Best Dehumidifiers for Basements in 2021

Using a dehumidifier is the most efficient way to combat excess moisture in the air. Although it’s easy to control the humidity in a small room, basement dehumidification can be tricky because basements are spacious and often drafty.

However, with the right dehumidifier, you can reduce your basement’s humidity level and prevent damaging mold and mildew.

Basement Dehumidifier

This website is supported by readers. As an Amazon Associate we earn from qualifying purchases.

Dehumidifiers for the Basement | Bestseller

SaleBestseller No. 1
Aprilaire 1820 Pro Dehumidifier, 70 Pint...
REMOVES UP TO 9 GALLONS (70 pints) of water per day

Our Recommended Dehumidifiers for Basement in 2021

5) Black+Decker BDT50WT 50 Pint Energy Star Portable Dehumidifier

This white, boxy dehumidifier is a champ at moisture removal with its ability to extract 50 pints of water from the air on a daily basis. The Black+Decker BDT50WT 50 Pint Energy Star Portable Dehumidifier is also intelligent, featuring touch controls and a digitally displayed humidistat. With four casters and a pull-up handle, the machine is a breeze to move despite weighing 34 pounds.


From the well-organized control panel, you can select from among three fan speeds and view maintenance indicators for the filter and the water tank. You can even choose one of four modes, including a basement mode with a preset 45-percent relative humidity.

If you don’t want to run the dehumidifier all day, you can set a timer from 30 minutes to 24 hours.

With its 8.5-pint capacity, you won’t need to make frequent trips to the sink, and there is a vertical viewing window that lets you monitor the reservoir’s water level. Alternatively, you can attach a hose to the port for hands-free water drainage.

Thanks to the dehumidifier’s automatic shutoff, restart and defrost functions, you can count on the machine to last for years to come.

BLACK+DECKER BDT50WT 50 Pint Portable...
  • SMALL PORTABLE 50 PINT DEHUMIDIFIER: This powerhouse of a machine is capable of extracting up to 50 pints of...
  • ENGINEERED FOR THE MODERN HOME: Most dehumidifiers are bulky and are not very aesthetically pleasing. That’s...
  • SIMPLE TO USE: With a top mounted electronic control panel with LED display, adjust your ideal setting and sit...

4) hOmeLabs 3,000 Sq. Ft Energy Star Dehumidifier for Large Rooms and Basements

White, modern and efficient. Meet the 6 Gallon Dehumidifier by hOmeLabs. It can remove 50 pints of water from the air every day. Since the machine is Energy Star certified, it doesn’t cost a ton of money to run. The removable, 6-liter tank is easy to empty, and it features a viewing window that lets you instantly determine how much water is inside of the reservoir.

hOmeLabs Dehumidifier
hOmeLabs Dehumidifier

On the back of the unit, there is a sturdy cover that protects the reusable filter. A set of four double casters allows you to roll the 40-pound dehumidifier anywhere in your basement, and there are two integrated side handles that boost the machine’s mobility. If you don’t want to manually empty the tank, simply use the drain outlet in the rear of the dehumidifier.

Read our full in-depth hOmeLabs 6 Gallon (50 Pint) Dehumidifier Review

From the top-located touch panel, you can receive alerts when the dehumidifier is full or in defrost mode. Additionally, there is a digital display that shows the relative humidity of the room. If you’re dealing with an extremely high humidity problem, set the fan to turbo speed for fast dehumidification of spaces up to 2,500 square feet.

hOmeLabs 3,000 Sq. Ft Energy Star Dehumidifier for...
  • 3,000 sq ft Large Dehumidifier: Our dehumidifier removes up to 35 pints (50 Pint 2012 DOE Standard) of water...
  • Designed For The Modern Home: That most dehumidifiers are clunky eyesores is news to nobody. We designed with...
  • Super Easy To Use: Dehumidifiers don’t need to be complicated, so ours isn’t. Adjust to your ideal...

3) COLZER 164 Pints Commercial Dehumidifier

If you’re looking for the most powerful dehumidifier for basements, then the COLZER is definitely for you. This portable dehumidifier comes with the power to remove up to 164 pints (20.5 gallons) of moisture every day, or 90 pints at AHAM, in rooms of up to 7,000 square feet. It does so by suctioning in up to 206 CFM.

COLZER Commercial Dehumidifier
COLZER Commercial Dehumidifier

This dehumidifier comes with a 1.32-gallon tray to collect all of the re-condensed vapor. An auto-shutoff system ensures that the COLZER doesn’t continue dehumidifying your basement’s air when the collection reservoir is full. You’ll also get a 6.6-foot drain hose to move water to plants or a larger bucket (pump sold separately).

COLZER 164 Pints Commercial Dehumidifiers with...
  • 👍【164 PPD Dehumidifier】Up to 164 pints (20.5 gallons) moisture removal per day (90 PPD AHAM), this...
  • 👍【Fast Drying】This large room dehumidifier operates at a high airflow rate of 206 CFM for rapidly...
  • 👍【Effortless Humidity Control】This commercial dehumidifier featuring automatic humidistat will read the...

1) Waykar 2000 Sq. Ft Dehumidifier for Home and Basements

This Waykar Dehumidifier is a super-sleek device that would fit well into any modern home. Not only does it look great, but it works fantastically. This dehumidifier can capture up to 34 pints of water vapor every day in 2,000-square-foot rooms or smaller. A 24-hour timer will help ensure that you don’t over-humidify your basement or crawlspace.

Waykar Dehumidifier
Waykar Dehumidifier

The digital control panel allows you to define the ideal relative humidity level of a room, in which the dehumidifier will automatically shut off upon reaching that level. A 6.6-foot drain hose will let water pour out of the device and into potted plants or a nearby sink. However, it doesn’t have a built-in pump, so you’ll have to pay close attention to the unit’s placement.

Waykar 2000 Sq. Ft Dehumidifier for Home and...
  • Dehumidifier for Space Up to 2000 Sq. Ft: Our dehumidifiers are able to remove up to 34 pints (under...
  • Unique Design for The Modern Home: The Waykar dehumidifiers designed with sleek and modern look. With 360°...
  • Intelligent Control: After you set your desired humidity, the dehumidifier will run intelligently. Humidity...

2) ALORAIR Basement/Crawl Space Dehumidifier

The ALORAIR dehumidifier is the go-to dehumidifier for basements and crawl spaces. Despite its compact design, it’s a heavy-duty dehumidifier that captures and re-condenses up to 55 pints of water every day. Thanks to a built-in defrosting system, the ALORAIR can thaw its own chilling coils, allowing it to run for several hours without any hiccups.

ALORAIR Dehumidifier
ALORAIR Dehumidifier

As an Energy Star-certified product, you can rest assured that your electricity bills won’t spike due to constantly running this dehumidifier. With a built-in filter, the coils can stay cleaner for longer, while it also traps larger particles from going airborne. This tool is ideal for basements and other rooms of up to 1,300 square feet.

ALORAIR Basement/Crawl Space Dehumidifiers Removal...
  • Energy Star Certified Dehumidifier-quickly and effectively removes moisture with less energy than conventional...
  • Automatic Defrost-a quick and efficient defrosting process, truly makes the dehumidifier able to work at a low...
  • INTERNAL CORROSION PROTECTION-an advanced technology to minimize corrosion and freon leakage, as you know in...

Dehumidifier for the Basement Buying Guide

Prolonged high humidity can wreak havoc on your basement. However, a dehumidifier can prevent the damaging effects of humid conditions. To choose a dehumidifier that can handle the size of your basement, there are a number of features to consider, such as the reservoir’s capacity and the control panel’s configuration.

Aprilaire Crawl Space Dehumidifier

Let us point you in the right direction with this buying guide, so you can find a dehumidifier that can get the job done.

Water Removal

Since the sole purpose of a dehumidifier is to extract moisture from the air, the first feature to examine is how much water it can remove. Every manufacturer will list the amount of water a dehumidifier can draw from the air per day in the machine’s specs.

For efficient basement dehumidification, you’ll need a dehumidifier that can draw at least 20 pints of moisture from the air every 24 hours.

To adjust its water removal ability, you may be able to change the dehumidifier’s fan speed, keeping it on high when the humidity level is elevated and low when you simply need to maintain the current relative humidity.

Tank Capacity

Going hand-in-hand with a dehumidifier’s water-removal capability is its tank capacity. The more water the reservoir can hold, the less often you must empty the tank. Some models are equipped with a drainage port that continuously empties the collected water, and many dehumidifiers have a viewing window that lets you monitor the water level.

Best Dehumidifiers for Basements

Even though you may need your dehumidifier to run day and night, there will be times when you won’t be home to tend to the reservoir. That’s why it’s important to use a dehumidifier with an auto-shutoff mechanism.

This feature instantly turns off the machine when the tank is full to prevent water leaks and motor burnout. If you don’t want the dehumidifier to run constantly, choose one with a timer function.

Want to learn more? Read about the differences between a humidifier and a dehumidifier.

Control Panel

The layout of the control panel determines how easy it is to change the dehumidifier’s settings. Out of all the configurations, touch panels are the easiest and sleekest. However, your main objective should be to make sure that the controls are clearly labeled or illustrated.

Many models have a digital display that shows the room’s relative humidity as well as indicator lights that tell you when the dehumidifier needs maintenance.

Aprilaire Crawl Space Dehumidifier

Overall Size

It’s highly unlikely that the dehumidifier will remain stationary the entire time you own it, so choose one with a manageable weight. Usually, dehumidifiers have caster wheels and at least one handle to help you move them.

Look for double casters or wide-set wheels to achieve optimal mobility. Also, makes sure the dehumidifier can fit in the space where you want to keep it by looking at the appliance’s width, depth and height.

Filter Design

Almost every dehumidifier contains a filter that traps harmful particles like bacteria, mold spores and other allergens, so they won’t enter the air. However, not all filters are the same in terms of quality. Some of the best filters are constructed from an antimicrobial material, and those that are washable will save you money on replacements.


What Are the Signs of a Humid Basement?

A thorough check of your basement can reveal multiple signs of high moisture. Often, the first sign people notice is a musty odor in the air. This smell is caused by mold and mildew, which you may spot on the walls, ceilings or items you have stored in the basement.

Basement Dehumidifier

There may also be condensation built up on the floors, walls and windows. In bad cases, this condensation turns into full-fledged puddles. Paint bubbles and yellowed stains are two other signs.

If you have carpet in the basement, you may also see areas of the carpet with deteriorated fibers.

What Causes High Humidity in a Basement?

Even though every situation is unique, there are several common issues that cause a basement to become humid. Some problems originate from inside of the home, such as plumbing leaks. Poorly ventilated dryers and inoperable stove exhaust fans can also cause high humidity.

Other sources come from outside of the home. Cracks in the foundation are one way for moisture to enter a basement. Gutters that are clogged or ground that slopes toward the home are two other culprits.

If you tend to open your basement windows in the summer to feel a breeze, you’re also letting in humid air that can lead to condensation on the basement’s floor and walls.

What Are the Consequences of Having a Humid Basement?

Muggy air is unpleasant, but excess moisture in the air can lead to more problems than just discomfort. Dust mites, mildew and mold spores thrive in damp areas. If your basement is humid, these contaminants can spread throughout the air. In turn, this can cause respiratory issues, especially in those who suffer from allergies or asthma.

Mold and mildew can also do a number on your personal belongings. When mold grows on objects like books, blankets and furniture, they are usually damaged to the point where you have to toss them. Plus, moisture can cause the walls, foundation, beams and other structural components in your basement to rot, leading to expensive repairs.

Crawl Space Dehumidifier

How Do Dehumidifiers Work?

Dehumidifiers are hard-working machines. The typical dehumidifier pulls the air in a basement toward its inlet via a powerful fan. Then, the dehumidifier moves the air inside of it over the condenser coils, which glean moisture from the air.

After the moisture is dropped into the dehumidifier’s collection tank, the dried air is pushed into the basement where it circulates around the room. Over time, the basement’s humidity lowers to a healthier level.

How Does the Water Drain?

Each dehumidifier is different when it comes to the draining method implemented by the manufacturer. Some models have a removable reservoir that either lifts or pulls away from the machine. To dump the water, you simply carry the reservoir to the nearest sink.

Other dehumidifiers may have a removable reservoir and a drain port. All you have to do to take advantage of the drain port is attach a hose to the port and let it hang in a sink or next to a floor drain, and the dehumidifier will drain itself.

There are also dehumidifiers that contain a pump. These models can remove the water even if the hose is vertically placed.

How Much Energy Do They Consume?

The cost of electricity can be brutal during peak seasons. However, most dehumidifiers won’t make a noticeable difference in the average home’s electricity bill. To measure how much money it takes to use a dehumidifier, you can calculate the kilowatts per hour it consumes. If you plan to run it all day and night, multiply 24 and the dehumidifier’s wattage. Then, divide the number you get by 1,000.

How Can I Determine a Dehumidifier’s Effectiveness?

Luckily, there is no math involved in figuring out how effective a dehumidifier is at removing moisture from the air. Manufacturers almost always list a dehumidifier’s moisture removal capacity in the product’s specs. The amount of water it removes is calculated in one of two ways.

Operating a Aprilair Crawl Space Dehumidifier

One way is by calculating how much water the dehumidifier removes when the relative humidity is at 60 percent and the air temperature is at 80 degrees, which are the conditions used by the AHAM, or Association of Home Appliance Manufacturers.

The other way involves measuring how much water the machine can draw from the air when the relative humidity is at 100 percent. This calculation method tells you the dehumidifier’s water removal limit.

Since it’s highly unlikely your basement is that humid, the dehumidifier should be able to perform better than what this rating shows as long as the machine is sized correctly for the space.

Dehumidifiers for the Basement | Bestseller

SaleBestseller No. 1
Aprilaire 1820 Pro Dehumidifier, 70 Pint...
REMOVES UP TO 9 GALLONS (70 pints) of water per day

This website is supported by readers. As an Amazon Associate we earn from qualifying purchases.

If you have any questions or comments, please add them below in the comment section. Similarly, please let us know if you spot any mistakes or omissions. Thanks!

Last update on 2021-04-16 / Most affiliate links and/or Images from Amazon Product Advertising API

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.