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The Best Crawl Space Dehumidifiers

AlorAir dehumidifier (Photo from Amazon)

Crawl spaces might not be the most glamorous part of your home, but they’re important for maintaining a healthy living environment. Left unchecked, they can turn into moldy, mildewy, pest-ridden zones, due to all that dampness. This could go a long way in causing structural damage and also health problems. 

How do you keep it dry and safe? One simple gadget: a crawl space dehumidifier. This handy device helps you manage humidity levels, protecting your home from unwanted moisture and the problems that come with it.

Stay with us as we provide a review of some of the best crawl space dehumidifiers that can make your space moisture-free and protect it.

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1

Best Versatile

Best Versatile
Washable Filter, Auto Defrost, Memory Starting, Remote Monitoring, 5 Years Warranty
from Amazon May be out of stock
ColorBlue – Black
Tank CapacityN/A
Dimensions21.2″D x 15.5″W x 13.9″H
Weight54.9 lbs
Wattage500 watts
Dehumidification Capacity
The amount of moisture a dehumidifier can remove from the air in a day, typically measured in pints.
16 ounces per day
Sound Level36 dB(A)
Coverage Areas4500 square feet
Buy if…
  • you need a versatile dehumidifier.
  • you want one with both a drain hose and a water tank.
  • you prefer a quiet dehumidifier.
  • you’re on a budget.
Don’t buy if…
  • water leakage is a big concern to you.
  • you need a bigger water tank.
One of the most impressive features of the SAHAUHY dehumidifier is its remarkable capacity to remove up to 158 pints of moisture per day at 95°F and 90% relative humidity
The percentage of moisture in the air relative to the maximum amount the air can hold at that temperature.
.
This makes it ideal for spaces up to 4500 square feet, such as crawl spaces, basements, warehouses, storage areas, and shops. For the best basement dehumidifiers, check out our article specifically made for dehumidifiers suited for basement use.

The variable humidity settings range from 90% to 10%, offering the flexibility needed to maintain ideal conditions in any environment.

But what really tops off this product is the overflow protection system: it is an auto-stop and an alarming feature that will alert you of a holding tank that is nearly full, ensuring extra prevention of water damage. This way, the user is assured that an overflow problem will not occur.

Another excellent feature is the fact that it can begin running after a power outage.

If there was a power cut, then once there is a power supply, the dehumidifier automatically restarts on the previous settings and you can resume keeping your desired humidity without setting it time and again. So convenient and user-friendly.

Additionally, the new dehumidifier features a very low-noise design and works at 36 dB(A) or less. This particularly works to the benefit of those who live directly above or next to the crawl space.

Sahauhy Crawl Space Dehumidifier Reviews

  • Ease of use: Installation is straightforward, and the remote control allows users to check humidity from an upper level without going to the crawlspace. All unit functions, including an audible beep, are on the remote.
  • Performance and maintenance: The unit is quiet and maintains low humidity settings well. However, a user reported that the drain tube rusted and leaked onto the floor less than a year after purchase.
  • Warranty: Overall, the purchase experience is positive. Delivery is efficient, the unit works well, and warranty registration is simple with helpful support available.
  • Packaging: Some customers have reported issues with poor packaging or shipping, resulting in ripped wires or broken parts.
2

Best Design

Best Design
Industry, Water Damage Unit, Memory Starting, Auto Defrost Crawlspaces Dehumidifier
from Amazon May be out of stock
ColorWhite
Tank Capacity120 Pints
Dimensions19.2″D x 12.2″W x 13.3″H
Weight44 lbs
Wattage40 watts
Dehumidification Capacity 55 Pints per Day
Sound Level52 dB(A)
Coverage Areas1300 Square Feet
Buy if…
  • you want one that consumes little energy
  • you prefer one with an auto-defrost option
  • you prefer a portable unit
  • you need a quiet unit
Don’t buy if…
  • you need it to cover a bigger space
  • you want one with a built-in moisture container

Capable of removing up to 120 pints of moisture daily at saturation and 55 pints per day under AHAM conditions, this unit is perfect for areas up to 1,300 square feet.

It is ideal for crawl spaces, basements, storage areas, garages, large rooms, and commercial spaces.

Designed with the modern consumer in mind, the ALORAIR dehumidifier includes features such as an auto defrosting
A feature that automatically removes ice buildup from the coils of the dehumidifier.
system, optional remote control, MERV-1 filter, low-temperature operation, and is C-ETL listed for electrical safety.

It has adjustable feet for easy leveling and a duct connection for venting exhaust outdoors. Weighing just 44 pounds, it is portable and suitable for homes with multiple or limited-access crawl spaces.

The automatic defrost feature allows the dehumidifier to operate efficiently at low temperatures, as low as 36 degrees Fahrenheit. When frost is detected on the coils, the unit initiates an automatic defrost cycle to prevent frost buildup, ensuring continuous operation without periodic stops.

The Energy Star certification ensures efficient moisture removal while using less energy, helping to reduce energy bills and making it an environmentally friendly choice.

Advanced internal corrosion protection technology minimizes corrosion and freon leakage, extending the life of the coils and maintaining heat transferability.

AlorAir Crawl Spaces Dehumidifier Reviews

  • Pros and performance: Users highlight several pros including a very low noise level, ease of setup, and quick moisture removal. For example, it reduces humidity from 65% to under 50% within a day when used in a basement.
  • Design: The dehumidifier lacks a built-in moisture container, requiring it to be close to a drain. Additionally, the discharge tube is gravity-fed, so the unit must be positioned higher than the drain or container.
  • Customer support: Overall, users are satisfied with the purchase and the customer support. They appreciate the efficient delivery, the unit’s performance, and the straightforward warranty registration process.
3

Best for Large Spaces

Best for Large Spaces
Industry Water Damage Unit, Large Capacity, Compact, Portable, Auto Defrost, Memory Starting
from Amazon May be out of stock
ColorGray
Tank Capacity70 Pints
Dimensions12.5″D x 25″W x 12.5″H
Weight56 lbs
WattageN/A
Dehumidification Capacity 70 pints per Day
Sound LevelN/A
Coverage Areas2200 Square Feet
Buy if…
  • you want ease of use.
  • you appreciate quick results
  • You prefer low maintenance
Don’t buy if…
  • you’re on a tight budget
  • you’re looing for a portable unit
  • you have a small space

The Moiswell M145 dehumidifier, with its sleek and compact design of 22.51414.7 inches, fits well in tight spaces. Whether on the floor or hanging overhead, it improves air quality and helps reduce humidity levels within confined spaces. 

This Energy Star-rated dehumidifier operates at 265 CFM and can remove up to 145 pints of moisture per day, making it suitable for large rooms up to 6,000 square feet. It is easy to use: just plug it in, set your desired humidity level, and let it cycle automatically. 

It features a 24-hour timer, auto-drain, auto-defrost, and auto-restart after power outages. Backed by a 5-year limited warranty, the Moiswell M145 ensures quality and reliability.

Moiswell Commercial Dehumidifier Reviews

  • Quiet and efficient performance: This dehumidifier is incredibly quiet and works quickly, reducing humidity in a crawlspace from 66% to 53% in just a few minutes. Users appreciate how it rapidly removes moisture and eliminates damp odors from the home.
  • Convenient design: The model without a pump is convenient for those who install their own drain. The display is clear, and the controls are easy to use.
4

Most User-Friendly

Most User-Friendly
70-Pint Crawl Space Dehumidifier with Drain Hose, Commercial-Grade Whole-House Dehumidifier for Crawlspace, Basement, or Whole Home up to 2,200 sq. ft.
from Amazon May be out of stock
ColorGray
Tank Capacity70 Pints
Dimensions12.5″D x 25″W x 12.5″H
Weight56 lbs
WattageN/A
Dehumidification Capacity 70 pints per Day
Sound LevelN/A
Coverage Areas2200 Square Feet
Buy if…
  • you want a budget-friendly option
  • you want it for large spaces
  • you want one with easy maintenance
Don’t buy if…
  • you live in a cold climate
  • you need a full unit warranty, not just parts.

The AprilAire E070 dehumidifier is designed for those people living in highly humid areas and in homes, especially within older waterfront houses. 

Immediately upon powering the unit, the water begins to drain, running clear through the drain pipe provided, within minutes. 

The AprilAire E070 does its work fast, with an evident reduction in humidity. The 10% drop that was instantly recorded happened in just a couple of hours of operation. 

The unit has been designed to operate with great ease and efficiency. Dehumidify up to 70 pints of water per day. Ideal for sealed crawl spaces or basements. Front-mounted control and leveling feet allow hassle-free access and setup in different locations. 

Interactive display. Therefore, it is user-friendly, with easier setup and day-to-day operation. Maintenance is also very simple. There is no water tray to empty or mess with, and the filter only needs to be cleaned or replaced once a year.

It is electrically rated to operate on a power source of 110-120 VAC single-phase 60 Hz but not on 50 Hz. 

The AprilAire E070 PRO is a compact yet powerful in-duct dehumidifier designed to manage relative humidity for tight-sealed homes up to 2,200 square feet. All this can, however, be mounted either hanging or standing on flat ground. 

To sum it all up, the AprilAire E070 is an excellent dehumidifier for crawl spaces. It is quite strong, but easy to install and doesn’t require much maintenance. 

This dehumidifier will ensure your space is always dry, without any other issue with dampness. 

If you wish to take control of the air quality in your home and protect it from damage due to moisture, the AprilAire E070 is a wise purchase.

AprilAire Crawl Space Dehumidifier Reviews

  • Easy installation: Users find the installation process straightforward, often positioning the dehumidifier on top of an air handler in the attic and tapping into the AC drain pipe for condensation drainage. Flushing the pipe first is recommended to ensure proper draining and flow.
  • Cost-effectiveness: The AprilAire E070 offers substantial financial savings. While professional quotes for similar setups can reach up to $5,000, users report an all-in cost of around $1,300 for this system, including installation and additional materials.
5

Most Useful Features

Most Useful Features
198 PPD (Saturation), 90 Pints (AHAM), 5 Years Warranty, Condensate Pump, Auto Defrosting, Rare Earth Alloy Tube Evaporator, Remote Control
from Amazon May be out of stock
ColorWhite
Tank Capacity198 Pints
Dimensions23.5″D x 15.2″W x 17.7″H
Weight70.5 lbs
Wattage639.4 Watt-hours
Dehumidification Capacity 90 Pints per Day
Sound LevelN/A
Coverage Areas1300 square feet
Buy if…
  • you want a reliable, efficient dehumidifier
  • you need it for a large crawl space
  • you want one with a big tank to avoid frequent emptying.
Don’t buy if…
  • you want a more compact unit
  • you need one that consumes less energy
The Energy Star
Indicates the appliance meets energy efficiency guidelines set by the Environmental Protection Agency (EPA).
certified dehumidifier is highly efficient, removing moisture quickly while using less energy. This saves money on energy bills. 

It covers up to 1,300 sq. ft. and removes up to 55 pints per day (120 pints at saturation), making it perfect for basements, crawl spaces, storage areas, or commercial use.

Setting it up is easy, and it operates with very low noise. In one day, it can reduce humidity from 65% to under 50%. The automatic defrost system allows it to work efficiently at low temperatures (down to 36°F), preventing frost build-up and ensuring continuous operation.

Internal corrosion protection minimizes corrosion and freon leakage, extending the life of the coils. Designed with the modern home in mind, it features an optional remote control, MERV-1 filter, low-temperature operation, and is C-ETL listed.

Keep in mind, it doesn’t have a built-in moisture container. You’ll need to place it near a drain, with the discharge tube gravity-fed, so it should be higher than the drain or container.

Backed by a 5-year warranty and professional customer support, this dehumidifier promises reliability and peace of mind.

AlorAir 90-Pint Crawl Space Dehumidifier Reviews

  • Effective performance: This dehumidifier performs as described, effectively reducing humidity in an unfinished basement from 80% or higher to around 45%. The difference is noticeable even in the upstairs living space, making it more comfortable.
  • Weight: The unit is very heavy, weighing 70 lbs, and requires two men for delivery and considerable effort to move to the basement. Installing it in a crawl space would be particularly challenging due to its weight.
  • Package: Despite its heaviness, the dehumidifier was well-packed and received without any damage.
6

Most Power-Efficient

Most Power-Efficient
70 Pint Commercial Dehumidifiers with Pump & Hose | Up to 1000 Sq Ft | Compact & Portable | Auto Defrost | Energy Star | GLGR Technology | 5 Years Support
from Amazon May be out of stock
ColorGray
Tank Capacity70 Pints
Dimensions15.35″D x 11.2″W x 11.4″H
Weight47.2 lbs
Wattage331 watts
Dehumidification Capacity 70 Pints per Day
Sound Level<50 dBA
Coverage Areas1000 square feet
Buy if…
  • you need a compact crawl space dehumidifier
  • you want a unit with low energy consumption
Don’t buy if…
  • you want one with a simpler operation
  • leakage is a big concern to you

The Energy Star certified crawl space dehumidifier is a real powerhouse, sucking up to 70 pints of moisture daily and covering a whopping 1000 sq. ft. 

That’s 35% better than your average dehumidifier! Perfect for basements, crawlspaces, and industrial spaces, it saves energy and money—what a combo!

With a built-in humidity sensor and digital control panel, this bad boy makes setting your ideal humidity a breeze. It cycles on and off automatically, handles draining by itself, and even defrosts when needed.

Power outage? No problem—it restarts on its own. Talk about low maintenance!

Built with heavy-duty sheet metal, this dehumidifier is tough enough for harsh conditions. It operates down to 36°F, perfect for chilly basements and job sites. The built-in pump
A feature that allows the dehumidifier to automatically pump out the collected water.
takes care of drainage effortlessly, with a 19.6ft hose for flexibility.

BaseAire Crawl Space Dehumidifier Reviews

  • Initial performance: Customer reports indicate that the BaseAir dehumidifier performs well initially. It includes a built-in pump that effectively pushes the drain line up five feet to a drain. The unit is much quieter than smaller consumer units and is effective at reducing humidity.
  • Reliability issues: Despite its initial performance, the dehumidifier has reliability issues. A temperature sensor-probe failed after three months.
  • Customer service: BaseAir’s excellent customer service provided a quick replacement for the failed sensor-probe and clear instructions for installation.
  • Efficient and quiet operation: The built-in pump effectively drains water through a hose periodically, and the unit operates quietly compared to smaller consumer models.

Crawl Space Dehumidifier Reviews

Crawl space dehumidifiers have received significant attention from users who appreciate their ability to control humidity and improve air quality in damp, enclosed areas.

Based on crawl space dehumidifier reviews, the common benefits highlighted by users include mold prevention, pest control, and better overall home comfort.

People love how these dehumidifiers prevent mold growth, which not only protects their health but also preserves the structural integrity of their homes.

Users frequently mention that managing humidity with the best crawl space dehumidifiers reduces musty odors and deters pests like termites and cockroaches, making their homes safer and more comfortable.

Overall, the sentiment from crawl space dehumidifier reviews is overwhelmingly positive. Users often describe how these devices have made a noticeable difference in their living environments, leading to improved air quality and fewer allergy issues.

This solid user satisfaction stems from the consistent and effective moisture control these dehumidifiers offer, ensuring homes stay dry and healthy.

What You Should Consider Before Purchase

When considering purchasing one of the best crawl space dehumidifiers, here are four key factors to keep in mind:

Size and coverage: Ensure the dehumidifier can effectively cover the square footage of your crawl space. A unit that’s too small may struggle to manage moisture, while an oversized one could waste energy.

Humidity levels: Choose a dehumidifier based on the specific humidity levels of your area. Higher humidity may require a more powerful unit that can handle excessive moisture consistently.

Energy efficiency: Look for features like auto-shutoff or built-in humidistats to help maintain humidity levels without inflating your energy bills. Energy-efficient models can provide long-term savings.

Maintenance requirements: Consider how easy it is to maintain the dehumidifier. Some units require frequent cleaning or filter changes, so it’s important to choose one that aligns with your maintenance preferences.

These factors will guide you in selecting the best crawl space dehumidifier for your specific needs.

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