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10 Best Dehumidifier For Crawl Space 2025 in the United States

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Our Top Picks

#1

Winner

ALORAIR Basement/Crawlspace Dehumidifiers 198 PPD (Saturation), 90 Pints (AHAM), Condensate Pump, Auto Defrosting, Rare Earth Alloy Tube Evaporator

Rating
10.0
Chosen by1,306
Capacity
Drainage Options
Noise Level

Most important from
584 reviews

Capacity
The unit is solid and heavy, but its performance justifies the size, effectively removing moisture without requiring frequent emptying.
Drainage Options
Using the pump feature to drain water outside is a convenient option, making the unit easy to set up and maintain.
Noise Level
It's quiet enough that it doesn't disrupt conversations or TV watching, even with the crawlspace directly below the living area.
Built-in Humidistat
This dehumidifier is a real workhorse, consistently maintaining perfect humidity levels over months of continuous use.

The ALORAIR Basement/Crawlspace Dehumidifier is a powerful and energy-efficient unit designed to remove up to 90 pints of moisture per day under AHAM conditions or 198 pints at saturation. It is capable of covering areas up to 2,600 square feet, making it suitable for large basements, crawl spaces, storage areas, garages, or commercial use.

One of its standout features is the heavy-duty condensate pump that ensures smooth operation by continuously removing collected water, which is ideal for managing high moisture levels. Additionally, the automatic defrost system helps maintain the unit’s efficiency, particularly in colder conditions, by preventing frost build-up.

This model is Energy Star certified, which means it is designed to consume less energy and save on electricity bills, potentially saving up to $250 per year in energy costs. The built-in humidistat allows for consistent humidity control, contributing to a comfortable environment. The product also comes with a 5-year limited warranty and professional customer support, adding to its reliability. This dehumidifier is ideal for those seeking a robust, energy-efficient solution for large, damp spaces.

Rating
10.0
Chosen by1,306
Capacity
Drainage Options
Noise Level

Most important from
584 reviews

Capacity
The unit is solid and heavy, but its performance justifies the size, effectively removing moisture without requiring frequent emptying.
Drainage Options
Using the pump feature to drain water outside is a convenient option, making the unit easy to set up and maintain.
Noise Level
It's quiet enough that it doesn't disrupt conversations or TV watching, even with the crawlspace directly below the living area.
Built-in Humidistat
This dehumidifier is a real workhorse, consistently maintaining perfect humidity levels over months of continuous use.
#2

AprilAire E080 Pro 80-Pint Whole-House Dehumidifier, Energy Star Certified, Commercial-Grade Whole-Home Dehumidifier for Basement, Crawlspace, or Whole House up to 4,400 sq. ft.

Rating
10.0
Coverage Area
Energy Efficiency
Noise Level

Most important from
248 reviews

Coverage Area
Installed in a 3300 sq./ft. home, the dehumidifier quickly brought the humidity down to a target level within 24 hours, ensuring stable conditions for new hardwood flooring.
Energy Efficiency
The unit is extremely quiet and power efficient, making a noticeable difference in comfort levels within just two days of use.
Noise Level
The unit is extremely quiet and power efficient, making a noticeable difference in comfort levels within just two days of use.

The AprilAire E080 Pro 80-Pint Whole-House Dehumidifier is a solid choice for homeowners looking to manage humidity in crawl spaces or basements. With a capacity to remove up to 80 pints of moisture per day, it effectively covers areas up to 4,400 square feet, making it suitable for substantial spaces. One of its key strengths is its Energy Star certification, which ensures energy efficiency, potentially lowering your utility bills while being environmentally friendly.

Another highlight is the 'Set and Forget' feature, utilizing smart sensing technology to automatically activate the dehumidification process when humidity levels exceed your preferred settings. This modern approach takes the hassle out of manual adjustments. Additionally, it offers convenient drainage options; rather than emptying a water tray, you can easily set it up for continuous draining through a hose or floor drain.

On the durability front, the dehumidifier is built with corrosion-resistant aluminum coils, promising longevity in challenging environments like damp basements or crawl spaces. The inclusion of a washable MERV 8 filter adds an extra layer of convenience, allowing for easy maintenance. However, this unit comes with a single speed, which might not cater to all individual needs. For spaces with fluctuating humidity levels, a model with variable speeds could be preferred. Additionally, while its noise level is not specified, some users may find commercial-grade models to be louder than residential options, so it’s worth considering how sound might impact your living space.

Rating
10.0
Coverage Area
Energy Efficiency
Noise Level

Most important from
248 reviews

Coverage Area
Installed in a 3300 sq./ft. home, the dehumidifier quickly brought the humidity down to a target level within 24 hours, ensuring stable conditions for new hardwood flooring.
Energy Efficiency
The unit is extremely quiet and power efficient, making a noticeable difference in comfort levels within just two days of use.
Noise Level
The unit is extremely quiet and power efficient, making a noticeable difference in comfort levels within just two days of use.
#3

ALORAIR Crawl Space Dehumidifiers 120 PPD Moisture Removal, Crawlspace Dehumidifiers Commercial Dehumidifier for Basement, Auto Defrost, cETL Listed

Rating
9.9
Capacity
Coverage Area
Energy Efficiency

Most important from
1200 reviews

Capacity
The dehumidifier runs constantly and removes about 7 gallons of water daily, proving its high capacity.
Coverage Area
This dehumidifier has transformed the crawlspace, eliminating moisture, musty smells, and mold concerns.
Energy Efficiency
Energy Star certification means it works efficiently without a significant impact on electricity bills.
Noise Level
The noise level is very tolerable, barely noticeable even in a quiet house.
Built-in Humidistat
This unit is a workhorse, effectively reducing humidity levels from 70% to 50% within weeks.

The ALORAIR Crawl Space Dehumidifier is a high-capacity unit designed for areas up to 1,300 sq. ft., making it suitable for basements, crawl spaces, storage areas, and even commercial use. It boasts an impressive moisture removal capacity of 120 pints per day at saturation, which is great for handling high humidity levels. One standout feature is its energy efficiency, being Energy Star certified, which helps in reducing electricity bills. The automatic defrost feature is particularly useful for maintaining performance in low temperatures by preventing frost buildup on the coils, thereby extending the unit's lifespan. Additionally, the internal corrosion protection helps prevent freon leakage, ensuring durability and reliable operation over time.

The inclusion of a MERV-1 filter contributes to better air quality by trapping larger particles. The dehumidifier operates at a moderate noise level, making it manageable in residential settings. However, some users might find it relatively heavy at 44 pounds, which could make installation and relocation challenging. The built-in humidistat allows for precise humidity control, enhancing user convenience. Another advantage is the 5-year limited warranty, which offers peace of mind and support.

While it includes continuous drainage options, it might require additional setup for those unfamiliar with such systems. The ALORAIR Crawl Space Dehumidifier is a robust and efficient choice for those needing high-capacity moisture removal in larger spaces, with some considerations for weight and drainage setup.

Rating
9.9
Capacity
Coverage Area
Energy Efficiency

Most important from
1200 reviews

Capacity
The dehumidifier runs constantly and removes about 7 gallons of water daily, proving its high capacity.
Coverage Area
This dehumidifier has transformed the crawlspace, eliminating moisture, musty smells, and mold concerns.
Energy Efficiency
Energy Star certification means it works efficiently without a significant impact on electricity bills.
Noise Level
The noise level is very tolerable, barely noticeable even in a quiet house.
Built-in Humidistat
This unit is a workhorse, effectively reducing humidity levels from 70% to 50% within weeks.

Buying Guide for the Best Dehumidifier For Crawl Space

Choosing the right dehumidifier for your crawl space is essential to maintain a healthy and comfortable environment in your home. A dehumidifier helps to reduce excess moisture, which can prevent mold growth, structural damage, and improve air quality. When selecting a dehumidifier, it's important to consider several key specifications to ensure you get the best fit for your needs.
CapacityCapacity refers to the amount of moisture a dehumidifier can remove from the air in a 24-hour period, usually measured in pints. This spec is important because it determines how effective the dehumidifier will be in controlling humidity levels in your crawl space. For small to medium-sized crawl spaces, a dehumidifier with a capacity of 20-30 pints may be sufficient. For larger or more humid areas, you might need a unit with a capacity of 50 pints or more. Assess the size and humidity level of your crawl space to choose the right capacity.
Coverage AreaCoverage area indicates the maximum square footage that the dehumidifier can effectively manage. This is crucial because using a dehumidifier with insufficient coverage can lead to inadequate moisture control. Dehumidifiers typically specify their coverage area in square feet. For a small crawl space, a unit covering up to 1,000 square feet might be adequate. For larger spaces, look for models that can cover 2,000 square feet or more. Measure your crawl space to determine the appropriate coverage area needed.
Energy EfficiencyEnergy efficiency measures how much energy the dehumidifier uses to remove moisture from the air. This is important for keeping your energy bills low and reducing environmental impact. Energy-efficient models often have an Energy Star rating. When comparing dehumidifiers, look for those with higher energy efficiency ratings, as they will consume less power while providing the same level of performance. Consider your usage frequency and energy costs to select a model that balances efficiency and effectiveness.
Drainage OptionsDrainage options refer to how the dehumidifier disposes of the collected water. This is important for convenience and maintenance. There are typically two main types: manual and continuous drainage. Manual drainage requires you to empty the water tank regularly, which can be cumbersome for high-capacity units. Continuous drainage uses a hose to direct water to a drain or sump pump, allowing for hassle-free operation. If you prefer low maintenance, opt for a model with a continuous drainage option. Consider the availability of a nearby drain or sump pump in your crawl space.
Noise LevelNoise level indicates how loud the dehumidifier operates, usually measured in decibels (dB). This is important if your crawl space is near living areas, as a noisy unit can be disruptive. Dehumidifiers with lower noise levels (around 50 dB or less) are generally quieter and more suitable for residential use. If noise is a concern, look for models specifically designed to operate quietly. Consider the proximity of your crawl space to living areas and your sensitivity to noise when choosing a dehumidifier.
Built-in HumidistatA built-in humidistat allows the dehumidifier to automatically monitor and maintain the desired humidity level. This is important for ensuring consistent moisture control without manual adjustments. Dehumidifiers with a built-in humidistat can turn on and off as needed to maintain the set humidity level, providing convenience and energy savings. If you want a set-and-forget solution, choose a model with this feature. Consider your preferred humidity level and the ease of use when selecting a dehumidifier with a built-in humidistat.

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