5 Best Crawl Space Dehumidifier | Reviews + Guide

Have you recently come to know that the air in your crawl space is too moist? If yes, then it’s time to check out dehumidifiers. 

As you might have figured out already, the presence of moist air in your crawl space can wreak havoc on wood. Apart from giving rise to mold, the stuffy situation is perfect for inviting termites. 

Hence, it’s recommended to get a good dehumidifier that can fit in your crawl space and remove excess moisture. However, the sheer number of options available on the market often makes it challenging to choose the right one for your home. 

Don’t worry; we have your back. After checking out some great dehumidifiers, we have come up with nine recommendations that wouldn’t let you down. What’s more, there’s a handy buying guide to look for useful features in the best crawl space dehumidifier. 

So, without further ado, let’s jump into it! 

Best Crawl Space Dehumidifiers

Crawl space dehumidifier

Here is the list of the 5 best crawl space dehumidifiers to help you reduce the humidity levels in your home and keep it feeling comfortable and safe.

1. Honeywell Energy Star Dehumidifier – Best for Small Spaces

Do you want to increase the overall air quality of the crawl space of your house? If yes, this Honeywell dehumidifier is best for decreasing the humidity level of smaller areas. Its easy-to-use approach ensures that even a beginner can understand it right out of the box. 

Honeywell 23 Pint Energy Star Dehumidifier for Small Basements & Crawl...
  • Powerful Dehumidifier for Small Rooms: This...
  • Peace of Mind With a Brand You Trust: Honeywell...

Why Did We Like It?

When shopping for crawl space dehumidifiers, you’ll often come across units that look unappealing. But, that isn’t the case with this compact dehumidifier that’s meant for small spaces. Even after having a plastic body, all the parts are put together quite well to give it a seamless look. This unit also has wheels so that you can move it around the crawl space. 

Believe it or not, this tiny device can remove up to 20 pints of water a day without burning through much energy. Because of its efficiency, you would be able to feel a difference in the humidity levels quickly. 

However, the best feature of this dehumidifier is that there’s no need to change the filter. Just make sure to clean it under a running tap frequently for optimal operation.   

What Could’ve Been Better? 

One of the things to be aware of this crawl space dehumidifier is that it’s best for small areas and rooms. Hence, if you have a bigger house, think about getting multiple units or purchasing one with a larger area capacity. 

  • Lightweight design
  • Easy to maintain
  • Saves a lot of energy
  • Uncomplicated installation
  • Only good for small crawl spaces
Dimensions: 10.5″ x 13.2″ x 20.1″ | Weight: 14lbs | Capacity: 20 Pints | Air Flow Capacity: 118 CBM | Warranty: 5 Years

2. BaseAire Portable Commercial Dehumidifier – Best for Hot & Humid Climates

Those who live in hot and humid climates face trouble related to the growth of mold and mildew in their crawl spaces. This powerful dehumidifier from BaseAire comes with an enhanced airflow power of 120 CFM, and it quickly dries the area. So, let’s have a look at its features. 

BaseAire 113 Pint Commercial Dehumidifier with Drain Hose for Crawl...
  • 👍[Large-Capacity Dehumidifier, Highly Effective...
  • 👍[Professional, Smart, Easy to Use] - With the...

Why Did We Like It? 

One of the first things to note about this dehumidifier is a tube evaporator made of rare earth alloy. Along with extending the life of these coils, it also protects the heat transferability of the evaporator. And, this device does have the auto defrost function, which lets it run smoothly even on cold days. 

Moreover, this dehumidifier comes with the MERV-8 filter, which doesn’t allow dirt or other harmful particles to get inside the device. Yes, it does need to be changed every two to three months, but the process is relatively simple. 

Additionally, the device is fitted with a built-in humidity sensor that automatically registers the ambient temperature and relative humidity level of your crawl space to optimize its performance.  

What Could’ve Been Better? 

At 56.9 pounds, this dehumidifier is pretty hefty. Hence, you would need a bit of strength to get it into your crawl space. As it’s a commercial-grade dehumidifier, we would have preferred it to have been lighter for portability. 

  • Easy-to-use control panel
  • Simple self-installation
  • Gravity drainage works well
  • Replacing the filter is effortless
  • Heavy
Dimensions: 12.2″ x 19.2″ x 13.3″ | Weight: 44.9lbs | Capacity: 113 Pint | Air Flow Capacity: 120 CBM | Warranty: 5 Years

3. BASEAIRE AirWerx Crawl Spaces Dehumidifier – Best Multipurpose Dehumidifier

Your search for the best crawl space dehumidifiers may end with this unit from BASEAIRE that’s designed to be powerful. Along with being a convenient multipurpose device, its compact design lets you use it even in the narrowest spaces. Hence, let’s take a look at the features that make it a great dehumidifier. 

BaseAire 120 Pints Crawlspace Dehumidifier with Pump and Drain Hose...
  • 👍[120 Pint Dehumidifier] The best dehumidifiers...
  • 👍[Commercial-grade dehumidifier] BaseAire...

Why Did We Like It? 

Straight away, we were impressed by the simple design of this dehumidifier. Even the thermostat is placed in a region that would be clearly visible to you. And, the tactile buttons make controlling the device as easy as it can get. 

What’s more, this is an energy star-listed dehumidifier. So, even after running in your crawl space 24 x 7, it wouldn’t hike up the energy bill. Also, as it runs on electricity, there are no harmful greenhouse gas emissions. 

However, the most impressive thing about this humidifier has to be the 19.6-foot-long drainage pipe. This device also comes with a condensate pump, so there won’t be a need for you to drain the collected water.  

What Could’ve Been Better? 

We have to agree that this is a great dehumidifier when it comes to the effectiveness of removing humidity and mold spores. But, it does come at an expensive price point, especially when we take in the area coverage of this device. 

  • Drainage is effortless
  • Sturdy handles help in portability
  • Also works for industrial dehumidification
  • Comes with good energy efficiency
  • Expensive
Dimensions: 12.2″ x 19.2″ x 13.3″ | Weight: 58.9lbs | Capacity: 120 Pints | Air Flow Capacity: 130 CBM | Warranty: 5 Years

4. BLVEDEEP Basement/Crawl Space Dehumidifier

Compared to the regular dehumidifier, this unit from BLVEDEEP has been specially created for stuffy areas like your basement or crawl space. Hence, it can easily suck in the crawl space moisture to prevent dust mites or rot in the wood structure of your home. Let’s check out some of its best features. 

BLUEDEEP Basement/Crawl Space Dehumidifier,145 Pints (Saturation) 70...
  • ✔[AUTO DEFROSTING SYSTEM] The auto defrost is...

Why Did We Like It? 

The best feature of this dehumidifier has to be the design of its air inlet. On one side of this unit, you can find an elaborate grate that lets in the humid-filled air. This allows the device to extract up to 145 pints of water per day from the moisture-laden air. 

Moreover, the digital humidistat control is easy to follow, and you can change the timing or function according to your preference. The clear display also shows you the humidity level of the room. In case of a power outage, the device has been programmed for automatic restart based on its memory of the last setting. 

Furthermore, the high-airflow filter of this device traps dirt from getting into the circuit board. You can also take it out occasionally to clean it under running water, so no change is necessary. 

What Could’ve Been Better? 

Our only gripe about this dehumidifier is that the remote control isn’t included with this particular model. The inclusion of a remote would have made controlling it much easier, especially for those with small crawl spaces. Nevertheless, the mounted controls are easy to use, even for a beginner. 

  • Dehumidifies air quickly
  • Compact design
  • Works in areas with low temperature
  • Great customer care service
  • Have to buy the remote separately
Dimensions: 14.8″ x 22.6″ x 13.7″ | Weight: 71.8lbs | Capacity: 145 Pints | Air Flow Capacity: N/A | Warranty: 5 Years

5. AlorAir Sentinel Duct-able Version Basement/Crawl Space Dehumidifier

AlorAir is a reputable brand when it comes to dehumidifiers, and this is by far one of its best models. Along with the powerful ability to dry out the air of a crawl space within minutes, this device comes with a five-year warranty. So, let’s check out its features. 

AlorAir Duct-able Version Basement/Crawl Space Dehumidifiers 198 PPD...
  • 👍Energy Star Certified Dehumidifier: Quickly...
  • 👍 Heavy Duty Condensate Pump: When removing...

Why Did We Like It? 

First off, the thing that attracted us to this dehumidifier was the high extraction capacity. This device can pull in up to 198 pints of water in a day, which is phenomenal. Apart from that, it can smoothly cover an area of 2,600 square feet. 

As this unit is from AlorAir, we can’t miss out on talking about energy efficiency. The device does have an automatic on-and-off function, so it stops as soon as the expected humidity level has been met. So, you don’t need to worry about its energy consumption even when put on a 24-hour cycle. 

Furthermore, there’s no need to worry about cleaning out the water as the dehumidifier is fitted with a condensate pump. Place the drain hose close to the main outlet, and the area won’t get messy.  

What Could’ve Been Better? 

We think that every brand should aim to make a device user-friendly. Even though this dehumidifier is pretty easy to understand, the user manual could have been a tad simpler. But, the videos provided by AlorAir do work well, especially in the case of duct installation. 

  • Doesn’t utilize much energy
  • Compact and portable
  • Works even at low temperatures
  • Great for heavy-duty or commercial dehumidification
  • The user guide is hard to understand
Dimensions: 23.2″ x 15.2″ x 17.7″ | Weight: 70.5lbs | Capacity: 198 Pints | Air Flow Capacity: 210 CBM | Warranty: 5 Years

Best Crawl Space Dehumidifier Comparison Table

Product Dimensions Weight Capacity Air Flow Capacity Warranty
Honeywell Energy Star Dehumidifier 10.5″ x 13.2″ x 20.1″ 14lbs 20 Pints 118 CBM 5 Years
BaseAire Portable Commercial Dehumidifier 12.2″ x 19.2″ x 13.3″ 44.9lbs 113 Pint 120 CBM 5 Years
BASEAIRE AirWerx Crawl Spaces Dehumidifier 12.2″ x 19.2″ x 13.3″ 58.9lbs 120 Pints 130 CBM 5 Years
BLVEDEEP Basement/Crawl Space Dehumidifier 14.8″ x 22.6″ x 13.7″ 71.8lbs 145 Pints N/A 5 Years
AlorAir Sentinel Duct-able Version Basement/Crawl Space Dehumidifier 23.2″ x 15.2″ x 17.7″ 70.5lbs 198 Pints 210 CBM 5 Years
Crawl space dehumidifier buying guide

Buying Guide For The Best Crawl Space Dehumidifier

While looking for the best crawl space dehumidifier, you’ll variably come to a standstill on having a look at the numerous options. And, it’s very easy to get yourself a device that would remain unused or would be unusable for your crawl space. Hence, through extensive research, we have collected some of the essential points to look for while getting a dehumidifier, especially for crawl spaces. 


One of the first things to remember while looking for a dehumidifier is that crawl spaces don’t usually have a lot of room. Hence, if you end up buying a big device, it may not fit in that area. 

Before you even start looking for a dehumidifier, we suggest taking the height of the available space. To do this, take a tape measure and find the length between the floor until it touches the brick or wooden roof. That should be the maximum height of any device you want to fit in the crawl space. 

Area Coverage

Similar to the previous point, another essential point to consider is the area coverage of a device. The area of a certain space is usually measured in square feet, and brands will explicitly mention the maximum area coverage for a space. 

Ideally, you should always calculate the area of the crawl space of your house before ordering a dehumidifier. Even though it might seem like a bright idea to get one with a large area coverage, it may end up causing the air to get too dry. Hence, be careful about choosing the perfect area coverage, which would also decide the size of the overall device. On average, most dehumidifiers go up to 2,500-3,000 square feet. 

Dehumidifying Capacity

What’s the use of a dehumidifier if it can’t get down the humidity levels of a crawl space? That’s why while looking for one, make sure to check its performance capability. Usually, most dehumidifiers will run for a cycle of 24 hours and get rid of the moisture from the air present in a space. 

Brands often market the products with the drawing capacity by mentioning the pints of water drawn per day (PPD). When you’re buying a dehumidifier for a larger space, try to get a device with more capacity to draw the maximum amount of humidity. The average range is between 10-90 pints per day, but there is some huge unit with extra capacity. 


While looking for the best crawl space dehumidifiers, you should also check out the features included in the device. Without a proper device, a dehumidifier can give you a hard time when it comes to using it. 

One of the foremost points is the ease of use. It’s best to get a device that comes with a clear digital display that shows the settings and the humidity level. Remote control or Wi-Fi capability is always an add-on as it lets you control the device from anywhere around your home. 

Another important feature is the filter present in a dehumidifier. Some come with added benefits to clear out the air quality. However, the simplest thing to look for is how frequently the filter needs a change and if the method is easy. 

Frequently Asked Questions

Are crawl space dehumidifiers expensive to run?

The cost of running a crawl space dehumidifier will depend on the model you choose and the size of your crawl space.

Generally speaking, however, they are not expensive to run and the cost savings from preventing mold and mildew growth can easily offset any electricity costs.

Are crawl space dehumidifiers safe to use?

Yes, crawl space dehumidifiers are safe to use. They are designed to be used in enclosed spaces and are equipped with safety features such as auto shut-offs and low-voltage wiring.

What size dehumidifier do I need for my crawl space?

The size of the dehumidifier you need for your crawl space will depend on the size of the space and the humidity level you want to maintain. A larger dehumidifier will be able to handle a larger space and higher humidity levels.

White air purifier in the kitchen of the apartment. Close-up, selective focus


After comparing the top 5 crawl space dehumidifiers on the market, here are the top three expert recommendations that will cater to your specific needs:

The Honeywell Energy Star Dehumidifier is an ideal option for those with smaller crawl spaces who want to improve air quality efficiently.

The BaseAire Portable Commercial Dehumidifier is a good option for those living in hot and humid climates who need a powerful dehumidifier with enhanced airflow.

Lastly, the BASEAIRE AirWerx Crawl Spaces Dehumidifier is the right choice for those requiring a compact yet powerful dehumidifier that is easy to maintain and energy-efficient.

So, that’s everything we had to tell you about getting the best crawl space dehumidifier. We hope that our recommendations will help you to find a suitable device to bring down the crawl space humidity levels in the crawl space of your home.

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