10 Best Dehumidifiers for Crawl Spaces
for December 2022

Crawl space humidity levels are often overlooked by homeowners, but they can be an important factor when it comes to maintaining your home's structural integrity. Too much moisture can cause wood to swell, causing wood beams to sag, leading to cracked walls, and, in severe cases, even collapse.

Crawl space humidity levels can vary throughout the year, and, depending on the climate, the humidity levels may be higher or lower than in your home. Crawl space humidity levels can also change with seasons, as cool air moves in and warm air escapes. And, as temperatures drop in the fall and winter months, the humidity levels in your crawl space may drop, too.

Crawl space humidity levels fluctuate, too, depending on factors such as the amount of moisture in the air, your home's ventilation, and the type of insulation in your crawl space. The Different Guide has tested dozens of dehumidifiers over the years, evaluating them for performance, ease of use, and energy efficiency. Here are the best dehumidifiers for crawl spaces you can buy in 2022, according to testing and reviews.

Different Guide editors independently choose recommendations. Purchases made through our links may earn us commissions.

1
9.9
SCORE
ALORAIR 180PPD Commercial Dehumidifier for Crawl Space & Basement, Wi-Fi APP Controls with Pump, Capacity up to 85 PPD at AHAM Condition, for Large Space, Job Sites, Yellow

ALORAIR 180PPD Commercial Dehumidifier for Crawl Space & Basement

by ALORAIR
What We like

This monitoring dehumidifier is very effective during humid conditions. The dehumidifier will automatically shut off or adjust as needed. It stays cool, quiet and efficient. This is a must for anyone with humidity issues.

2
9.6
SCORE
BASEAIRE 198 Pints Energy Star Crawl Space Commercial Dehumidifier, 5 Years Warranty, Large Industrial Water Damage Equipment for Basement, Garage and Job Sites, AirWerx 90

BASEAIRE DRY YOUR CRAWL SPACE & BASEMENT BASEAIRE 198 Pints Energy Star Crawl Space Commercial Dehumidifier

What We like

This programmable dehumidifier works like a space-age fridge. Rather than having to be emptied and cleaned by manual means - which would inevitably require topping up the water - the unit uses its built-in sensors to detect and empty itself when the required level is reached.

3
9.2
SCORE
BASEAIRE Crawlspace Commercial Dehumidifier with Pump and Drain Hose, 120 Pints/Day (Saturation) 55 Pints/Day (AHAM) Humidity Control for up to 1,300 sq ft Basements, Energy Star Listed, Memory Starting, Water Damage Storage, 5 Years Warranty

BASEAIRE DRY YOUR CRAWL SPACE & BASEMENT BASEAIRE Crawlspace Commercial Dehumidifier with Pump and Drain Hose

What We like

This dehumidifier is ideal for basements that provide a space for storage. It has a large capacity and is so quiet that you won't even know it's running.

4
9.1
SCORE
ALORAIR 180 Pint Commercial Dehumidifier with Pump for Basement Warehouse & Job Sites, Large Space Crawl Space Dehumidifier for Efficient Water Damage Restoration,5 Years Warranty,Green

ALORAIR 180 Pint Commercial Dehumidifier with Pump for Basement Warehouse & Job Sites

What We like

This commercial dehumidifier is effective for basements, crawl spaces, and upholstery, and can be configured with an A/C outlet for continuous operation.

5
8.9
SCORE
ALORAIR Commercial Dehumidifier with Pump Drain Hose, 180 Pint Large Capacity Crawl Space Dehumidifier for Water Damage Restoration, Basements Warehouse & Job Sites, 5 Years Warranty, Red

ALORAIR Commercial Dehumidifier with Pump Drain Hose

by ALORAIR
What We like

This dehumidifier is larger than most of the rest of the winners. However, the greater capacity means it's able to deal with more moisture per hour, and the 5-year warranty means any repairs will be free over the long run.

6
8.6
SCORE
COLZER Crawlspace Commercial Dehumidifier with Pump and Drain Hose 145 Pints/Day (Saturation) 70 Pints/Day (AHAM) Humidity Control for up to 6,000 sq ft Basements, Water Damage Storage

COLZER Crawlspace Commercial Dehumidifier with Pump and Drain Hose 145 Pints/Day (Saturation) 70 Pints/Day (AHAM) Humidity Control for up to 6

by COLZER
What We like

With an ultra-wide horizontal air flow, the COLZER CD70P crawl space dehumidifier handles basements, storage, and crawl spaces up to 6,000 sq ft. This basement dehumidifier has an auto restart feature, plus automatic defrosting and a drain hose. The pump automatically drains the condensate to a handy drain hose.

7
8.4
SCORE
ALORAIR Sentinel HDi120 Commercial Dehumidifier with Pump, 235 Pints Whole Homes Dehumidifier for Crawl Spaces, Basements, up to 3,300 sq. ft. 5 Years Warranty, cETL, Optional Remote Monitoring

ALORAIR Sentinel HDi120 Commercial Dehumidifier with Pump

by ALORAIR
What We like

Our top pick protects large areas thanks to its ability to extract up to 235 pints of water per day. It has a long warranty, runs quietly, and is user-serviceable.

8
8.4
SCORE
ALORAIR Sentinel HDi100 Commercial Dehumidifier with Pump, 220 Pints Whole Homes Dehumidifier for Crawl Spaces, Basements, up to 2,900 sq. ft. 5 Years Warranty, cETL, Optional Remote Monitoring

ALORAIR Sentinel HDi100 Commercial Dehumidifier with Pump

by ALORAIR
What We like

With an air conditioner-like design and an Energy Star rating, this dehumidifier is perfect for a person or couple who already owns an air conditioning unit and want an efficient, low-cost option.

9
8.4
SCORE
BaseAire AirWerx55 Energy Star Dehumidifier for Crawl Space Basement, 120 Pints Commercial Dehumidifier with Continuous Drain Hose, 5 Years Warranty, Intelligent Humidity Control, Auto Shut off/Restart

BASEAIRE DRY YOUR CRAWL SPACE & BASEMENT BaseAire AirWerx55 Energy Star Dehumidifier for Crawl Space Basement

by BaseAire
What We like

This crawl space dehumidifier is the best at dehumidifying basements, and its dual moisture sensors allow you to set humidity levels more precisely. Its noncondensing design keeps water in the bucket, reducing condensate.

10
7.3
SCORE
ALORAIR 180 PPD Commercial Dehumidifier with Pump Drain Hose for Basement Warehouse & Job Sites, Large Capacity Crawl Space Dehumidifier for Water Damage Restoration, 5 Years Warranty, Yellow

ALORAIR 180 PPD Commercial Dehumidifier with Pump Drain Hose for Basement Warehouse & Job Sites

What We like

The Alorair works well for drying basement and crawl spaces, but the low capacity means it will take a long time to refill.

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