space dehumidifiers

Sump Pumps & Backups

The best water-powered backup sump pumps

The best sump pumps

The best battery backup sump pumps

Leak Detection & Shutoff

The best water leak detectors

The best smart water shutoff valves

Moisture Testing

The best moisture meters for leaks, walls and floors

Drying & Restoration

The best air movers for drying wet floors and walls

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