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5 Best Crawl Space Dehumidifier | Reviews + Guide

No one likes to be hit with a surprise mold and mildew situation, but that’s what tends to happen when humidity increases. 

Crawl Space Dehumidifier 001

No matter what kind of house you have, there will always be crawl spaces or basements that may become damp with time. If the moisture content increases inside the homes, the chances of getting trapped in these spaces are high. And that is when the real issues start to arise. 

Not only does it pose a threat to the structural integrity of the house, but it can be harmful to the people living in it. This is why adding a dehumidifier to a crawl space is ideal, as it keeps the air clean and the house damage-free. 

For this purpose, we have put together a comprehensive guide that will help you find the best crawl space dehumidifier. We hope this list allows you to purchase the most suitable products that can keep your family safe. 

Without further ado, let’s get right to it! 

Best Crawl Space Dehumidifier

Best Crawl Space Dehumidifier

Each of these dehumidifiers has been carefully selected based on their dehumidification capacity, energy efficiency, durability, and user reviews. So, without further ado, here's the list of the 6 best crawl space dehumidifiers to keep your crawl space dry and well-protected.

1. AlorAir Sentinel HD - Best for Smart Technology

Healthy air in the house should never be a luxury, and that is something AlorAir believes in. Thanks to the compact design and the intelligent technology that runs the product, everyone can avoid musty odor and mold growth. Not only is this dehumidifier great for crawl spaces but also basements, apartments, and shops. 

ALORAIR Crawl Space Dehumidifiers 120 PPD Moisture Removal,...
  • 👍Energy Star Certified Dehumidifier-quickly and...
  • 👍Automatic Defrost-a quick and efficient defrosting...

Why Did We Like It?

This may seem unnecessary but if you have just moved into a house, hear us out. With time, you may find excessive moisture in the hidden nooks and crannies of the house, which leads to a ton of issues. To help tackle that, we recommended looking into a crawl space dehumidifier like this one. 

The AlorAir crawl space dehumidifier is one of the smartest products on the market, thanks to the technology that goes behind it. It will help by removing excess moisture from the air and keeping the environment dry. Furthermore, the reduced humidity level is better for the body. 

Another fantastic benefit is that the product has an auto-defrost system that enables you to use it no matter how cold it is. Meaning, you can always have excellent overall air quality throughout the year. 

What Could’ve Been Better?

In our honest opinion, this crawl space dehumidifier is all you need as it secures the structural integrity of your home by ensuring that there isn’t too much humidity. The only thing we suggest being wary about is customer care as it can be a bit frustrating to reach them. 


  • Eliminates musty odors
  • Brings down the humidity level of the house
  • Optional remote control feature
  • Small frame makes it ideal for smaller crawl spaces


  • Customer care team is not great

Coverage Area: 1,300 sq ft | Moisture Removal: 120 Pints/Day | Energy Star Certified: Yes | Auto-Defrost: Yes | Warranty: 5 Years

2. BaseAire Commercial Dehumidifier - Best for Efficiency and Transportability

Halfway through the list, we cannot go on without mentioning this crawl space dehumidifier by BaseAir. This product is perfectly sized for a tight space but also can be used in multiple areas. Additionally, this product can remove humidity efficiently and prevent mold while being easy to transport from room to room. 

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

Why Did We Like It?

One of the reasons this one stood out for us was because it is great for crawl spaces with collected water. Considering that this is a commercial-grade dehumidifier for households, it is well-equipped to deal with tons of moist air in tight spaces. Additionally, the evaporator and the filters ensure that the product runs smoothly for a long time. 

We also appreciate the fact that it features some of the more common features like a memory restart in case of a power outage. Furthermore, the dehumidifier can be used at low temperatures as it has a defrosting feature that will keep it going. Despite being commercial level, this product does not make a lot of noise while maintaining humidity levels. 

What Could’ve Been Better?

The one thing you need to be wary of is that this crawl space dehumidifier does not have a pump that allows for automatic draining. Hence, you will have to arrange for an appropriate drainage hose and place it at an elevation for seamless draining. 


  • Commercial dehumidifier for the house
  • Durable with high-quality parts
  • Remote controllers can be bought
  • Product can self-diagnose any issue that crops up


  • Needs to be installed in a particular way for auto-drainage

Coverage Area: 1,200 sq ft | Moisture Removal: 113 Pints/Day | Energy Star Certified: No | Auto-Defrost: Yes | Warranty: 1 Year

3. Waykar Industrial Dehumidifier - Best for User-friendly Operation

Next on the list is this one by Waykar, and it is made for people who want something that works well but is not complicated to understand. This industrial dehumidifier is ideal as it has an advanced display that shows everything necessary, and there is no need to spend hours on it with the manual. 

Waykar 158 Pints Commercial Dehumidifier for Crawl Spaces,...
  • EFFICIENCY & LARGE CAPACITY: This crawl space/basement...
  • CORROSION PROTECTION: This dehumidifier features an internal...

Why Did We Like It?

One of the first reasons this one stood out for us was because of how innovative the technology in this product is. The Waykar industrial humidifier features smart humidity control that automatically adjusts itself based on the humidity in the room and works based on pre-set levels. Moreover, it can automatically turn on and off based on the humidity levels. 

We were also pretty impressed with the capacity of his dehumidifier, as it can remove 155 pints of moisture per day. Despite the high volume, it is pretty compact, making it ideal for crawl spaces and basements. It can also be used at home in any living space since it does not take up a lot of room. 

The best part is that this product comes with a 30-day money-back guarantee. So, if you are not satisfied after a month, reach out to the company for a refund. 

What Could’ve Been Better?

We found this product to be quite reliable, efficient, and ideal to control the moisture level of any space. However, the overall make of the crawl space dehumidifier is not great, so it can get damaged quite easily. Furthermore, a lot of care must be taken when moving it around and even during installation. 


  • Backed with a money-back guarantee
  • Digital controls that make it easy to use
  • Removable controller for larger spaces
  • Features defrosting and automatic restart


  • Not a very sturdy make

Coverage Area: 6,500 sq ft | Moisture Removal: 158 Pints/Day | Energy Star Certified: Yes | Auto-Defrost: Yes | Warranty: 6 Years

4. Honeywell

Next up, we have this small but powerful dehumidifier by Honeywell. This is the ideal product to look at for people who are energy conscious (as we all should be). It is energy-star qualified, which ensures less energy is used than conventional dehumidifiers. Read on below to know what other eye-catching features it has. 

Honeywell Dehumidifier with Washable Filter, Energy Star,...
  • Powerful Dehumidifier for Small Rooms: This powerful beast...
  • Peace of Mind With a Brand You Trust: Honeywell TP30WKN...

Why Did We Like It?

Energy efficiency is a big deal to Honeywell, and this is why their dehumidifiers can work on lower energy and remain effective. To further corroborate this, the company has mentioned that the product has an energy star 4 star Energy Efficiency Certification by UL. 

Additionally, it is ideal for not just crawl spaces but kitchens, basements, attics, and any space where there might be a significant amount of moisture. We also love how easy it is to use this product as it has smart digital controls with a display screen which makes operation nearly effortless. 

Lastly, the product has smooth-gliding wheels, making it easy to transport it from one room to another. Adding to the convenience, the filters in the crawl space dehumidifier are washable, so you do not have to keep buying new ones. All you need to do is pay attention to the clean filter alert, so there is no hindrance to the dehumidification process. 

What Could’ve Been Better?

One of the biggest issues with this particular product is that it can be pretty bright at night when used in the bedroom. While it is ideal for any crawl space since it is quiet and works efficiently, using this humidifier in the bedroom may be an issue as the “night mode” feature does not turn off one display.


  • Ideal for smaller rooms
  • Backed by a five-year warranty
  • Wheels for enhanced portability
  • Noiseless operation


  • Front display light is too bright

Coverage Area: 1,000 sq ft | Moisture Removal: 20 Pints/Day | Energy Star Certified: Yes | Auto-Defrost: Yes | Warranty: 5 Years

5. AlorAir Sentinel HDi

Another great product by AlorAir is the Sentinel HDi90 dehumidifier which is ideal for crawl spaces and basements. Since a dry environment is crucial for the house and its people, you can sleep peacefully knowing this product will keep you safe. Additionally, this crawl space dehumidifier will keep foul odors and bacteria out. 

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

Why Did We Like It?

It is not very often that you find a compact dehumidifier that works just like a large-scale commercial one. And if you do find something like that, it is best to get your hands on it quickly. This crawl space dehumidifier by AlorAir may look small but has a moisture extraction capacity of 198 pints per day. Additionally, the small frame ensures portability. 

An added benefit that comes with this humidifier is the flexibility of installation. Depending on the requirement, this one can be attached to ducts or left freestanding. Furthermore, it is energy star certified and will not use as much energy as competitor brands. 

We also love the auto-defrost, memory restart, and auto-operation features, making it much easier to use. The best part is that it is protected under a five-year warranty. 

What Could’ve Been Better?

 We sincerely appreciate this dehumidifier considering how compact it is and yet can cover up to 2600 square feet effortlessly. However, we found it to be a bit on the higher side of the price range and might be a bit out of budget for many people.


  • Compact and energy efficient
  • Design has a built-in pump and high-quality filter
  • Compatible for remote control operation (bought separately)
  • Five years warranty to protect it


  • A bit expensive

Coverage Area: 2,600 sq ft | Moisture Removal: 198 Pints/Day | Energy Star Certified: Yes | Auto-Defrost: Yes | Warranty: 5 Years


Finally, we recommend the BLVEDEEP DK145 commercial-grade dehumidifier. Not only is this one great for crawl spaces and basements but can also be used in a greenhouse or industrial spaces. Considering that it has a massive extraction capacity, you can rest assured it will keep the space free from excess moisture, mold, and mildew.

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

Why Did We Like It?

One of the features that stood out for us regarding this particular humidifier was the adjustable humidity controller. Depending on the requirement, you can adjust the humidity control between 30% and 80%. Moreover, once the room reaches the level the crawl space dehumidifier was set at, it will auto-turn off (and turn on when needed).

It is great for eliminating dust particles from the air as it has a high-quality filter that can trap them all. The best part is that the filter is washable, and you do not have to go through the hassle of buying more. Furthermore, features like auto-defrost allow it to work even if the crawl space is a little chilly. 

All in all, this is a reliable product. It is built to last long, thanks to its steel exterior and high-quality, durable parts. 

What Could’ve Been Better?

On researching further about this product, it was hard to fault it at any point as it has raging reviews. However, the only thing to keep in mind is that it cannot be stored outdoors (like in the garage) and needs to be kept indoors at all times. 


  • Drain hose included
  • Easy to operate with an interactive display
  • Ideal for rooms up to 6000 square feet
  • Effective humidity and moisture control


  • Can only be stored indoors

Coverage Area: 6,000 sq ft | Moisture Removal: 145 Pints/Day | Energy Star Certified: Yes | Auto-Defrost: Yes | Warranty: 1 Year

Best Crawl Space Dehumidifiers Comparison Table

ProductCoverage AreaMoisture RemovalEnergy Star CertifiedAuto-DefrostWarranty
AlorAir Sentinel HD1,300 sq ft120 Pints/DayYesYes5 Years
BaseAire Commercial Dehumidifier1,200 sq ft113 Pints/DayNoYes1 Year
Waykar Industrial Dehumidifier6,500 sq ft158 Pints/DayYesYes6 Years
Honeywell1,000 sq ft20 Pints/DayYesYes5 Years
AlorAir Sentinel HDi2,600 sq ft198 Pints/DayYesYes5 Years
BLVEDEEP6,000 sq ft145 Pints/DayYesYes1 Year

Buying Guide For The Best Crawl Space Dehumidifier

Although we are done reviewing some of the top brands for dehumidifiers, we are far from finished. The issue with excess moisture is not a new one, and hence most crawl space dehumidifiers are well-equipped to control humidity levels. However, the main question is - which one is ideal for you? 

To simplify this, we have put together a short buyer’s guide to list out some of the top factors to consider when buying such a product. Let’s get into it in a bit more detail, shall we?

1. Size And Coverage

One of the first things to look into is the dehumidifier’s size and coverage area. Make sure you know the house’s square footage and the size of the dehumidifier to ensure it is suitable. Furthermore, most of these products mention pretty clearly the kind of space they can be used in.

Another thing to keep in mind is the pints per day amount of the product, ensuring it can extract moisture from the entire space. 

2. Noise Levels

Conduct ample research on the product to ensure it does not make noise as it does its job. Not only that, it is always better to have a crawl space dehumidifier that can operate silently from start to finish. Since many of these are kept in basements and crawl spaces near bedrooms, a quiet dehumidifier will ensure no one is disturbed.

3. Humidistat

The role of a dehumidifier is to reduce and maintain humidity levels. Hence, the humidistat is the essential feature of the product. Moreover, a programmable humidistat ensures that the entire product can be controlled without manually operating the product. 

The only thing to ensure is that the humidistat does not use up too much energy (as it tends to do). 

4. Drainage 

Most crawl spaces are quite dark, dingy, and challenging to be in for a long time. Having a crawl space dehumidifier in such areas will ensure humidity removal and drainage of any collected water without any manual help. This is why it is crucial to ensure that the dehumidifier comes with a drain hose and a convenient system for automatic drainage.

5. Additional Features 

There are excellent features in many units these days, such as auto-defrost, memory reset, and remote usage. All of these ensure the product is user-friendly and easy to maintain despite challenging circumstances.

Crawl Space Dehumidifiers FAQ's

  • Why do I need a crawl space dehumidifier?

    Crawl spaces are susceptible to high humidity levels, especially in humid climates or areas with poor ventilation. Excess moisture can lead to mold growth, musty odors, and structural issues. A crawl space dehumidifier helps maintain optimal humidity levels, preventing these problems and improving indoor air quality.

  • What size crawl space dehumidifier do I need?

    The size (capacity) of the crawl space dehumidifier you need depends on the square footage of your crawl space and the level of humidity present. It’s essential to choose a dehumidifier with a sufficient pint-per-day (PPD) rating to effectively remove moisture from your crawl space. Manufacturers typically provide sizing recommendations based on the area and humidity conditions.

  • Can I use a regular dehumidifier in the crawl space?

    While a regular dehumidifier can technically be used in a crawl space, it is not recommended. Regular dehumidifiers may not be designed to handle the specific conditions in crawl spaces, such as lower temperatures and restricted spaces. Crawl space dehumidifiers are built to withstand these conditions and perform more efficiently.

  • Can I use a crawl space dehumidifier with a sump pump?

    Yes, crawl space dehumidifiers can be used in conjunction with sump pumps. Some dehumidifiers have built-in pumps that can directly discharge water to the sump pit for automatic removal. Alternatively, you can use a gravity drain or a condensate pump to direct the collected water to the sump pump.

  • How often should I run my crawl space dehumidifier?

    The frequency of running your crawl space dehumidifier depends on the level of humidity in the crawl space. In humid conditions, it may be necessary to run the dehumidifier continuously or on a set schedule to maintain optimal humidity levels. In less humid conditions, you can adjust the dehumidifier’s settings accordingly.

  • Can a crawl space dehumidifier be used in basements or other areas?

    Crawl space dehumidifiers are specifically designed for use in crawl spaces and may not be as effective in larger areas like basements. For basement dehumidification, it’s best to use a dehumidifier specifically designed for that purpose, as basement dehumidifiers are generally more powerful and can handle larger spaces.

  • Best Crawl Space Dehumidifier


    We hope that you found our article to be both insightful and helpful in your pursuit of the best keyword. We've thoroughly tested each product and considered a variety of factors that are critical in determining its efficiency. It's safe to say that no stone was left unturned and we believe the products discussed will meet diverse user needs and circumstances.

    Out of these six superb products, here are our top three recommendations. The AlorAir Sentinel HD* is an ideal option for those seeking a system with smart technology that ensures healthy air quality, and with its compact design, it's a great choice for varying spaces in your home. If you're seeking a device known for its efficiency and easy transport, then the BaseAire Commercial Dehumidifier is a good option. It also stands out for its durability and ability to work effectively in tight spaces. Lastly, if you're after advanced technology and user-friendly operation, the Waykar Industrial Dehumidifier is the right choice. It features smart humidity control that adjusts itself based on the level of humidity in the room.

    We know that high humidity can lead to all sorts of damage in our homes and adversely affect our health. These dehumidifiers are designed to help maintain a healthy and safe environment in our living spaces. Remember, the best solution is one tailored to your specific needs and circumstances. Use the list here to determine precisely what those needs are and what product is a perfect match.

    Thank you again for reading our guide. We're confident that it has provided you with the necessary information to make an informed purchase decision. We wish you luck in creating healthful living spaces for yourself and your family. Don't hesitate to revisit this article as a tool for safeguarding your home from excess moisture and ensuring clean, breathable air. Happy shopping!

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