Best Crawl Space Dehumidifier for Fresh Basements

Ian Mutuli
Updated on
Ian Mutuli

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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What is a crawl space dehumidifier, you ask? These devices intend to assist in removing any excess moistness and remove high humidity levels from the air. High humidity levels in your crawl spaces can be the main reason for many unfriendly consequences in your house. Examples of such consequences are; heavy odors in your house, mold problems, allergy triggers, the presence of pests, and structural damage. Subsequently, proper care of your crawl space moisture problems should be vital to any homeowner. This benefits your crawl space by making it less hospitable to fungi, heavy odors, bacteria, and all the problems mentioned. Also, assists in circulating fresh and clean air in your home.

Finding a high-quality crawl space dehumidifier for your crawl spaces can be difficult. Your crawl space dehumidifier size should be categorized by how many pints of water it draws from the air daily (24 hours). In that case, 30-pint crawl space dehumidifiers draw 70 pints of moisture daily, whereas the 70-pint dehumidifiers draw 70 pints daily. 1 pint is equivalent to 0.125 gallons or 0.47 liters.

A great crawl space dehumidifier outdoes moisture-absorbing bags and any other dehumidifier gadgets.  Irrespective of the style, any dehumidifier pulls air in and extracts moisture from the environment. The air then passes over coils or sinks, dependent on which style, before it’s ready to be collected. Some models use tanks to care for the collected moisture, while others use pumps or a hose.

The best crawl space dehumidifier all-in-one that we reviewed is the MIDEA Dehumidifier. It was a workhorse dehumidifier with decomposable and lasting filters. Our second-best choice is Honeywell Energy Star Dehumidifier which has a straightforward design that helps improve indoor air quality. The third crawl space dehumidifier combo we selected is the AlorAir 55-Pint Crawl Space Dehumidifier which had the perfect shape to fit and dehumidifier compact spaces.

Our Top Picks- The Best Crawl Space Dehumidifier

1. MIDEA Dehumidifier

Midea 4,500 Sq. Ft. Energy Star Certified Dehumidifier...
  • 4,500 SQ. FT. DEHUMIDIFIER – Removes up to 50 pints of moisture...
  • ULTRA QUIET OPERATION – This model has quiet operation as 47...
  • ENERGY STAR CERTIFIED- This unit is ENERGY STAR Certified and is...
  • SIMPLE DRAINAGE – Simply empty the water tank when it is full...
  • EASY TO USE – This unit was designed with a clean, sleek look...

This MIDEA MAD50C1ZWS Dehumidifier is an energy-star certified by the Environmental Protection Agency. It proved to be more efficient than other machines in the market. Besides, it was very convenient and had a smooth and clean look. This 70-pint model was the largest size in this model range. It was also a workhorse dehumidifier with decomposable and lasting filters.

Going larger than the recommended one was worthwhile, as it lasted longer. This crawl space dehumidifier easily fits into our home design. The 4,500 square feet (418.06 m) crawl space dehumidifier removed roughly up to 70 pints (32.9 liters) of water daily.

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Additionally, this was a pleasant choice suitable for our basement use, bedrooms, and any other crawl spaces. The remaining moisture was tougher at low temperatures, so vertical airflow was needed. This helped the crawl space dehumidifier to be faster and more effective. The one problem this model has is the need for a water pump. One has to get a hose. Also, when used for long periods, it heats up a bit.


  • Has handles and wheels for easy transport
  • It has a wide coverage area of 4,500 square feet
  • Great value for a 70-pint dehumidifier
  • The auto-restart feature turns itself back on after power outages
  • Powerful turbo mode increases dehumidification when needed
  • High Affordability and Huge Coverage Area
  • Extremely Quiet
  • It works outstandingly well in low-temperature basements
  • Brilliant energy-efficiency
  • Contains huge side vents to remove 70 pints of water


  • Efficiency problems of adequate water withdrawal
  • Runs hot when used for long periods
  • Improper care triggers the growth of mold
  • The delicate hose can develop leakages quite easily
  • It needs manual emptying of the bucket
  • Its fan motor is louder than other models

2. Honeywell Energy Star Dehumidifier

Honeywell 20 Pint Energy Star Dehumidifier for Small...
  • Powerful Dehumidifier for Small Rooms: This powerful beast...
  • Peace of Mind With a Brand You Trust: Honeywell TP30WKN...
  • Effectively Removes Moisture and Odor: Effectively removes excess...
  • Easy to Use, Easy to Maintain: The durable air filter helps...
  • Smart & Designed for Comfort: Smart digital humidistat control...

The Honeywell dehumidifier is the best choice to improve the general air quality in your home's basement space. It has a straightforward design; anybody without experience can use it immediately. When looking for crawl space dehumidifiers, you'll frequently see unsightly devices.

With this small-space-appropriate dehumidifier, however, that is different. Despite a plastic frame, the components are all well put together, giving it a unified look. Additionally, this device has wheels to roll around the basement area.

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The dehumidifier removes up to 20 pints of water daily without consuming much power. Since it is efficient, you can instantly feel the difference in humidity levels. You don't have to change its filter since they are washable. However, we recommend it for small spaces, but if you have a bigger room, you will have to get more units or one with a large capacity. 


  • Lightweight design
  • Easy to maintain
  • Saves a lot of energy
  • Uncomplicated installation


  • Only good for small crawl spaces

3. AlorAir 55-Pint Crawl Space Dehumidifier

ALORAIR Basement/Crawl Space Dehumidifiers Removal 120...
  • 👍120 PPD Dehumidifier-quickly and effectively removes moisture...
  • 👍Automatic Defrost-a quick and efficient defrosting process,...
  • 👍INTERNAL CORROSION PROTECTION-an advanced technology to...
  • 👍DESIGNED FOR THE MODERN HOME-for the satisfaction, we...
  • 👍5 Years Warranty & safety tested. Our sentinel HD55...

We highly recommend the AlorAir 55-Pint Crawl Space Dehumidifier for compact spaces. Its shape and size make it easy to fit in compromised spaces. This makes it excellent for crawl spaces or basements.

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It removes 55 pints of water daily and covers up to 1,300 square feet. It has additional features, such as automatic shutoff once it reaches the desired humidity levels.


  • Compact and Rectangular Design
  • Set Desired Humidity Level
  • Automatic Drainage
  • Odor Control Filter
  • Internal Corrosion Prevention
  • Defrost Function Protects Device


  • No Pump Included
  • Sensors Malfunction
  • Noisy

4. Aprilaire 1850 Pro Dehumidifier

Aprilaire - 1850Z 1850 Pro Dehumidifier, 95 Pint...
  • BUILT TO LAST with corrosion-resistant aluminum coils, Aprilaire...
  • MINIMIZE AIRBORNE VIRUS SURVIVAL rates by keeping relative...
  • REMOVES UP TO 12 GALLONS (95 pints) of water per day
  • NO MESSY WATER TRAY TO EMPTY and simple to set up - just place a...

This Aprilaire 1850 Pro dehumidifier is a 95-pint (44.95 liters) device and signifies an impressive and highly classified crawl space dehumidifier in the market today. It was perfect for dehumidifying our entire house since it removed 95 pints (44.95 liters) of humidity from the air. It had a design for large areas and worked well hand in hand with our HVAC system to get rid of immense humidity amounts from the air in our house.

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With its 95-pint (44.95 liters) moisture removal potential and 3000 SQ FT (278.71 m) coverage area, this crawl space dehumidifier was adequately powerful to have and keep our home dry irrespective of its dimensions. Additionally, this dehumidifier performed three times as much as other leading brands of dehumidifiers and used less than 5 kilowatts of electricity per hour.

The crawl space dehumidifier Aprilaire 1850 Pro featured a digital display and humidistat for improved usability, and its performance could be perfectly described as large and in charge. It's made of a durable rust-resistant steel material highlighting a gray shade and was built to last for long periods. Even though this model was quite heavy, it had an extremely small footprint. It is important to note that it had adjustable outlet options that permitted us to employ either the top or the side to release moisture.


  • Comes with powerful built-in controls with easy-to-read displays
  • Easy-to-clean filters
  • The noise levels are quite controllable
  • It is very easy to set up
  • Low maintenance
  • Very efficient for moisture removal
  • Ideal for smaller spaces
  • Highly portable


  • Quite costly
  • It's quite heavy
  • The fan runs nonstop
  • A bit loud
  • It's not that energy efficient
  • Not many features; few functions
  • Does not have handles

5. Aprilaire 1820 Pro Dehumidifier

Aprilaire 1820 Pro Dehumidifier, 70 Pint Commercial...
  • Monitors and mitigates humidity separate
  • Automatic digital controls
  • Wi-Fi control
  • Comes with a 5-year warranty
  • Another great item from Flora Hydroponics

This Aprilaire 1820 Pro Dehumidifier is one of the best crawl space dehumidifiers on the market. This powerful machine is ideal for crawl spaces or any closed basements, and it also removes up to 70 pints (32.9 liters) of water from the air daily. We were impressed with this model since it needed a messy bucket or tray to empty.

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We only used a hose to empty or position the machine next to or straight over a drain. We then leveled it, plugged it in, chose our preferred settings, and let it run uninterruptedly. Moreover, it had a mobile control panel that one could mount and place on the side of the top of the unit for easy access. Although, this was reliant on how our crawl space was built. Plus, it was covered by a notable 5-year warranty, increasing its durability chances.

This machine was a long-lasting buy because it was sturdy and durable. Plus, it used coils made of corrosion-resistant aluminum that prevented any leakages. The filter is the only thing we clean or change annually, making it easy to maintain. The significant downside comes during installation. The model Aprilaire 1820 Pro crawl space dehumidifier weighs about 56 pounds (25.4 kg). This can be problematic to lift into place without seeking help. Nevertheless, depending on how your crawl space looks, you might need to hire an expert.


  • Eliminates up to 70 pints (32.9 liters) of water daily
  • Has an easy-to-use display
  • No water tank to empty
  • Comes in a user-friendly interface
  • A portable design that you can place anywhere
  • Contains two dehumidification capacity size options to choose from
  • Requires you to change filters only once a year hence minimal maintenance
  • It has a mount control panel on the top or side unit for easy access


  • Slightly bulky and may need an expert for installation
  • It is a bit louder than other models
  • Not as energy-efficient as other options
  • Relatively expensive in comparison to other models in the market

6. Ivation 50-Pint Energy Star Dehumidifier

Ivation 3,000 Sq Ft Energy Star Dehumidifier -...
  • POWERFUL COMPACT HOME DEHUMIDIFIER | High-Capacity Compressor...
  • INTEGRATED 16-WATT PUMP & 16’ HOSE | Allows for Easy Upward...
  • EASY LCD DISPLAY WITH NOTIFICATIONS | Simple Operation Requires...
  • SPACIOUS 6 LITER WATER RESERVOIR | Two Ways to Control Moisture!...
  • QUIET, EFFICIENT & PORTABLE DESIGN | Attractive Unit Blends with...

The Ivation 50-Pint dehumidifier is mainly famous for its effectiveness. It was compact and a powerful crawl space dehumidifier, making it perfect for bedrooms or even basements with an area capacity of 3000 square feet (278.71 m). This dehumidifier came with a pump and an additional long drain hose, ensuring continuous drainage.

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This device gave us all the great qualities we wanted in a high-quality dehumidifier. Those qualities were easy operations, low maintenance, convenience, and a blend of power and energy efficiency. On the other hand, this crawl space dehumidifier featured a smooth design. This gave it the best aesthetics together with an outstanding performance. This model also had a compressor that maintained our environs at sufficient humidity points for an ideal atmosphere. It mainly assisted in removing any extra moisture in the air and any bad odors, mold, or allergens in our house.

It had additional features like an auto-restart function which comes in handy in the case of power outages, and auto-shutoff, which helps when the water container is full. Then again, it has an auto-defrost function that guards the crawl space dehumidifier against internal damage if the temperatures are lower than required. It is one of the best dehumidifiers with a pump function. On the notable negatives, this crawl space dehumidifier is relatively noisier than a user would want it, but it is not a major inconvenience.

Image Credits:


  • Highly portable because of the size
  • Easy-Empty Reservoir
  • Filters are easily washable and reusable
  • Very easy to operate and maintain
  • Perfect for spaces of up to 3000 square feet
  • No extra cost for maintenance is needed making it cost-effective


  • It is a loud operation
  • The dehumidifier is expensive compared to others
  • Emptying the water tank is tricky as the water tank gets stuck
  • This dehumidifier does not come with screws to hold it in place
  • The needed screws are hard to locate

7. BaseAire AIRWERX55Basement/Crawl Space Commercial Dehumidifier

BaseAire AirWerx55 Dehumidifier for Crawl Space...
  • 1. [120 Pints Dehumidifier ] Removing up to 55 pints of water per...
  • 2.[ Easy-to-use Dehumidifier ] Plug it in, set the target...
  • 3.[ Auto-Defrost & Memory Restare Function ] Auto defrost...
  • 4.[ Portable Design & Compact Size ] Dehumidifier ideal for Crawl...
  • 5.[ Quality Support & Good Service ] All BaseAire Dehumidifiers...

If you are looking for a crawl space dehumidifier for hot and humid climates, then the Baseaire AIRWERX55 is the one. It removed moisture from the air and controlled the humidity levels. It is best for small and medium rooms such as the kitchen, bathrooms, basements, and laundry. We were impressed with its automatic features, such as the defrost and adjustable humidistat with a memory saver feature. It could automatically shut down after reaching the set humidity level.

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The best feature of the Baseaire AIRWERX55 is the tube evaporator. Also, it has a rare earth alloy and features an auto-defrost function that enables it to function in cold seasons. It also has a filter to prevent particles from entering the dehumidifier.


  • Runs smoothly in low temperatures
  • It uses filters to clean the air


  • It is heavy

8. Dri-Eaz Revolution LGR Industrial Dehumidifier

Dri-Eaz Revolution LGR Commercial Dehumidifier with...
  • One Dri-Eaz Revolution LGR Commercial Dehumidifier with Pump
  • Professional compact dehumidifier with drain hose features...
  • Lightweight, portable dehumidifier machine is easy to store,...
  • Water remover extracts up to 17 gal of water from the air per...
  • Ideal crawlspace dehumidifier, bathroom dehumidifier and...

If you are looking for a small and portable dehumidifier, then the F413 by Dri-Eaz is the one. You can place it in your crawlspace, garage, or other tight areas of your house. It removes 12 gallons of water daily. The F413 has a 4-stage filtration system that removes harmful particles like mold spores.

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It also has an automatic restart in case of a power outage. It has durable housing that is rotomolded and made in the USA. It has a 40-ft drain hose that removes the condensate. If you are into small dehumidifiers, you can also look out for the best small dehumidifiers for home and office use.


  • Ultra compact & portable
  • Automatic restart if the power goes out


  • The internal condensate pump is prone to breaking

9. Moiswell 212 Pints Commercial Dehumidifier

Moiswell 212 Pints Commercial Dehumidifier with Pump...
  • Designed for Crawl Space: With a horizontal design and measuring...
  • Commercial Grade Dehumidifie: This Moiswell dehumidifier XP120...
  • Dehumidifier with Pump for Easy Drainage: This commercial...
  • Easy Operation: Simply set the desired humidity value, this crawl...
  • Designed with Convenience in Mind: The pump is easy to access for...

If you have a large area like a hotel or a construction site, you need a heavy-duty commercial dehumidifier like the Moiswell one. Most crawl space dehumidifiers may function, but this is an exception. It removes humidity of up to 212 per day. It is large, but it has handles that you can use to carry it around. We were impressed with the heavy-duty fans at 353CFM, allowing it to cover large spaces up to 8000 sq. ft.

Image Credits:

The dehumidifier has a 16-foot-long drain hose pipe in the package. It also allowed us to set the desired humidity levels by ourselves since it had auto-cycles On/Off for maintaining the humidity levels. In addition, this dehumidifier's auto drain and defrost functions made our lives even easier. It could auto restart, return to the previous settings after a power outage, and start working again.


  • Highly durable and long-lasting.
  • Installation is easy.
  • Has a gravity drain.


  • Very Expensive

Benefits Of Using A Crawl Space Dehumidifier

  1. The best crawl space dehumidifiers help in balancing humidity levels in the house.
  2. Crawl space dehumidifiers get rid of mold, fungus, and stuffy odors. It is very important to get rid of them as they are the leading causes of plenty of respiratory issues. They affect particularly the kids and also the elderly. Also, using dehumidifiers helps to avoid triggering asthma symptoms.
  3. When dehumidifiers get rid of excess humidity from the air in your home, they make it easier to protect everything in the house from moisture.
  4. Crawl space dehumidifiers also make it simple to control indoor humidity and set it to a good and recommendable level.

Factors to Consider When Buying the Best Crawl Space Dehumidifier

There are many important factors to consider when buying the best crawl space dehumidifier:

1. Size and Capacity

Humidifier size refers to its physical dimensions, which should fit comfortably within the crawl space. Additionally, the dehumidifier's capacity refers to its ability to remove moisture from the air, measured in pints per day.

It is essential to choose a dehumidifier with a capacity appropriate for the size of the crawl space to reduce moisture levels and prevent mold growth effectively. Failure to choose the appropriate size and capacity can result in an inefficient dehumidifier that fails to control humidity levels adequately.

2. Energy Efficiency

Since the dehumidifier will likely be running continuously to control humidity levels, it is important to choose a model that is energy efficient to reduce operating costs. Energy-efficient dehumidifiers consume less electricity, which is cost-effective and environmentally friendly.

When shopping for a crawl space dehumidifier, buying models with Energy Star certification is advisable, which indicates that the product meets strict efficient energy standards set by the US Environmental Protection Agency.

3. Durability and Construction

Since the unit will be installed in a damp and potentially corrosive environment, choosing a dehumidifier made from durable materials and constructed to withstand harsh conditions is important. Stainless steel or coated aluminum is excellent for a crawl space dehumidifier's casing and internal components since they are corrosion-resistant and sturdy.

Additionally, dehumidifiers with robust internal components such as compressors and fans will likely last longer and require less maintenance. Investing in a well-built and durable crawl space dehumidifier will ensure that the unit operates efficiently for a long time, providing consistent and effective moisture control.

4. Drainage Options

The two main types of drainage options are gravity drainage and pump drainage. Gravity drainage involves connecting the dehumidifier to a drain or sump pump through a hose, allowing water to flow out of the unit and away from the crawl space. On the other hand, pump drainage involves using a built-in pump that can pump water from the dehumidifier to a designated location.

While both options can effectively remove water from the unit, pump drainage may be more efficient and convenient, especially if there is no existing drain or sump pump in the crawl space. Additionally, ensure the drainage option is compatible with the specific dehumidifier model to avoid potential leaks or other problems.

5. Humidity Control Settings

The ability to adjust humidity levels is essential for effective moisture control, and different models of dehumidifiers offer varying levels of control. Some units feature a basic on/off switch, while others offer more advanced settings that allow users to set target humidity levels and adjust fan speeds to optimize performance.

Models with humidity sensors can automatically adjust humidity levels based on the moisture content in the air. It is important to choose a dehumidifier with humidity control settings that suit the specific needs of the crawl space, considering factors such as the level of moisture and the size of the space. Choosing a dehumidifier with effective humidity control settings will help maintain optimal humidity levels and prevent mold growth and other moisture-related problems.

6. Noise Level

Noise level is crucial when purchasing a crawl space dehumidifier, especially if the unit will be installed in a living or working area. Some dehumidifiers can produce loud noises during operation, distracting and even disruptive. Models with advanced insulation and vibration-reducing features can help reduce noise levels, making them more suitable for use in crawl spaces near living or working areas.

Additionally, it is important to consider the decibel rating of a dehumidifier, with lower decibel ratings indicating quieter operation. Choosing a dehumidifier with a low noise level will help ensure a comfortable living or working environment while maintaining optimal humidity levels in the crawl space.

7. Price

The cost of dehumidifiers can vary widely, depending on the features, capacity, and brand. While you may want to choose the cheapest option, remember that investing in a higher-quality dehumidifier can lead to greater energy efficiency and durability, ultimately resulting in long-term cost savings.

It is important to compare the price of dehumidifiers with their features, capacity, and energy efficiency ratings to ensure that the investment provides the best value for money. Additionally, it is important to factor in the cost of installation, maintenance, and potential repairs when considering the overall cost of a crawl space dehumidifier.

8. Brand Reputation

Buying a reputable brand with a proven track record of producing high-quality dehumidifiers can help ensure that the unit is reliable and performs effectively over time. Reputable brands are more likely to provide warranties and after-sales support, giving buyers peace of mind and protection in case of any issues.

It is advisable to research the brand and review other customers' reviews to gain insight into the quality of their products and customer service. Choosing a trusted and reputable brand dehumidifier can help ensure that the investment provides reliable and effective moisture control for the crawl space.

Frequently Asked Question On The Best Crawl Space Dehumidifier

1. Is it worth putting a dehumidifier in a crawl space?

Yes, it can be worth putting a dehumidifier in a crawl space. Crawl spaces are often damp and humid, which may result in mold growth, wood rot, and musty odors. By reducing the humidity level in the crawl space with a dehumidifier, you can help prevent these problems and improve the air quality in your home. For best results, you can try out the best air purifier and dehumidifier combo.

However, addressing any moisture issues, such as leaks or standing water, is important before installing a dehumidifier in your crawl space. These issues should be resolved before using a dehumidifier to prevent the unit from working too hard and potentially malfunctioning.

Choosing the right size and type of dehumidifier for your crawl space is also important. A unit with a capacity that is too small will not be effective, while a unit that is too large can lead to excessive drying and damage to your home's structure. Additionally, consider a dehumidifier with features such as automatic shutoff and a built-in humidistat to make operation easier and more efficient.

2. How can you dehumidify a crawl space?

Dehumidifying a crawl space is important to prevent moisture buildup and the growth of mold and mildew. Here are some ways to dehumidify a crawl space:

  1. Install a dehumidifier: A dehumidifier is a device that removes moisture from the air. Installing a dehumidifier in the crawl space can help reduce humidity levels.
  2. Use a vapor barrier: A vapor barrier is a plastic sheet placed over the soil in the crawl space to prevent moisture from entering the space. This can help reduce humidity levels.
  3. Improve ventilation: Ventilation can help reduce humidity levels by allowing air to circulate in the crawl space. Installing vents or fans can help improve ventilation.
  4. Seal air leaks can allow moisture to enter the crawl space. Sealing any air leaks can help reduce humidity levels.
  5. Use a sump pump: If water enters the crawl space, a sump pump can help remove the water and prevent moisture buildup.

3. What size dehumidifier do I need for my crawl space?

The size of the dehumidifier for your crawl space depends on the space size and the humidity level. It would help to aim for a dehumidifier that can remove 10-12 pints of moisture daily for every 500 square feet of crawl space.

To determine the size of your crawl space, measure the area and multiply them together. For example, if your crawl space is 20 feet long and 10 feet wide, the size would be 200 square feet. Once you have determined the size of your crawl space, consider the humidity level. A 30% and 50% humidity level is recommended for a healthy living environment. Consider a larger dehumidifier if the humidity level is consistently above 50%.

It's also important to note that the dehumidifier you choose can affect its effectiveness. A dehumidifier with a built-in humidistat will turn on and off automatically to maintain a consistent humidity level, saving energy and reducing wear and tear on the unit. Overall, it's best to consult a professional to determine the right size dehumidifier for your crawl space and specific needs.

4. What is the best dehumidifier for under house?

The best dehumidifier for under a house depends on the specific conditions of the space, such as the size of the area, the humidity level, and the amount of moisture present. According to our review, MIDEA Dehumidifier fits the place since it has the best coverage area, capacity, drainage system, energy efficiency, and durability features for your under house.

Ian Mutuli

About the author

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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