The 3 Best Crawl Space Dehumidifiers Reviews (Stop Mold, Mildew, and Bacteria Growth)


You have taken care of all parts of the house, inside and outside. But there is a space underneath the floors or roof that is not always in your view like the crawl space. Your crawl space is as important as all other areas. Is it becoming a breeding ground for molds and mildews? This is our roundup of the best crawl space dehumidifiers’ reviews post to help you bring down moisture to proper levels.

​Crawl spaces tend to higher humidity that causes problems, not only concerning health but also could affect the structure of your home especially those houses built using woods. Also, high moisture can also damage your home items like wooden wall panels and planks as well as wallpapers.

When Crawl Space Moisture Is Too High


Depending on the type of crawl space you have, the constant high moisture encourages the growth of molds and mildews. In some instances, water leaks and pools of water becomes a breeding ground for insects, which may somehow find its way into your home.

​High moisture also damages wood and corrode metal such as ceiling materials. If moisture went uncontrolled, you could see your home ceiling start to have yellowish stain too.

​Different factors could affect the humidity levels. Because crawl spaces are areas, you tend to ignore, there might be undetected leaks. Improper ventilation is another factor that affects humidity.

​If you have constantly forget about your crawl space, then it's very likely that place will have little or no maintenance at all.

​In summary, when moisture levels in crawl spaces are high, molds and mildew grow; which eventually causes health problems and unhealthy air. At the same time, poorly designed ventilation and the lack of maintenance leads to deterioration of the structure too.

Moisture and Air

Especially for the home that has little children like baby and toddler, it’s important to make sure that the air around home stays fresh and healthy for them. When moisture is high, you will tend to get this musty smell linger around the air. It can be hard and uncomfortable to breathe, especially for the young ones.

Considerations When Choosing the Best Crawl Space Dehumidifiers


Let’s begin with the functionality. Crawl space dehumidifiers need to work as intended, and that is to remove moisture from the air. Unlike other areas of the house, such as living spaces and bedrooms, they need to work in tight spaces. If you are looking for dehumidifiers for areas other than crawl spaces, check out the post on the best portable dehumidifiers for your family.

Because of the tight space, perhaps even accessibility of crawl spaces, it is important that the unit has a drainage system. It can be a nuisance if you have to clear the unit reservoir regularly, especially in a tight space where movement is not convenience. A pipe should connect the dehumidifier and automatically draw out the water to the drain.

For the same reasons why drainage is important, the dehumidifiers must have auto-humidistats that can adjust performance as necessary automatically. In other words, it should run on its own with minimal intervention from your part.

Crawl space dehumidifiers hence Energy Star (low energy consumption) rated units are preferable. Other considerations may include air filtration system and defrost system.

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Best Crawl Space Dehumidifiers

When moisture levels are high, you need to bring it down, and you can do this with dehumidifiers. Some of the best whole house dehumidifiers are also suitable as crawl space dehumidifiers.

However, on this post, we find the units designed for crawl spaces and based on net customer satisfaction, present you with these top choices.

Thermastor Santa Fe Compact 2 Crawl Space Dehumidifier

Don’t let the small size fool you. It may be ‘compact', but it does pack a punch. This monster can suck up to 70 pints of moisture per day over an area of 1,800 square feet. The Sante Fe Compact 2 works even in temperatures as low as 49 degrees Fahrenheit and is ideal for tight spaces.

Santa Fe Compact 2 uses a drainage hose to drain water, which means you don’t have to worry about emptying a bucket.

Electricity bill can be costly if not recognized by Energy Star. This unit is, and consumes only 1 kilowatt-hour every 4 pints of water.

Besides being used as a crawl space dehumidifier, it's also excellent as a whole house dehumidifier. Sante Fe is indeed one of the best crawl space dehumidifier’s brands in the market right now.

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EIPL (Ebac) CD85 Dehumidifier

The CD85 is constructed for heavy-duty use with a steel frame and body. It removes up to 56 pints of water per day that are pumped away by a condensate pump. The operation is as easy as setting the adjustable humidity level and lets it do its thing on its own.

EIPL has a unique ‘Hot Gas’ defrosting feature, which melts frost automatically. This allows the CD85 to operate efficiently even at low temperatures.

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Dri-Eaz F515 PHD 200 Compact Dehumidifier

Marketed as a commercial-grade dehumidifier, Dri-Eaz’ F515 PHD200 is capable of removing 75 pints of moisture per day. Under an extremely wet condition, the unit can remove up to an astonishing 134 pints per day.

It offers two modes of operation. First one allows you to set the humidity level and the unit will keep the space to that level. The second mode lets you continuously dehumidify regardless of humidity level.

Dri-Eaz F515 PHP200 has a highly efficient condensate pump that lifts water up to 3 feet and drains through a 20-feet long hose.

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A Note on This Crawl Space Dehumidifiers Reviews

One of the challenges of choosing an ideal unit is the moisture removal rate and total coverage area. At best, you can only make an estimate of your needs.Having said that, the three units featured above are among the best crawl space dehumidifiers you can find. But that does not mean you are limited to only three choices.

The manufacturers of each of the three units will have other models that may be better suited to your needs. Because crawl spaces vary, so too are the units that work best. For that reason, this post is meant to be a starting point.

So as long as the three units can fit your water removal rate and coverage space requirements, they will work well for you.

Whole House Dehumidifiers

As mentioned earlier, some whole house dehumidifiers work as crawl space dehumidifiers too. Click here to check out the one of the best whole house dehumidifiers manufactured by Aprilaire.

Besides dehumidifying, if you have to deal with moisture levels that are below 40%, then you will want to take a look at our posts on home humidification systems.

We have vetted through hundreds of humidifiers products and only pick the best for you. Click here to see the best humidifiers for your family, and here for the best furnace humidifiers.


We hope that this review has help you to decide which is the best crawl space dehumidifiers you should purchase for your home. If you think we left out any good crawl space dehumidifier, do let us know by commenting below.

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