Best Bathroom Dehumidifiers of 2022

The best dehumidifiers for bathrooms are compact and can run continuously to reduce humidity. See our top picks.

The bathroom is notorious for being high in moisture and humidity, but will a dehumidifier help?

Mold and mildew are prone to grow in the dark spots of a bathroom, such as the corners and around the toilet. Here, mold has access to everything it needs to grow: bacteria, moisture, warmth, and darkness (1).

The best bathroom dehumidifiers can help to keep moisture to a minimum. But which one should you choose? This depends on a few things, such as the size of your bathroom and humidity levels.

Our Top Picks

Oh So Spotless earns a commission through the following independently chosen links at no additional cost to you.
Product Comparison Table

Product Image of the TOSOT 20 Pint 1,500 Sq Ft Dehumidifier Energy Star - for Home, Basement, Bedroom or Bathroom - Super Quiet (Previous 30 Pint)
Best for High Moisture
Tosot 30-Pint Dehumidifier
  • Ideal for bathrooms
  • Energy-efficient
  • Quiet
Product Image of the AIRPLUS 30 Pints 1,500 Sq. Ft. Dehumidifier for Basement, Bedroom, Bathroom, Powerful Dehumidifier for Home with Ultra-Quiet Operation, Auto Shut-Off & Drain Hose (AP1907P)
Best Portable
AirPlus 30-Pint Dehumidifier
  • Easy to operate
  • Auto-shutoff
  • Automatic or manual drain
Product Image of the COLZER 30 Pints Dehumidifiers for Home, Basements, Bathroom, Kitchen, Bedroom, Garages, Portable Dehumidifier with Drain Hose for Spaces Up to 1000 Sq. Ft.
Best 30-Pint
Colzer 30-Pints Dehumidifier
  • Excellent control panel
  • Large coverage
  • Accurate humidity control
Product Image of the MADETEC Upgraded Dehumidifiers for Home (550 Sq.ft), Small Portable Dehumidifier with Drain Hose and 64oz Water Tank , Ideal for Basements Bedroom Bathroom Closet Kitchen RV
Best Small
Latitop Small Dehumidifier
  • Good for small bathrooms
  • Auto-shutoff
  • One-button operation
Product Image of the Frigidaire Dehumidifier, High Humidity 50 Pint Capacity with Built In Pump, in White
Best 50-Pint
Frigidaire 50-Pint Dehumidifier
  • Energy-efficient
  • Removes bacteria
  • Continuous drain option

Do Dehumidifiers Work in Bathrooms?

The bathroom is a generally humid and moist room since it’s where we shower. Smaller homes or apartments might even use the bathroom as a laundry room as well.

Mold and mildew are likely to grow in an unkempt bathroom with high humidity. It’s, therefore, recommended to install a fan and a dehumidifier.

Will A Fan Work?

A fan alone isn’t always enough to keep humidity levels down. As such, experts recommend that you use a dehumidifier in the bathroom to prevent mold (2).

What Size Dehumidifier Do I Need for a Bathroom?

Due to the often compact space of a bathroom, you won’t need a large dehumidifier. However, it’s important to consider the tank size. Since it will be extracting a significant amount of moisture, a small tank has to be emptied often.

We’ve found that a 30-pint dehumidifier is an excellent size for most bathrooms. They generally have a reasonably-sized tank and even a continuous drain option.

Choosing the Best Bathroom Dehumidifier

There are many dehumidifiers available on the market, but not all will be suitable for the bathroom. Here are a few points you should consider before purchasing a unit.

Area Coverage

Area coverage is an important thing to look for when searching for a dehumidifier. It’s usually measured in square feet, but some manufacturers choose to use cubic feet instead. The area coverage refers to how big of an area the unit can dehumidify in one go.

If you know how many square feet your bathroom is, it would be an excellent starting point. You must also consider if the dehumidifier will be used in other rooms as well. Choosing one that can cover an area slightly larger than your bathroom is ideal.

You’ll find that most of the dehumidifiers on our list below cover up to 1,000 square feet or more. We found that this was a good size for a bathroom. It’s important not to misjudge a dehumidifier’s abilities — not all units will perform equally.


Performance is a crucial point; bathrooms are generally more humid than other rooms. So it’s important to have a dehumidifier that can handle the amount of moisture it has to extract to prevent mold and mildew.

We found that a minimum of 30-pint dehumidifiers performed best in moist bathrooms. Smaller, more portable units didn’t lower the humidity levels as much. Again, this depends on your personal needs. If your bathroom is small and you need a dehumidifier that can stand on a small table, portable is the way to go.

Tank Capacity

The tank capacity refers to how much water the dehumidifier can hold. Now, because bathrooms are usually more humid, a small tank can become inconvenient as you have to empty it often. It’s also important to note that pints per day and tank capacity are very different.

Merely because a unit can extract 30 or even 50 pints per day, it doesn’t mean it can hold that much. You might be surprised at how small some reservoirs are compared to how much moisture the unit can extract.

Continuous Drainage

Some dehumidifiers have the option of continuous drainage, which is really handy in a bathroom.

You simply attach a hose to the unit — a standard garden hose or an included hose — and put the other end into a drain or sink. The dehumidifier will then work continuously without the need to be emptied.

It’s essential, however, that the drain point is below the drain outlet. Most dehumidifiers use gravity to get the water from the unit to the drain. Larger units (50 pints, 70 pints and more) might have a built-in pump that forces the water out.

As convenient as continuous drainage is, it can be tricky to find a good position. It has to be close to a drain, sink, or even shower.

The Best Bathroom Dehumidifiers of 2022

Having a dehumidifier in the bathroom can help to keep mold and mildew at bay. But how do you find the best one for you? After searching through some of the best-selling dehumidifiers, we found five units that are sure to perform well. Here are the best bathroom dehumidifiers:

1. Tosot 30-Pint Dehumidifier

Best Bathroom Dehumidifier for High Moisture

For high-moisture rooms such as laundry and bathrooms, we highly recommend the Tosot. It’s a 30-pint dehumidifier that works very quietly and efficiently using minimum energy. The dehumidifier is easy to operate and you can set your desired humidity levels.

You can choose to use the bucket as it operates. It’s simple to remove and is fitted with a handle. For continuous drainage, connect a standard garden hose and let the unit run without worrying about emptying the tank.

Photo of the Tosot 30-Pint Dehumidifier

The Pros

Ideal for Bathrooms

This dehumidifier was designed to cover a room of up to 1,500 square feet, making it ideal for bathrooms. It’s very strong and will remove up to 30 pints of moisture per day — excellent for rooms with higher moisture. You can use the reservoir or connect it using the hose for continuous drainage.


Maybe you want to help make the planet a little bit greener, or you simply want to save a few bucks. No matter your reason, this unit is sure to do both. It’s energy-efficient and even Energy Star rated.


A noisy dehumidifier isn’t ideal no matter where in the house it’s being used. Happily, the Tosot dehumidifier works at a super quiet level of only 48 decibels on the low setting and 52 on the highest. Customers describe the sound like white noise, so it isn’t bothersome.


Having to reset your dehumidifier after a power outage isn’t convenient. Thankfully, this unit has a solution. If a power outage were to happen, the dehumidifier will automatically revert to the same settings that you last selected.

Washable Filter

The air filter within the dehumidifier is easy to locate and you can quickly slide it down to remove it. Use warm water and a mild detergent to wash it clean. Make sure it’s fully dry before placing it back into the dehumidifier.

Tosot recommends that the filter is cleaned after 250 hours of usage. No need to bother counting; a light on the display will notify you when cleaning is needed.

The Cons

Small Reservoir

Despite the fact that this dehumidifier can remove up to 30 pints per day, the reservoir is small. In highly humid rooms, it will need to be emptied often.

Additional Specs

Room Coverage 1,500 square feet
Tank Capacity 8 pints
Pints Per Day 30 pints
Dimensions 13.4 by 9.9 by 19.5 inches
Sound Level 48 – 52 decibels

2. AirPlus 30-Pint Electric Dehumidifier

Best Portable Bathroom Dehumidifier

The AirPlus dehumidifier is a smart-looking, compact unit. It was designed to cover rooms of up to 1,500 square feet and it will extract 30 pints of moisture per day.

The display is easy to figure out and simple to operate. It lets you know the current humidity as well.

This product comes with a few features such as a universal caster for unrestricted mobility, auto-shutoff, and easy to operate four modes in one switch. Best of all, you can also connect it to a hose for continuous drainage.

Photo of the AirPlus 30-Pint Electric Dehumidifier

The Pros

Easy to Operate

We love the large control panel display you get on this dehumidifier. It’s easy to read and simple to use. It will show you the current humidity in the room and lets you control your desired humidity levels. Set your desired mode according to need using the button and set the 24-hour timer.


It can be easy to forget to empty the tank, but if it overflows, it can ruin the unit and the area around it.

Luckily, the auto-shutoff function is here to help. It will automatically turn the dehumidifier off when the tank is full. You’ll then get notified via a light on the display that it’s time to empty the tank.

Automatic or Manual Drain

This dehumidifier comes with a 2.85-pint reservoir to hold all of the moisture it draws from the air. It’s easy to locate and remove when it requires emptying. If you want to use the unit around the clock without worrying about the tank, you can connect a hose.

Washable Filter

For the dehumidifier to operate optimally, the air filter has to be clean. You can clean it once a month or as needed. Simply remove it from the back of the unit and either wash with warm water or use a vacuum — make sure it’s dry before replacing it.

The Cons

Flimsy Button

Although this dehumidifier works effectively, a few customers noted that the control panel buttons look flimsy and may need some support.

Additional Specs

Room Coverage 1,500 square feet
Tank Capacity 2.85 pints
Pints Per Day 30 pints
Dimensions 19.61 by 6.69 by 11.3 inches
Sound Level 45 decibels

3. Colzer 30-Pints Compact Dehumidifier

Best 30-Pint Bathroom Dehumidifier

If you’re looking for something compact and easily portable, the Colzer is perfect. This smart-looking dehumidifier works efficiently and effectively, bringing you correct humidity readings as well as results.

It can cover rooms of up to 1,500 square feet and has a large reservoir, so you don’t have to empty it as frequently. Maintenance is also easy as you can quickly remove the air filter to clean it. The unit will notify you when the tank is full.

Photo of the Colzer 30-Pints Compact Dehumidifier

The Pros


The Colzer 30-pint dehumidifier is an excellent addition to a medium-sized bathroom. It’s compact and slim and won’t take up too much space. The design is also very easy on the eye, which is, of course, a plus in our book.

You can move it from room to room with little effort, thanks to the four caster wheels. It’s also quite light despite the large tank, weighing only 29 pounds.

Large Coverage

Despite its compact size, this dehumidifier can cover a room of up to 1,500 square feet. It will effectively remove up to 30 pints per day and can hold up to 9.6 pints in the tank. This is much larger than similar 30-pint units, and it means you won’t have to empty it as often.

Accurate Humidity Control

Some dehumidifiers seem to be living in a world where the humidity levels are all wrong. However, the Colzer is intelligent and actually monitors the humidity to give you precise numbers. This will help to give you a more controlled environment.

Excellent Control Panel

The control panel is easy to figure out and comes with a number of smart features and functions. The LED display lights up for you to check the humidistat, set your ideal levels and speed. You can also set the 24-hour timer and check the tank — it will notify you when it’s full.

Included Hose

If you don’t want to worry about emptying the tank, you can easily hook up the included 3.2-foot hose. Connect it to a nearby drain and the unit will automatically drain as it extracts moisture from the air.

The Cons


Despite the compact size, the Colzer can be quite loud. At high speed, it tends to create some vibrations that cause noise.

Additional Specs

Room Coverage 1,500 square feet
Tank Capacity 9.6 pints
Pints Per Day 30 pints
Dimensions 10.04 by 10.04 by 17.95 inches
Sound Level 42 decibels

4. Latitop Small Dehumidifier

Best Small Bathroom Dehumidifier

For smaller bathrooms, we highly recommend the Latitop dehumidifier. It’s compact and works effectively in compromised spaces. It operates without a compressor and is, therefore, very quiet — even at night.

There’s a one-button operation, so it’s super easy to figure out. It will also help you save energy by consuming only 48 watts in an hour, not to mention its price point is below a hundred dollars.

Photo of the Latitop Small Dehumidifier

The Pros

Good for Small Bathrooms

This dehumidifier is excellent for smaller bathrooms or half baths. It has a reasonably sized tank of 4.23 pints and will remove between 1.48 and 2.11 pints of moisture per day.


To avoid any accidental overflow, the unit will turn off automatically when the tank becomes full. The indicator on the LED display will then turn red to notify you that it needs to be emptied. Once the tank is empty and back in place, the indicator will turn off.

The tank is easy to locate and remove — simply slide it out of the back and open the plug to empty. Slide it right back into place once you’re done.


Annoyingly loud dehumidifiers can be frustrating to use within the home, especially in an echoing bathroom. Luckily, this dehumidifier will only produce about 50 decibels when working. It doesn’t have a compressor, which enables it to be whisper-quiet and vibration-free.

One-Button Operation

A simple press on the on/off button is all it takes to start the dehumidifier. There’s no need to spend hours reading a manual. It’s simple, yet highly effective in a small bathroom.

The Cons

Only for Small Rooms

Although this dehumidifier works very effectively, it won’t be as effective in larger or open rooms.

Additional Specs

Room Coverage 480 square feet
Tank Capacity 4.23 pints
Pints Per Day 1.48 pints
Dimensions 8.19 by 5.9 by 13.27 inches
Sound Level 50 decibels

5. Frigidaire 50-Pint Dehumidifier

Best 50-Pint Bathroom Dehumidifier

If you want a little extra out of your dehumidifier, this is for you.

The Frigidaire dehumidifier will not only lower the humidity, but will also clean the air.

It works effectively in the time it lasts and is also very energy-efficient.

You get a one-year warranty to cover any defects or malfunctions caused by manufacturing.

Photo of the Frigidaire 50-Pint Dehumidifier

The Pros


Despite the big size, the Frigidaire dehumidifier is extremely energy-efficient, using only 115 volts. It’s Energy Star rated and won’t raise your energy bills by much.

Removes Bacteria

This dehumidifier will keep the relative humidity to a minimum. But better yet, it will also help eliminate bacteria in the air. It’s fitted with an antibacterial mesh filter that captures airborne particles and neutralizes odors.


You can easily move the unit from room to room, thanks to the four caster wheels. It also includes a top handle and two side handles for improved mobility.

Continuous Drain Option

The tank will hold up to 16.3 pints of water extracted from the air. However, you can also use the continuous drain option.

Attach a garden hose to the unit and find a nearby drain. The dehumidifier will work without stopping and you don’t have to worry about overflow.

The Cons

Won’t Last for Long

Unfortunately, this dehumidifier won’t last for long. Many customers report a failure within three years of usage.

Additional Specs

Room Coverage 1,000 square feet
Tank Capacity 16.3 pints
Pints Per Day 50 pints
Dimensions 24.65 by 11.32 by 16.08 inches
Sound Level Not specified

Bathroom Dehumidifier Comparison Chart

Product Best Room Coverage Tank Capacity Pints Per Day Dimensions Sound Level
Tosot 30-Pint High Moisture 1,500 sq ft 8 pints 30 13.4 x 9.9 x 19.5″ 48 – 52 dec
AirPlus 30-Pint Portable 1,500 sq ft 2.85 pints 30 19.61 x 6.69 x 11.3″ 45 dec
Colzer 30-Pints Compact 30-Pint 1,500 sq ft 9.6 pints 30 10.04 x 10.04 x 17.95″ 42 dec
Latitop Small Dehumidifier Small 480 sq ft 4.23 pints 1.48 8.19 x 5.9 x 13.27″ 50 dec
Frigidaire 50-Pint 50-Pint 1,000 sq ft 16.3 pints 50 24.65 x 11.32 x 16.08″ N/A

How Do I Keep Moisture out of My Bathroom?

Here are a few tips to help you keep moisture to a minimum in the bathroom:

  • Fix leaks: If there are any leaks within the bathroom, there’ll be excess moisture. Before installing a dehumidifier, you’ll have to fix any leak.
  • Ventilate: After showering, don’t walk out and shut the door — this will trap heat and moisture inside. Let the door stay open, turn on the dehumidifier, and allow the room to dry.
  • Remove excess water: After a shower or cleaning, wipe down any wet surface. This will limit excess water and help to keep humidity levels down.
  • Take wet clothes outside: If you live in a confined space, the bathroom might be the place where all the laundry goes. However, drying your laundry in the bathroom isn’t ideal as it will raise the humidity. If possible, try to find a different area to dry your clothes.

Controlling Humidity

The bathroom is often damp, hot, humid, and everything else that’ll attract mold, mildew and bacteria. However, it’s crucial to keep humidity levels to a minimum to avoid a mold problem.

We found that the best bathroom dehumidifiers are often the 30-pint dehumidifiers. However, it also depends on the room size and your needs as well. Having the option of continuous drainage can be very convenient, especially if the tank is on the smaller side.

Headshot of Matthew Sullivan

About the Author

Matthew Sullivan

Matthew is a freelance writer with several years of experience in DIY and HVAC. For as long as he can remember, Matthew has always found great pleasure in taking things apart and learning how to put them back together.