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Best Overall
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Runner-Up
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Best Heavy Duty
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Budget Option
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4.6
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4.5
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4.4
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4.4
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$648.66
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$119.99
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A dehumidifier in the basement can improve the air quality if it’s damp and musty. They remove excess moisture from the air and maintain optimal humidity levels to keep your basement dry and mold free. Here are our expert picks for the best basement dehumidifier.
Learn about how we rate the best basement dehumidifiers.
Our Top Picks for Best Basement Dehumidifier
If you want to control the damp, moldy, or musty smell in your basement or replace your dehumidifier, check out our expert recommendations.
The cost of dehumidifier for basement can range from $100 to $1,500 or more, depending on how much moisture per day it can remove from the air.
Finished vs. Unfinished Basement
If you have a finished basement, your HVAC system removes excess moisture from the air. Conditioned basements will often have low or medium humidity. When air conditioning is off, use a portable dehumidifier to control humidity.
Portable dehumidifiers have a collection bucket to empty or drain hose to a nearby sink. Since a finished basement is easy to get into, this chore isn’t too hard. You can move it out of the way when you have guests.
These portable units don’t work well in unfinished basements because of the harsh conditions.
An unfinished basement does not have a heating or cooling system. These spaces are usually humid and need a strong dehumidifier designed for commercial use. Commercial dehumidifiers need to drain moisture either into a floor drain or a condensate pump leading outside.
The Best Portable Dehumidifier for Basements
These dehumidifiers control low to medium humidity levels in finished areas. Check out the high-humidity dehumidifiers by Aprilaire and Alorair below for unfinished basements.
Vellgoo 52 Pint Dehumidifier for Basement
Our pick for best dehumidifiers for basements is the Vellgoo 52-pint dehumidifier. Here’s the review.
Specifications:
- Floor Area Coverage: 4,500 Square Feet
- Special Features:
- Digital Controls
- Adjustable Humidity Control
- Automatic Moisture Removal
- Automatic Shutoff
- Continuous Draining
- Timer
- Washable Filter
- Automatic Defrost
- Bucket Capacity: 1.4 Gallons
- Tank Volume: 1.4 Gallons
- Product Dimensions: 14.38″D x 8.64″W x 24.09″H
- Item Weight: 35 Pounds
- Material: Acrylonitrile Butadiene Styrene (ABS)
- Operation Mode: Continuous, Comfort, Custom
- Air Flow Capacity: 8829 CFPH (Cubic Feet Per Hour)
- Dehumidification Capacity: 52 Pints per Day
User Experience:
When I received the Vellgoo dehumidifier, its sleek, white design impressed me. The setup was straightforward, and within minutes, the device was operational. The digital display showed humidity levels. I could adjust the humidity to fit my needs.
Specific Situations:
- The Vellgoo dehumidifier kept the basement comfortable when it was humid. The device doesn’t need constant monitoring because it removes moisture and shuts off.
- During the rainy season, I could attach the drainage hose and let the dehumidifier run.
- I noticed my energy bills were lower, thanks to the device’s Energy Star efficiency. It played a big role in my decision to buy it.
Additional Observations:
The ergonomic, comfortable handle and the fact that the unit was portable meant I could move it to different rooms if needed. The unit felt strong because of the ABS material. The filter was washable, which made it easy to clean and saved money.
Our Verdict:
The Vellgoo dehumidifier large basement model is reliable and effective at managing humidity. The product stands out because it has many useful features. This dehumidifier can remove up to 52 pints of moisture per day.
It works well in big spaces and tough conditions. The design is thoughtful. It has a removable tank and washable filter, making it convenient. I recommend this dehumidifier for large spaces with high humidity. It’s a robust, efficient, and reliable dehumidifier that delivers on its promises.
hOmeLabs 3,000 SF Energy Star-Certified Dehumidifier
Specifications:
- Floor Area Coverage: 3000 Square Feet
- Special Features: Sleep Timer, Auto Shut-Off & Restart, Hidden Wheels, Digital Controls
- Bucket Capacity: 1.6 Gallons
- Tank Size: 1.8 Gallons
- Product Dimensions: 11″D x 15.4″W x 24.3″H
- Item Weight: 40 Pounds
- Material: Plastic
- Wattage: 1200 watts
- Operation Mode: Continuous
- Air Flow Capacity: 1 Gallon per Minute
- Dehumidification Capacity: 35 Pints per Day
Unique Insights:
The hOmeLabs dehumidifier is energy-efficient, which is important in today’s eco-conscious market. The device has a sleek white design that blends well with any room decor. It’s one of the quietest dehumidifiers, making it suitable for bedrooms or offices.
User Experience:
From the moment I unboxed the dehumidifier, the setup was intuitive. The user manual was clear, and the removable water tank made it easy to start using the device right away.
I could adjust the dehumidification rate with two-speed settings based on humidity levels. The auto shut-off feature ensured the device wouldn’t overwork.
The hidden wheels are a nice touch, making moving the dehumidifier easy.
Specific Situations:
The device worked well in a humid basement. The humidity stayed comfortable, and there was no musty smell in those places. The continuous drain feature proved very helpful as it reduced the frequency of tank emptying.
Additional Observations:
The defrost function is helpful in colder areas where condensation can freeze and harm other dehumidifiers. The hOmeLabs model handled this, ensuring continuous operation regardless of the temperature.
Our Verdict:
The hOmeLabs dehumidifier is a strong and dependable device that does what it says it will do. It’s well-suited for large spaces and operates without raising the energy bill.
The thoughtful design and user-friendly features make it a top contender. I recommend this dehumidifier to anyone who wants to improve air quality. It performs well, is easy to use, and customers love it.
They offer other sizes, like the hOmelabs 50-pint dehumidifier.
For more, see our list of the best whole house dehumidifiers.
Midea Cube 35 Pint Smart Dehumidifier
Specifications:
- Floor Area Coverage: Up to 3500 Square Feet
- Special Features: Smartphone compatible with Midea Cube Air app for real-time monitoring and full-water tank alerts, Digital Controls
- Tank Size 35 Pints
- Product Dimensions: 14″D x 15″W x 15″H
- Item Weight: 41 Pounds
- Material: Plastic
- Wattage: 314 watts
- Operation Mode: Continuous
- Air Flow Capacity: 188 cc/min
- Dehumidification Capacity: 35 Pints per Day
User Experience:
From the moment I unboxed the Midea Cube, I was impressed by its compact and modern design. The plastic material feels strong and tough despite being lightweight for its size. Setting up the device was effortless. It did not need any assembly, and the drainage hose was a convenient addition for continuous drainage.
Specific Situations:
- We tested the smart dehumidifier in a basement area prone to dampness during high humidity. It works well, keeping the humidity comfortable and stopping the damp smell of basements.
- I used it in a larger space, around 3400 square feet. It kept the humidity level consistent throughout the whole area.
- The Midea Cube Air app was a game-changer. I can check the dehumidifier while away, especially with the full-water alerts.
Additional Observations:
The continuous operation mode meant I could leave it running without frequent check-ins. The noise level was acceptable; it was not whisper-quiet but not disruptive. The airflow was good, and the unit didn’t get too hot, even after running for a long time.
Our Verdict:
The Midea dehumidifier is a robust and reliable appliance. The product is great for big spaces. Its smart features make it easy to use. The energy usage is good for its size, and it runs and works well. This dehumidifier is a good choice if you have a problem with humidity or want to prevent moisture-related problems. The rating is 4.3 stars, based on over 2,000 reviews.
You can also get a smaller 20-pint version that covers 1,500 square feet or a larger 50-pint cube dehumidifier that covers 4,500 square feet.
VEAGASO 30 Pint Dehumidifier for Basements
Specifications:
- Floor Area Coverage: 2500 Square Feet
- Special Features: Adjustable Humidity Digital Control Panel, Durable Caster Wheels, Timer, Continuous/Manual Draining, Ergonomic Handle
- Capacity: 30 Pints
- Tank Volume: Not specified, but the unit includes a removable water tank and drain hose for continuous operation.
- Product Dimensions: 6″D x 5″W x 10″H
- Item Weight: 23.2 pounds (10.56 Kilograms)
- Material: Plastic.
- Operation Mode: Continuous, Dry, Dehumidify
- Air Flow Capacity: 30 Pints (equivalent to the dehumidification capacity)
- Dehumidification Capacity: 30 Pints per Day
User Experience:
As soon as I opened the VEAGASO dehumidifier, I was impressed by how small and stylish it looked. It’s lightweight enough to move from room to room, thanks to the ergonomic handle and durable caster wheels. I could set the humidity level, and the device kept it steady. It was amazing.
Specific Situations:
The VEAGASO worked in a big, damp basement. It pulled moisture from the air to keep the environment dry and comfortable. I could set the dehumidifier’s timer to run during off-peak hours, saving energy costs. The continuous draining option saved me in this humid place. I didn’t need to empty the tank every day.
Additional Observations:
I like the two fan speeds. It made it quieter at night. The unit didn’t generate much heat, unlike other dehumidifiers that can warm a room.
Our Verdict:
The VEAGASO dehumidifier is a strong and dependable unit. It is great for homes, especially in big areas that get damp, like basements and larger spaces. The adjustable humidity control panel and continuous draining option make it easy to use. This appliance helps maintain a comfortable and healthy indoor environment.
The dehumidifier performs well but lacks specific material and wattage information. I give this product a thumbs-up for anyone looking to combat high humidity levels in their home.
AIRPLUS 30 Pints Dehumidifier for Basements with Drain Hose
Specifications:
- Floor Area Coverage: Up to 1500 Square Feet
- Special Features: Continuous Draining, Portable, Quiet Operation, Automatic Moisture Removal, Digital Control Panel, Hidden Wheels
- Capacity: 1.5 Liters
- Tank Volume: Not explicitly mentioned, but the capacity suggests a 1.5-liter tank size.
- Product Dimensions: 7″D x 11.7″W x 19.6″H
- Item Weight: 22.1 pounds (10.05 Kilograms)
- Material: Not specified, but it has a sturdy, white plastic exterior.
- Wattage: 192 watts
- Operation Mode: Continuous
- Air Flow Capacity: 1.5 Liters (possibly referring to moisture removal rate)
- Dehumidification Capacity: 30 Pints per Day
User Experience:
The AIRPLUS dehumidifier has made my home more comfortable by controlling the humidity. It’s particularly effective in large spaces, managing areas up to 1500 square feet. The continuous draining feature is great. It allows you to use the machine without emptying the tank, which is a hassle.
It’s one of the quietest dehumidifiers, so it doesn’t disturb anyone sleeping in basement bedrooms.
Specific Situations:
- The device is great for basements or damp rooms because it reduces high moisture levels.
- When you’re sleeping, this operates quietly so you can sleep undisturbed, even if it runs all night.
- Being portable, I found it easy to move from room to room, thanks to its manageable size, lightweight, and hidden wheels.
Additional Observations:
- The simplicity of the design means it blends well with most home decor.
- The device adjusts its settings based on the humidity levels, using smart technology to remove moisture.
- The energy usage is reasonable, considering its size. The 192-watt power usage doesn’t affect the electricity bill.
Our Verdict:
The AIRPLUS dehumidifier is a robust and reliable appliance that delivers on its promises. It’s well-suited for anyone looking to combat high humidity levels in large spaces. This dehumidifier is easy to use and can remove moisture from your home. It’s a valuable addition.
The product works well. It only has a small mistake with the missing material and tank volume info. Based on my experience, I recommend this dehumidifier for its functionality and effectiveness.
Humilabs 22 Pints Dehumidifier
Specifications:
- Floor Area Coverage: Up to 2000 Square Feet
- Special Features: Manual operation mode
- Capacity: 30 Pints
- Tank Size: 3 Gallons
- Product Dimensions: 8.6″D x 10″W x 18.5″H
- Item Weight: 24.1 pounds
- Material: Plastic
- Wattage: Information not provided
- Operation Mode: Continuous
- Air Flow Capacity: 0.53 Gallons per Minute
- Dehumidification Capacity: 30 Pints per Day
User Experience:
As soon as I took the HUMILABS dehumidifier out of the box, I was impressed. The sleek, white design fit with my home’s interior. The setup was straightforward, thanks to the user manual included. The plastic construction felt strong. Despite being lightweight, the unit sat on the floor without wobbling.
Specific Situations:
- The dehumidifier was tested in a wet basement that was 2000 square feet. It maintains a comfortable humidity and makes the space feel fresher.
- I left the dehumidifier running overnight in continuous mode. By morning, the air quality had improved without any intervention on my part.
- Since the tank size holds 3 gallons of water, it didn’t need frequent emptying. When it was time, removing and putting it back was easy and clean.
Additional Observations:
- The unit has two-speed settings for quieter operation at night.
- The unit did not use much electricity during testing, so the bill didn’t increase.
- The dehumidifier removed 30 pints of moisture per day in a humid environment.
Our Verdict:
The HUMILABS dehumidifier for small basement is strong and effective. It’s great for improving air quality in medium to large spaces. You can use the features and continuous operation mode for different needs and preferences.
Although it has few smart features, the device is still worth it because it’s easy to use and removes moisture. It’s a great choice for anyone who wants a simple way to control humidity. The unit performs well and is easy to use. Those looking for a reliable dehumidifier should consider this as a recommendation.
AIRPLUS 70 Pint Dehumidifier for Basement
Specifications:
- Floor Area Coverage: 4,500 Square Feet
- Special Features: Ionier, Drying, Sleep, Defrost, Timer, Fan Settings
- Capacity: 5.3 Liters
- Tank Volume: 5.3 Liters
- Product Dimensions: 9.76″D x 13.78″W x 23.62″H
- Item Weight: 32.4 Pounds
- Material: Not specified, but likely a durable plastic housing
- Wattage: 300 watts
- Operation Mode: Continuous
- Air Flow Capacity: 70 Pints per day
- Dehumidification Capacity: Not explicitly stated, but implied by the airflow capacity
User Experience:
I tested the AIRPLUS Dehumidifier and found it to be robust and efficient. It’s designed to cover a large area of up to 4,500 square feet, making it an ideal choice for basements or large rooms. The unit has special features like an ionizer and a drying mode. These features make it more functional. It not only removes moisture from the air but also purifies the air.
Specific Situations:
- It excels in environments with high humidity. It maintains comfortable humidity levels, even in damp basement conditions.
- In cold climates, the DEFROST feature is helpful because coils can freeze easily.
- The SLEEP mode lets you run the dehumidifier overnight without any disturbance.
Additional Observations:
- The 5.3-liter tank is quite manageable and easy to empty. For continuous operation, a direct drain option would be beneficial.
- With a wattage of 300 watts, it balances power efficiency and performance.
- The dehumidifier makes some noise when running at full capacity, but it’s not too loud.
Our Verdict:
The AIRPLUS dehumidifier is a strong and flexible appliance. It is great for big areas that need moisture control. This machine is great at reducing humidity with its many features. It can remove up to 70 pints of moisture every day.
Although not the quietest or lightest, its performance and ease of use make up for those small drawbacks. The AIRPLUS dehumidifier is a reliable solution for moisture problems at home or work.
The Best Heavy-Duty Commerical Dehumidifiers for Basements
Finished and unfinished basements with high humidity levels need a heavy-duty commercial dehumidifier. They do not have tanks that need emptying. They use a drain hose to discharge condensation outside or into a sump pump.
ALORAIR 55-Pint Dehumidifier
Specifications:
- Floor Area Coverage: 1300 Square Feet
- Special Features: Continuous Draining, Automatic Defrost
- Capacity: 120 Pints
- Power: 110-120 Volt Wall Outlet, 471.5 Watts, Power Cord
- Product Dimensions: 19.2″D x 12.2″W x 13.3″H
- Item Weight: 44 Pounds
- Material: Alloy Steel
- Wattage: 471.5 Watt-hours
- Operation Mode: Continuous
- Air Flow Capacity: 130 Cubic Feet Per Minute
- Upper Temperature Rating: 104 Degrees Fahrenheit
- Dehumidification Capacity: 55 Pints per Day
- Warranty Description: 5 Year Limited
User Experience:
When I opened the box, I was amazed by the strong and stylish design of the ALORAIR Sentinel HD55. It’s not about looks; this machine is a powerhouse. The company makes this product for commercial use. It can cover up to 1300 square feet. It’s great for keeping basements or crawl spaces dry.
Specific Situations:
- The dehumidifier has a continuous operation mode and a draining feature. This means I don’t have to empty the water bucket. It’s a big advantage in a busy commercial setting.
- The automatic defrost function was helpful in cooler conditions. It kept the unit running without any ice build-up.
- The dehumidifier did a good job in a wet basement after it rained. It removed excessive moisture from the air and kept the humidity level comfortable.
Additional Observations:
- Energy Efficiency: The Energy Star certification proves its efficiency. This is especially important for a device that runs for a long time.
- Despite its high capacity, the unit operates quietly, which is a pleasant surprise.
- The dehumidifier was easy to set up and use because the controls were intuitive.
Our Verdict:
The ALORAIR dehumidifier is a top-tier appliance that delivers on its promises. This product is great for businesses because it holds a lot, saves energy, and is easy to use. The warranty gives you peace of mind. It makes sure this dehumidifier is a long-term solution. The Sentinel HD55 is a great choice because it keeps structures strong, prevents mold, and creates comfort.
I recommend the ALORAIR Sentinel HD55. It’s a powerful and reliable commercial-grade dehumidifier.
Aprilaire E70 Pro 70 Pint Dehumidifier
Specifications:
- Floor Coverage Area: Up to 2,200 sq. ft.
- Pint Capacity: 70 pints of water
- Auto-Restart: Yes
- Energy Star: No
- Continuous Drain Capable: Yes, with a 10 ft. drain hose included
- Controls: Electronic with a Humidistat
- Low Temperature Operation: Yes, down to 41 degrees F
- Automatic Defrost: Yes
- Fan Operation: Continuous
- Maximum CFM: 200 CFM
- Noise Level: Up to 53 dB
- Air Filter: Washable MERV 8
- Ductable: Yes
- Refrigerant Type: R-410A
- Safety Certifications: CSA
- Power: 110-120 Volt, 5.8 Amps, 696 Watts
- Dimensions: 12.5 in. (H) x 12.5 in. (W) x 25 in. (D)
- Weight: 56 lbs.
- Warranty: 5-Year Replacement Warranty
User Experience:
When I got the AprilAire E070, I immediately noticed how well-made it was. The gray color was also nice. The setup was easy, especially with the simple and user-friendly electronic controls. Since there were no casters, I had to find a permanent spot for installation. This wasn’t a problem in my basement.
Specific Situations:
In a high-humidity basement covering nearly 1,800 sq. ft., the dehumidifier maintains a comfortable humidity level. The continuous drain feature was a great help. It eliminates the need to empty a water container, which this model doesn’t have. The included drain hose was long enough to reach the basement drain.
On cold days, the heater works well in basements because it has low-temperature operation and automatic defrost.
The auto-restart comes in handy following a power outage.
Additional Observations:
The noise level, while noticeable, was not disruptive and comparable to a standard fan. The single fan speed was adequate for maintaining airflow and dehumidification without adjustments. You can wash the MERV 8 air filter, saving money on maintenance and reducing waste.
Our Verdict:
The AprilAire dehumidifier large basement model is very powerful. It works well in big homes and even warehouses. This device can work in cold temperatures and continuously drain, making it easy to use for controlling humidity. It doesn’t have casters, a water container, or Energy Star certification. But its efficiency and performance make up for these missing features.
With the 5-year warranty, you can feel confident that this dehumidifier will last, keeping your space dry and comfortable. It’s a solid choice for anyone tackling high humidity levels in expansive spaces.
BaseAire Crawl Space/Basement Dehumidifier
Specifications:
- Brand: BASEAIRE DRY YOUR CRAWL SPACE & BASEMENT
- Floor Area Coverage: 1000 Square Feet
- Special Features: Portable, Compact
- Dehumidifying Capacity: 70 Pints of water per day
- Tank Volume: 1000 Cubic Centimeters
- Product Dimensions: 15.35″D x 11.2″W x 11.4″H
- Recommended Uses: Commercial
- Item Weight: 21.46 Kilograms (47.2 pounds)
- Operation Mode: Continuous
User Experience:
As soon as I took the BaseAire dehumidifier out of the box, I could tell it was well-made. Although it’s small, it’s a bit heavy, but the design ensures that it’s still portable. Setting it up was easy, and I could let it run without checking often.
Specific Situations:
- I tried out the dehumidifier in a 1000 sq. ft. basement that was damp and smelled bad. The basement also had mold problems. Within a couple of days, the indoor air quality improved, and the musty odor was almost gone.
- I also had the opportunity to use it in a space that had experienced minor flooding. The dehumidifier had a pump and hose. It drains continuously to maintain humidity levels while drying the area.
Additional Observations:
- The noise level was okay for a commercial dehumidifier, and it didn’t disturb the work.
- The water tank was enough for small spaces, but for bigger areas or worse humidity, continuous drainage saved lives.
- The device appeared to use less energy, which is important for long periods of use.
Our Verdict:
The BaseAire dehumidifier is a solid choice for commercial use, especially in basement living spaces up to 1000 square feet. Its ability to pull 70 pints of moisture from the air daily makes it a powerful ally against humidity. Despite being heavy, the portable design adds convenience.
Plus, the continuous operation mode with the drainage pump and hose was impressive. I have experience with this dehumidifier, so I recommend it. It’s great for controlling humidity in big homes or commercial places. It’s a reliable workhorse that lives up to its specifications.
BLUEDEEP Basement/Crawl Space Dehumidifier
Specifications:
- Floor Area Coverage: 6000 Square Feet
- Color: 145 PPD (Pints Per Day)
- Special Feature: Automatic Defrost
- Capacity: 145 Pints
- Tank Volume: 145 Pints
- Product Dimensions: 14.8″D x 22.6″W x 13.7″H
- Recommended Uses: Commercial
- Included Components: User Manual, Dehumidifier
- Item Weight: 34.02 Kilograms
- Material: Cold rolled sheet
- Model Name: 145
- Wattage: 900 Watt-hours
- Operation Mode: Standard
- Air Flow Capacity: 6000 Square Feet
- Upper Temperature Rating: 95 Degrees Fahrenheit
User Experience:
As soon as I opened the BLUEDEEP dehumidifier, I could tell it was made for tough conditions. The cold-rolled sheet material gave it a durable feel, and at 74.8 pounds, it’s hefty but manageable. The setup was straightforward, thanks to the clear instructions in the user manual.
Specific Situations:
The dehumidifier worked well in a 6000 square foot area with high humidity. The defrost feature helps the unit work well in cold conditions when other dehumidifiers might freeze. The airflow capacity was sufficient to maintain consistent humidity.
Additional Observations:
The energy consumption is reasonable for a commercial-grade dehumidifier, at 900 Watts-hours. It’s not the most energy-efficient on the market, but for its capacity, it’s quite acceptable. The noise level is also worth mentioning; it’s not whisper-quiet but doesn’t disrupt the work environment.
Our Verdict:
The BLUEDEEP is one of the best dehumidifier for large basement requiring excessive moisture removal. Its performance is reliable, and the build quality suggests it will last. The automatic defrost feature is particularly beneficial for cooler climates or unheated spaces.
What Features to Look for When Buying a Basement Dehumidifier
Humidity in your basement can be a never-ending problem. You may think you have it under control, but one rainstorm can bring back moisture. This creates a place where mildew and mold can grow. Using a dehumidifier can help manage moisture in a damp, musty basement.
You should look for some features when choosing the best basement dehumidifier. Not all models have these features, but if you’ll use the dehumidifier a lot, they’re important. The following characteristics often affect how well the dehumidifier works.
Dehumidifier Size
Dehumidifiers vary in size depending on the amount of water they remove from the air each day. The best basement dehumidifier depends on the square footage and humidity level.
You’ll need a dehumidifier with a higher capacity to remove moisture in very damp basements. Here’s a handy humidity table
Low humidity is less than 40%
Medium humidity is 40% to 60%
High humidity is 60% or higher
| Dehumidifier Size PPD | Low Humidity | Medium humidity | High humidity |
|---|---|---|---|
| 40 PPD | 1000 to 1500 SF | 500 to 1000 SF | 500 SF or less |
| 55 PPD | 2000 to 2500 SF | 1500 to 2000 SF | 1000 to 1500 SF |
| 70 PPD | 2500 to 3000 SF | 2000 to 2500 SF | 1500 to 2000 SF |
| 100 PPD | 3000+ SF | 2500 to 3000 SF | 1500 to 2000 SF |
Humidistat
A digital humidistat measures humidity and tells the dehumidifier when to turn on and off. It uses the desired setting. If you set the humidity level to 45%, the unit turns off when it drops below 45%. If it’s higher, it keeps working until it reaches 45%.
The humidistat keeps you from wasting energy by running when you don’t need it to work. The dehumidifier’s onboard sensors will then check the air quality in your home. When the humidity is too high, the dehumidifier turns on until it’s lower.
Defrost Protection
Most dehumidifiers use a refrigerated coil to change the humidity in the air back into the water. These units can get very cold on the inside and can freeze if the conditions are right. If ice crystals form on the coil, defrost protection will warm it to keep your unit working well.
When there is excessive moisture in the air, ice crystals can form inside the dehumidifier, which makes it work less effectively. You can use dehumidifiers with defrost mode in basements with an average temperature below 65 degrees F.
Low-Temperature Setting
If you use your dehumidifier in freezing temperatures, get one with a low-temperature setting. This allows the dehumidifier to work in a basement lower than 41° F without the risk of freezing.
These settings won’t help most people because they only use their dehumidifier in warm, humid months. If you live in the Pacific Northwest, where winters get humid, this feature will help you during colder months.
Timer
Timers let you set how long your dehumidifier will run. You can set timers from 1 to 8 hours. It’s also helpful if you only want your dehumidifier to work when you’re not home and can’t hear it.
Dehumidifiers can be pretty noisy when running, which can be problematic if you need to place them near a bedroom or office. If this is the case, a built-in dehumidifier timer can be helpful.
Discharge Drain Hose Outlet
A discharge drain hose is a connection port for condensation from the dehumidifier. You often find these on dehumidifiers without collection tanks, in basements, and in crawl spaces.
The drain hose removes moisture without you having to empty a collection bucket. This prevents moisture buildup inside the dehumidifier. To do this, a gravity drain is used. It flows from the unit to a condensate pump, a sewer drain at floor level, or a sump pump system.
Condensate Pump
If your basement doesn’t have a sewer drain on the floor, you’ll likely need a condensate pump for your dehumidifier. This pump will remove the water that the dehumidifier collects. A condensate pump helps remove and direct water discharge outside and away from the house.
An unfinished basement needs a stronger dehumidifier. You should get a commercial-grade one that can handle tough conditions.
What To Consider Before Buying a Basement Dehumidifier
There are several things to consider before purchasing a particular basement dehumidifier model.
When choosing a dehumidifier for your basement, you should think about where you will use it and how big the space is. You should compare different models and choose one with the features you care about most.
Large dehumidifiers are not always better. There’s no reason to buy a larger dehumidifier when a small dehumidifier works fine. They may have a bigger tank but can be noisy when operating. Large machines can also cycle on and off more, which can cause them to wear out faster.
To avoid buying and maintaining multiple dehumidifiers, choose the right size once.
You also need to think about whether you want a machine that needs to be empty or one that drains to the outside.
- A portable dehumidifier works well in small, conditioned spaces. You need to empty its tank or use a drain hose to a sink.
- A commercial dehumidifier is most effective in big, unconditioned spaces. It needs a drain pipe to remove the water.
Room Size and Average Humidity
If your basement has segmented rooms or closed-off areas, you need more than one dehumidifier. The dehumidifier won’t work if it’s not powerful enough for the space it’s in. Thinking about your basement size is critical before choosing a particular dehumidifier type.
You must know the basement square feet to determine how well your unit deals with excessive moisture. You can do this by multiplying the basement’s width by the length. Once you have that total, you must compare it to the typical amount of moisture the room usually receives.
If you have a 2000 SF unfinished basement with high humidity, a 70-pint dehumidifier would be best. If you have a 2000 SF finished basement with low humidity, a 35-pint dehumidifier would be enough. See our humidity and square footage chart above.
Noise Level
Dehumidifiers can be louder than other appliances. The fan quality inside the dehumidifier is where most of the noise originates. Before purchasing a dehumidifier, think about where you will place it and if the fan noise will be an issue for you. If it will, try to find a quiet dehumidifier that operates at 40 decibels or less.
You can disregard this consideration if you don’t mind the fan noise from your dehumidifier. If you want to use a dehumidifier in a different place, be aware of the fan noise it makes.
Room Temperature
The temperature of your room can affect how well your dehumidifier works. Some models only work between 41 and 95 degrees Fahrenheit.
If you want to use a dehumidifier in a basement or cold space, choose a heavy-duty unit. Make sure it has low-temperature settings and defrost features. This will help ensure your dehumidifier stays working in cold weather.
How Does A Dehumidifier Work?
Dehumidifiers convert water vapor from the air and turn it into liquid water so that you can remove it. Newer dehumidifiers usually use a refrigerant or desiccant method to take in humid air and convert it into water for removal.
How Dehumidifiers Collect Water
There are two types of dehumidifiers:
- Those that use a refrigerant
- Those that use a desiccant
Both of these have different efficiency rates and internal temperatures. Make sure you know which is before you buy to get the most efficient dehumidifier for your basement.
If you are not sure about exactly what dehumidifiers are, do not worry. You are not alone. Many people do not know there is more than one way for dehumidifiers to remove excess humidity from the air.
Refrigerant
The most popular refrigerant dehumidifiers have an average extraction efficiency rating. To collect water, humid air passes over a cold coil, which makes the water condense and falls into a tank.
Refrigerant dehumidifiers remove excessive moisture from the basement by cooling the air with a metal plate.
When the air goes over the cooling plate, its moisture condenses and drips into a tank or drain. The dry air enters the room, reducing humidity and eliminating odors in the basement.
Desiccant
Desiccant dehumidifiers have silica gel that absorbs moisture from the air and dries out. Silica gel packets are popular dehumidifiers. They contain certain items and work as desiccants.
Desiccant dehumidifiers have an internal rotor covered in absorbent materials, such as silica gel. This captures the water vapor in the air.
Desiccant dehumidifiers are often utilized in cold climates because refrigerant-based dehumidifiers may freeze. They rarely freeze and work great in cold weather.
The efficiency loss is significant. It’s important to remember that the material used to soak up excessive moisture may take a while to completely dry. Desiccant-based drying systems can use up a lot of electricity.
When to Empty a Dehumidifier Tank
Most dehumidifiers do not need a lot of work from you. But you must empty the water collection tank, or the dehumidifier will stop working. Look at the size of the collection bin and compare it against the number of pints of moisture removed per day.
The bucket capacity of a dehumidifier is how much water it can hold. This differs from how much moisture the unit can take out of the air daily. You should know this to determine how capable a dehumidifier will be in your basement.
In places with low humidity, you may only need to empty dehumidifiers every few days. In high humidity, you may need to empty them several times a day.
What Size Dehumidifier Do You Need For Your Basement?
A dehumidifier size can refer to two things:
- the dehumidifier’s physical dimensions
- how much water can it remove from the air daily
The water it removes from the air daily is most important when speaking of basements.
If your basement has a lot of humidity, you may need a bigger and more powerful dehumidifier. These dehumidifiers can dry out a damp basement in 8 to 10 hours. Once dry, the dehumidifier will cycle intermittently to maintain lower humidity levels.
How Long Will a Dehumidifier Last?
A portable dehumidifier will last about 3 to 5 years on average. These units often have cheap plastic parts that break easily. Most portable dehumidifiers only have a 1-year warranty, so routine cleaning is essential for longevity.
A commercial-grade dehumidifier can last 5 to 10 years if properly maintained. These larger units have an air filter that needs cleaning or replacing every six months. You can do this yourself or hire a service contractor to do this. You’ll need to clean the internal parts and replace dirty filters.
All dehumidifiers need routine service. Check out this video for some great tips for extending the life of your basement dehumidifier.
How We Rate the Best Dehumidifier for Basements
I have a testing method to find the best dehumidifiers for basements. It rates each criterion from 1 to 5.
- Dehumidification Performance: I evaluate how much water it can remove and the size it can cover. Then, I rate them for average basements. For instance, a unit that removes 70 pints daily and covers 4,500 sq. ft. would earn a 5/5.
- Energy Efficiency: I examine the energy consumption and Energy Star ratings. A dehumidifier with low energy usage and an Energy Star rating would score a perfect 5/5.
- Humidity Control: The precision of the hygrometer and the range of the humidistat are tested. A unit with less than 3% variance in humidity readings and a wide humidistat range gets a 5/5.
- Operational Features: Features like auto-restart and auto-defrost are evaluated. A dehumidifier with all the advanced features would be rated 5/5.
- Drainage Options: I look for ease of continuous drainage and the presence of a built-in pump. A model with both features functioning flawlessly scores a 5/5.
- Maintenance and Cleaning: Units with filter indicators and easy-to-clean parts get higher scores, up to 5/5, for user-friendly designs.
- Noise Level: I measure the decibel level of the fan noise. A whisper-quiet dehumidifier rates at 5/5.
- Portability: Dehumidifiers with easy mobility features can earn up to a 5/5.
- Durability and Warranty: I prioritize solid construction and long warranty coverage.
- Price and Value: I analyze the cost against features and performance, with a 5/5 for exceptional value.
Portable Dehumidifiers for Basements:
| Criteria/Products | hOmeLabs 35 Pint | Midea Cube 35 Pint | Humilabs 22 Pints | VEAGASO 30 Pint | Vellgoo 52 Pint | AIRPLUS 30 Pint | AIRPLUS 70 Pint |
|---|---|---|---|---|---|---|---|
| Dehumidification Performance | 5 | 4 | 4 | 4 | 5 | 4 | 5 |
| Energy Efficiency | 5 | 4 | 3 | 3 | 5 | 4 | 4 |
| Humidity Control | 5 | 5 | 4 | 5 | 5 | 4 | 5 |
| Operational Features | 5 | 4 | 3 | 4 | 4 | 4 | 5 |
| Drainage Options | 4 | 5 | 4 | 5 | 4 | 4 | 4 |
| Maintenance and Cleaning | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Noise Level | 4 | 4 | 5 | 4 | 5 | 5 | 3 |
| Portability | 3 | 4 | 5 | 5 | 4 | 5 | 4 |
| Durability and Warranty | 4 | 4 | 4 | 3 | 5 | 3 | 3 |
| Price and Value | 5 | 4 | 5 | 5 | 4 | 5 | 4 |
| Average Score | 4.4 | 4.2 | 4.1 | 4.2 | 4.5 | 4.2 | 4.1 |
Heavy-Duty Commerical Dehumidifiers for Basements:
| Criteria / Product Name | Aprilaire E70 Pro | ALORAIR 55-Pint | BaseAire | BLUEDEEP 145 Pint |
|---|---|---|---|---|
| Dehumidification Performance | 4 | 4 | 4 | 5 |
| Energy Efficiency | 4 | 5 | 5 | 4 |
| Humidity Control | 5 | 5 | 4 | 5 |
| Operational Features | 4 | 4 | 3 | 4 |
| Drainage Options | 5 | 5 | 5 | 5 |
| Maintenance and Cleaning | 4 | 4 | 4 | 4 |
| Noise Level | 3 | 4 | 4 | 3 |
| Portability | 2 | 4 | 4 | 4 |
| Durability and Warranty | 5 | 5 | 4 | 4 |
| Price and Value | 3 | 5 | 5 | 4 |
| Average Score | 3.9 | 4.5 | 4.2 | 4.2 |
Best Dehumidifier for Basement FAQs
Do you need a basement dehumidifier?
If your basement is often damp and musty, a dehumidifier is perfect. The relative humidity (RH) should be less than 40% to avoid mold problems. Relative humidity over 50% can cause problems that a dehumidifier can rectify. To solve the problem, find and fix the source of excess moisture in your basement.
How much do basement dehumidifiers cost?
The cost of a basement dehumidifier varies based on its size and humidity levels. Prices range from $200 to $2000. A small dehumidifier costs $200 to $500, and a big one for basements costs $600 to $2000. Installing a commercial basement dehumidifier can increase the total cost.
What size dehumidifier do I need for my basement?
When choosing a dehumidifier for your basement, think about how big it is and how humid it gets. If your basement is big and damp, you’ll need a dehumidifier that can hold more water. Look for models that specify coverage area and pint per day (PPD) of water it removes. Sizing can be from 40 to 200 PPD. A 55-PPD dehumidifier will regulate about 1300 SF.
Are Energy Star-rated dehumidifiers worth the extra cost?
Energy Star-rated dehumidifiers save you money on electricity bills because they use less energy. They’re more efficient. If you use your dehumidifier often, they are worth the investment.
What humidity setting is best for a dehumidifier in a basement?
The best humidity setting is 45%. Lower than 30%, and the air can become too dry. Higher than 55%, the air can become too moist and conducive to condensation and mold problems.
How often will I need to empty the water bucket in my dehumidifier?
How often you empty the water bucket depends on the dehumidifier’s tank capacity, the size of the bucket, and the humidity in your basement. Models with a continuous drainage option can end the need for manual emptying.
Can a dehumidifier work in a cold basement?
Yes, many dehumidifiers work in cold environments. To make sure it works well in cool temperatures, find models with auto-defrost and low-temperature operation.
When to use a dehumidifier in a basement?
Using a dehumidifier in any basement with high humidity is best. If water is coming into your basement from outside, you should start by waterproofing the walls. A dehumidifier won’t be as effective without stopping water intrusion first.
Where to place a dehumidifier in a basement?
It’s best to place the dehumidifier in the center of the basement. If you can’t put it in the middle, place it closer to the walls, pointing towards the basement center.
What features make a dehumidifier easy to use?
Dehumidifiers are easier to use with digital humidistats, auto-restart, and direct drainage features. Models with washable filters and clear water level indicators also make it more convenient.
How do I know if a dehumidifier is durable?
How something is made tells you how long it will last and who made it. A longer warranty shows the manufacturer believes their product will last a long time.
Is it better to get a dehumidifier with a pump?
If you need to move water upward or a long distance, a dehumidifier with a built-in pump is helpful. The unit can pump water away, so you can put it anywhere and it will keep working without your help.
