Wonder what is the best crawl space dehumidifiers on the market?
Crawl space dehumidifiers are compact and rugged enough to be installed in a crawl space for constant use.
In this product review guide, I will go over...
- My #1 top pick for the best crawl space dehumidifier
- Reviews of the best dehumidifiers with their pros and cons
- Tips on buying the best units
Let's get started with this guide!
My Overall #1 Rated Pick
- Remove up to 12-gallons a day
- Rust resistant coils
- Connect to HVAC or direct vent
- Rated for homes up to 5,200-sf
- Great for crawl spaces
My overall top pick for the best dehumidifier for crawl spaces goes to the AprilAire 1850. It is rated for homes up to 5,200-sf and is great to install in basements, crawl spaces, or garages. It includes corrosion resistant coils to help prevent freon leaks and damage.
| Image | Product | |||
|---|---|---|---|---|
Top Pick  | Top Pick | AprilAire 1850
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| View on Amazon |
 | AlorAir Sentinel
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| View on Amazon | |
 | AprilAire 1820
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| View on Amazon | |
 | BaseAire AirWerx55
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| View on Amazon | |
Most Portable  | Most Portable | Dri-Eaz F413
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| View on Amazon |
Top 5 Best Crawl Space Dehumidifiers
My top picks for the best crawl space dehumidifiers are compact and rugged enough for any crawl space. The best dehumidifiers for crawl spaces can remove anywhere from 7-15 gallons of water per day to keep your crawl space dry and prevent mold growth. These are the best crawl space dehumidifier that automatically control humidity and will drain water through a drain hose — keeping your crawl space dry and free from mold.
- AprilAire 1850 Pro (Top Pick)
- AlorAir Sentinel HD55
- AprilAire 1820
- BaseAire AirWerx55
- Dri-Eaz F413 (Most Portable)
What Is A Crawl Space Dehumidifier?
A crawl space dehumidifier is a device that will automatically control humidity levels in the crawl space. Besides crawlspaces, it can also be installed in garages, basements, or other areas where dehumidification is desired.
The dehumidifier may lay flat on your crawl space floor, but many homeowners like to keep them off the ground and hung by the floor joists.
These rugged dehumidifiers are designed to be continuously operated without any input from the homeowner. The unit is connected to a drain hose, and it will automatically drain the water to the outside or to a drain.
You will be able to set your desired humidity level on the control panel of the unit, and the dehumidifier will automatically turn on & off to reach that target. Some humidifiers can also be connected to a remote control so you don't have to go the crawl space to adjust the humidity.
Read Also: How To Get Rid of Mold in Basements?
Why Use A Dehumidifier for Crawl Spaces?
One of the biggest reasons to use a dehumidifier for your crawl space is to prevent hidden mold growth. Going into a crawl space isn't something that anybody wants to do, and mold can easily grow in this dark and humid area.
I can't even tell you how many crawlspaces I have inspected where there were signs of mold. It can have a black appearance, but sometimes I also discover white mold growth on the floor joists.
If there is mold in your crawl space, it can release hazardous mold spores into the rest of the home because no house is perfectly sealed from the crawl space.
I also recommend homeowners with crawl spaces to install a fully sealed vapor retarder on the crawl space floor and walls to help reduce moisture.
In addition to the prevention of mold, it can also help protect your home.
Finding wood rot is a common thing amongst home inspectors, and crawl spaces are definitely in the danger zone. This is because it isn't a conditioned space, so humidity and heat can build up in the crawl space, which can lead to wood fungus and rot.
And lastly, keeping your crawl space dehumidified can lead to more comfortable living conditions. This is because the crawl space is not perfectly sealed from the rest of the home, so if you keep your crawl space dry, it will help keep the humidity down in the rest of the home.
Read Also: Should I Get A Mold Inspection When Buying?
What Is The Best Crawl Space Dehumidifiers?
My top picks for the best crawl space dehumidifiers are portable, durable, and can remove anywhere from 5 to 15 gallons of water in a single day. Check them my reviews of the top picks below...
My #1 top pick goes to the AprilAire 1850. It is a high quality dehumidifier that can be used in crawlspaces, basements, garages, attics, or even for your whole house.
It can remove a whopping 12-gallons of water each day — all without removing a drip tray or container.
The 1850 is made with rust-resistant aluminum coils, and it includes a washable filter.
You can connect this dehumidifier to your HVAC system, or connect it directly to living area vents.
This premium dehumidifier is rated for homes up to 5,200 square feet.
- Removes up to 12-gallons a day
- Rust resistant aluminum coils
- Rated for homes up to 5,200-sf
- Complaints of leaking
- Poor warranty/repair experience
The Sentinel HD55 by AlorAir is a rugged high quality whole house humidifier for a crawl space, basement, garage, or other area.
This dehumidifier is rated for rooms up to 1,300 square feet in size.
The Sentinel has a special epoxy coating that helps to minimize corrosion and maintain optimal dehumidification.
This unit comes with a HGV system which stands for hot gas valve defrosting and it can quickly defrost the coils (useful for cold temperature areas) so it can keep working without constantly stopping.
The Sentinel will remove up to 15-gallons of water each day.
- Removes up to 15-gallons a day
- Hot gas valve defrosting
- Rated for crawlspaces up to 1,300-sf
- Complaints of defrost not working
- Complaints of breakdowns
The AprilAire 1820 is a really nice dehumidifier for your crawlspace or basement.
This dehumidifier is rated for areas up to 2,800 square feet and it can remove up to 9-gallons of water in a day.
The 1820 is a premium dehumidifer and it was manufactured in the USA for a higher quality product.
The control panel is mounted on the front so it is accessible in almost any location.
You can use this dehumidifier to keep your crawlspace and even your entire home nice and dry.
- Removes up to 9-gallons a day
- Front control panel
- Rated for crawlspaces up to 2,800-sf
- Comes with drain tube
- Complaints of leaking
- Poor warranty/repair experience
The AirWerx55 by BaseAir is a great compact dehumidifier for crawl spaces, basements, or garages.
It will remove up to 7-gallons of water in a day, and has a coverage up to 1,300-sf.
The AirWerx55 is equipped with epoxy-coated coils to help prevent corrosion and freon leakage (a common problem in dehumidifiers).
This lightweight and compact dehumidifier can be easily installed in crawlspaces and an optional remote controller can be connected to the unit.
The AirWerx55 includes a MERV-8 filter to catch larger airborne particles to prevent contamination.
- Removes up to 7-gallons a day
- Optional remote control
- Rated for crawlspaces up to 1,300-sf
- Made in China
- Must install elevated
The F413 by Dri-Eaz is an ultra compact and portable dehumidifier that can be placed in your crawlspace, garage, or other tight area.
It will remove a high 12-gallons of water per day out of your ambient air.
The F413 includes a 4-stage filtration system to remove harmful particles like mold spores.
It also features automatic restart in case of a power outage so you don't have to go into your crawl space.
The housing is extremely durable because its rotomolded and it's made in the USA for quality.
The F413 includes a 40-ft drain hose to remove the condensate.
- Removes up to 15-gallons a day
- Ultra compact & portable
- Highly durable (rotomold)
- Automatic restart if power goes out
- Very pricey
My #1 Top Pick: AprilAire 1850 Pro
My top pick for the best crawl space dehumidifier goes to the AprilAire 1850. Here's why...
#1. Large Coverage
This dehumidifier can easily dry out your crawl space or basement, but it is also powerful enough to dehumidify your entire home. It is rated for up to 5,200-sf of coverage area.
#2. Corrosion Resistance
The coils in this AprilAire dehumidifer were designed to resist rust and corrosion which will help prevent freon leaks — one of the most common complaints among homeowners.
#3. High Capacity
The AprilAire 1850 can remove a large amount of moisture in a day—up to 12-gallons of water.
