Best Dehumidifier for Crawl Space in 2020

Best Dehumidifier For Crawl Space

Dehumidifiers work by eradicating excess moisture from spaces they are installed in. the crawl space or cellar in your home is often prone to humidity and mold which can cause damage to your space as well as possessions kept there. As per a recent study, about 40% of air on the first floor of your house originates from the crawl space. Imagine this air being damp and humid, it will damage the air quality of the entire house while creating health issues.
The Aprilaire 1820 Pro Crawlspace Dehumidifier is an efficient humidifier that removes all the excess moisture and mold from your crawl space while keeping the air quality of the home healthy. We have picked this dehumidifier after reviewing other good options available in the market. This article will give you a step-by-step guide to explore all the features of this Aprilaire 1820 Pro Crawlspace Dehumidifier and its advantage over other dehumidifiers in the market.

Best Dehumidifier for Crawl Space

Rank Name Ratings Price Capacity Designed for Area Auto Restart Discount Link

Aprilaire 1820 Pro Crawlspace Dehumidifier

4.4/5 $ 70 PPD 2800 sq. ft

AlorAir Basement/Crawl Space Dehumidifier

4.3/5 877 55-120 PPD 1300 sq. ft

AlorAir LGR Compact Dehumidifier with Built-in Pump

4.3/5 899.99 85-190 PPD 2300 sq.ft

Dri-Eaz Revolution LGR Commercial Dehumidifier

3.8/5 1892.49 80 PPD 7000 sq. ft

Dri-Eaz PHD 200 Commercial Dehumidifier with Pump

3.3/5 1015 75 PPD 1100 sq. ft

No.1 Aprilaire 1820 Pro Crawlspace Dehumidifier


  • Durable and compact
  • Easy installation
  • Automatic restart on sensing humidity
  • Corrosion-resistant aluminum coils
  • Low-maintenance
  • Digital control panel


  • Warranty issues

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April 1820 is a user-friendly dehumidifier that removes up to 70 pint (9 gallons) of water daily. The compact design ensures that the device can be installed even in snug fit areas and the control panel can be installed on the top or on the side, depending upon the usability preference. The appliance is long-lasting with its corrosion-resistant aluminum coils and its automatic dehumidification controls restart the unit when the moisture exceeds the normal levels.

The setup is quick and simple- just place the dehumidifier over a drain, or fix the hose, level and plug it, set the humidity level in the interactive control display and you are done. Moreover, the unit is lightweight at 56 pounds and can be easily moved and positioned during installation. Once installed, the unit controls and prevents the basement humidity, mold, termites, wood rot, mildew, and protects the carpeting, furnishings, and other items kept in the crawl space.

The unit is low maintenance with filter cleaning/replacement required once a year and no dirty trays to be cleaned. This robust and well-built machine is manufactured in the U.S.A. by Aprilaire which constantly strives to improve the features, built, packaging, and performance of its devices.

Once you buy this Aprilaire appliance, you can enjoy peace of mind as these devices are developed through quality manufacturing processes to prevent leaks and have sound packaging for damage-free shipment. The 5-year warranty is a bonus. The Aprilaire 1820 Dehumidifier is compatible with 110V AC to 120V AC single phase 60 Hz power sources.

No.2 AlorAir Basement/Crawl Space Dehumidifier


  • Hot gas valve defrosting system
  • Efficient defrosting and low temperature operational
  • Epoxy coated
  • Energy saving
  • Corrosion protection technology


  • Functionality issues
  • Remote has to be purchased separately

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The AlorAir Basement/Crawl Space Dehumidifier is designed keeping in mind the modern-day consumer who wants to own a hassle-free machine. The device is equipped with the HGV- Hot gas valve

Defrosting System which enables it to work efficiently and continuously at low temperatures without halting during the defrosting process. This is a time and energy-saving mechanism which also increases the lifespan of the unit and is ideal for basements, offices, warehouses, factories storage areas, apartments, shops, and more.

The epoxy coating on coils minimizes corrosion and Freon leakage, thus maintaining the coil’s heat transfer ability throughout the longevity of the coils. The device is low maintenance with features like C-ETL, remote control system (remote not included in the package), Water Full Protection, Environmental R410A Refrigerant, and an Automatic Humidistat Control. The device has a G3 Filter which removes maximum odor and dampness and a continuous drain hose so that you do not have to remove water every hour. The compact and soundless device is a perfect choice for small spaces and sound insulation.

No.3 AlorAir LGR Compact Dehumidifier with Built-in Pump


  • Compact
  • Energy saving
  • Waterproof
  • Memory option
  • Ridged handle for transport


  • Some units have manufacturing defects
  • Some units are not long-lasting
  • Unresponsive customer service

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AlorAir LGR is a water damage restoration dehumidifier operates in the temperature range of 33-105 degrees F and has a digital humidistat control and timer. Designed for commercial and industrial purposes, this appliance can also be installed in basements and crawl spaces. This waterproof unit is designed for flood and water damage restoration and can be immersed in water without being damaged as the rubber strip seals the circuit board. The stackable design makes it compact and allows more space for more machines to be transported for flood restoration tasks.

The AlorAir LGR has a 106 ft long three-prong power cord which along with the condensate hose can be stored on the side of the appliance. The default running time of the machine is 12 hours and comes with a 5-year warranty. The epoxy-coated coils ensure optimum heat transfer ability throughout the life of the coils and the “hot gas” defrosting system clears the ice quickly so that the unit functions uninterrupted. The touch button control panel with LED display is easy to operate and the drainage is convenient with the 20’ lifting distance condensate pump.

No.4 Dri-Eaz Revolution LGR Commercial Dehumidifier


  • Compact
  • Easy to transport
  • Built-in humidistat
  • Lifetime warranty on polyethylene housing
  • Easy to clean and maintain


  • Loud
  • Some units are bad at water disposal
  • expensive

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The Dri-Eaz Revolution LGR Commercial Dehumidifier is a 65-pound appliance designed to dehumidify areas up to 7000 sq. Ft. This compact machine fits in small spaces like stairwells and bathrooms and can be stacked and transported for space-saving. The Dri-Eaz Revolution LGR Commercial Dehumidifier is a commercial-grade machine pulls as much as 17 gallons a day to dry water-saturated areas quickly. It works as competently as high-performance dehumidifiers to dry carpets, floors, walls and structural materials till they are completely dry.

It can effectively remove water from tight spaces like bathrooms and kitchens and also helps to prevent mildew, mold, and allergens. The appliance drains easily into the floor drain or any nearby outlet while cleaning dense materials in damp areas.

Dri-Eaz revolution features Dri-Eaz’s legendary rugged rotomolded housing and made-in-USA construction which ensures durability and longevity. This machine removes different quantities of water within an operating temperature range of 33F – 100F, depending upon the environmental conditions.

No.5 Dri-Eaz PHD 200 Commercial Dehumidifier with Pump


  • Easy to read digital controls in dim light
  • Compact
  • Automatic pump out


  • Breaks down fast

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The Dri-Eaz PHD 200 is a commercial-grade dehumidifier that draws excess moisture from shops, garages, basements, crawl spaces, and unfinished spaces. The 63 pounds machine is small, compact and can be hanged for space-saving. The automatic pump-out feature ensures continuous drainage of water with no hassle of emptying trays or water tanks, and the built-in humidistat can be used to set a target humidity level.

The digital controls are easy to maneuver and are available in 6 different languages. You can run the device in either humidistat mode or continuous mode depending upon the humidity conditions in the atmosphere. The recessed feet allow you to easily stack up to three dehumidifiers and transport them easily. The condensate pump lifts out moisture up to three feet and drains it out through the 20-feet long hose. The mesh air filter captures all harmful particles.

What to Consider When Choosing a Dehumidifier for Crawl Space

High-performance machine
A basement and crawl space dehumidifier should be effective in removing the humidity and prevent allergens, mold, and musty smell in crawl spaces. With controlled humidity, you can protect your carpeting, furnishings, valuables, and other stored items from warpage, damage, and rot. Therefore, the dehumidifier should function efficiently to remove optimum level of humidity and keep the space dry and clean. A device with automatic defrost is always a preference.

Desired humidity level
A dehumidifier functioning in the crawl space area should be equipped with the provision to change the humidity level as per the environmental conditions. Also, the machine should be able to measure the humidity of the outside air to the current setting of the humidity level. If the humidity outside is higher than the current settings the device can start the dehumidification process automatically.

Compact and handy
A compact machine is a boon in modern-day living where spaces are an issue. Crawl spaces, basements, and storage areas are usually small and your dehumidifier should be compact and handy enough to be shifted, maneuvered easily, and stacked if needed. If you want to shift or transport your crawl space dehumidifier, it should be handy enough to be stacked and carried easily in transportation.

Since purchasing a dehumidifier involves a cost they should be durable and long-lasting. Dehumidifiers with corrosion-resistant aluminum coils, leak proofing and strong outer bodies will last a long time. ?Also, since they are kept in spaces where humidity levels are high, they should be sturdy to withstand the moisture and humid environmental conditions.

Proper water drainage
As a dehumidifier removes large quantities of moisture uninterruptedly; it should have adequate drainage facilities. Place your dehumidifier or the hose near the drain and all the water will flow into the outlet without causing any hassle of emptying the water tray. The dehumidifiers should have no leakage issues or will create a problem of dirty water puddles below the machine and need for frequent servicing.

Low maintenance and easy operation
A dehumidifier with low maintenance is well-suited for modern-day living where people do not want the hassle of everyday servicing of appliances. Select a dehumidifier with an interactive control panel that clearly shows all readings and is easy to use. The humidity level, the one/off button, and the other settings should be displayed clearly and prominently. Just a glance at the control panel and you are aware of all settings in the machine. The installation and setup should be easy and a lightweight dehumidifier is preferable as it can be shifted manually when needed. The air filter should be easy to clean.


So we have a clear winner. The Aprilaire 1820 Pro Crawlspace Dehumidifier emerges on top based on all the above parameters. It is a sturdy, durable, efficient and compact machine that effectively draws out moisture from your crawl spaces. It also prevents the formation of mold, mildew, allergens and bad odor in the storage space. It is also backed up by a 5-year warranty and is manufactured by Aprilaire that is known for delivering quality dehumidifiers that are long-lasting and value for money.

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