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The Ultimate Guide to Buying the Best Bathroom Dehumidifier 2021

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best bathroom dehumidifier

The best bathroom dehumidifier can transform a musty, smelly bathroom into a spa-smelling room. Of course, there are several other things you need to do to get it smelling fresh, but keeping the room dry is the starting point.

Excess moisture can cause the growth of mold and mildew, damage to the bathroom paint, and cause your towels to be stinky. That’s why it is important to invest in a quality bathroom dehumidifier.

Unfortunately, it can be hard to know the right bathroom dehumidifier as there are hundreds of models in the market, with each claiming to be the best.

So, how do you spot the best dehumidifier for bathroom? Well, we took the initiative of doing the hard work for you. After analyzing tens of models, checking customer reviews, expert analysis, and their features, we settled on three models, which we will review shortly.

If, after reading the reviews, you wouldn’t have made up your mind regarding the right dehumidifier for your bathroom, My HVAC Price has prepared a detailed buyer’s guide to help you make an informed choice.

Here are the three best bathroom dehumidifiers 2021;

#1. Cosvii Mini Dehumidifier (Best Buy)

best dehumidifier

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Are you facing trouble with damaging moisture buildup in your bathroom?

The Cosvii Dehumidifier is compact and easy to use for small spaces of up to 480 Sq. ft. Cosvii comes out honest and says that this unit operates most efficiently at around 80% humidity, works slower at under 60% humidity, and won’t work at below 40% humidity.

The dehumidifier is among the best small dehumidifier with an ultra-quiet operation for the bathroom, closet, and RV. The Cosvii dehumidifier is effective in cleaning mold and mildew, and other damaging effects of moisture in the air, thanks to its double side air outlet.

Here are some features of the Cosvii Small Bathroom Dehumidifier.

Energy efficient

This electric dehumidifier will add more value to your home because it’s energy-star efficient. This is a great choice for small bathrooms as well as when traveling in an RV as power sources are limited. It consumes 48 watts per hour, which is 1.15 kW after running for 24 hours. Besides saving on bills, it’s also environmentally friendly than desiccant dehumidifiers.

Quiet – 40 dB

Users love this dehumidifier because you don’t have to deal with noise or vibration, especially when using it in an RV or bathroom. It emits less than 40 decibels noise even on 80% humidity, which is impressive. The Cosvii dehumidifier is ideal for a toddler who wants a quiet night.

Large 2000ml Tank

Despite being ideal for small spaces, this dehumidifier has a large tank to hold over 2000ml of collected water in a humid environment of 860F and 80% RH. The machine also comes with the auto-shutoff function with a red light that automatically turns it off when the tank is full. The large tank capacity also reduces the frequency of pouring water to save time.

One-touch control

Another nifty feature of the Cosvii bedroom dehumidifier is the one-button control that makes it easy to use for anyone. That way, you just press the start button, and it’s on – no special settings to get used to.

Compact design

This is one of the best small dehumidifiers for an RV weighing under 4 pounds. This means you can move it from one place to another without moving out other essentials. Its compact size also makes it great for small bathrooms.


  • It has a low power consumption
  • It’s ultra-quiet
  • It has a large tank with the auto-shutoff
  • It’s compact and weighs under 4 pounds


  • The adapter tends to overheat

#2. Gocheer Dehumidifier

Gocheer Dehumidifier

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Adding to this list of best dehumidifiers, we have this unit from Gocheer that’s effortless to use and removes up to 32oz. of moisture per day. It has simple but effective features to keep allergens, mold, mildew, dust mites, and dampness away from clothes, furniture, and your indoor space. The highly portable dehumidifier is straightforward to use, featuring a one-button start operation.

Read the features of the Gocheer dehumidifier that make it an outstanding unit.

2000ml water tank

This is a highly effective dehumidifier that can extract up to 1000ml each day at 860F and 80% RH, much better than other units. With such a large tank capacity, you do not need to empty it daily, even when running full time.


This mini-portable dehumidifier will shut off automatically once the water tank is full. However, a few users seem to disagree, saying that you need to check because the tank might overflow.

Nevertheless, there’s a red light when the tank is near full, and it’s really easy to remove and take it back into the dehumidifier. This ensures it does not overflow and damage your stuff or the room.

480 sq. ft. coverage

This is one of the best portable dehumidifiers for small spaces of up to 480 square feet, such as bathrooms, cabinets, office cubicles, and more. It’s also designed lightweight so you can carry it from one room to another.

Energy-star rated

This energy-saving unit will also keep your energy bills low and does better for the environment than the bulky compressor dehumidifiers. Gocheer equips the small unit with semiconductor condensation technology that ensures maximum water extraction while using minimum power.

40 dB noise level

This dehumidifier operates whisper-quiet producing less than 40dB giving you and your family a fairly quiet environment with less disturbance.


  • It’s easy to use for anyone
  • It’s suitable for small and medium-sized bathrooms
  • Ultra-quiet operation
  • It’s energy-star rated


  • A few customers said it might overflow if left unchecked

#3. Lonove Dehumidifier

lonove dehumidifier

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This white and blue dehumidifier is a little beast at moisture removal with a highly efficient dehumidification process that ensures the moisture in your space stays below 50%. It features both a front and back air inlet that works efficiently to extract moisture from the indoor air. Most users appreciate how the Lonove dehumidifier runs quietly and won’t disturb you if you are working or sleeping.

Here are the features of the Lonove dehumidifier.

Highly efficient

This dehumidifier is more effective than most other dehumidifiers, featuring the Peltier technology with a 3600 dehumidification to remove maximum moisture from the air. The Lonove dehumidifier works best in small rooms up to 190 sq. ft. This powerful dehumidifier controls the humidity at 50% – 60% to keep your environment more comfortable.

900ml water tank

This portable dehumidifier comes with a 900 ml water tank that absorbs up to 450ml per day at 860F and 80% RH. Although this is smaller than other similar models, you don’t have to empty daily. The auto-shutoff function makes it easy to know when the tank is full by showing a yellow light. At this point, the unit will automatically shut off to prevent overflow.

Portable and compact

This portable dehumidifier is small and lightweight, making it easy to move from one room to the next. You can use it in your bathroom to clean mildew and mold and then carry it to your bedroom to help you sleep better at night. Fortunately, the noise level is below 35dB, so there’s no sound to distract you.


  • It’s excellent for moisture removal
  • It’s easy to use
  • Great for small spaces
  • Super quiet dehumidifier


  • Works relatively slowly

Bathroom Dehumidifier Buying Guide

Why Do You Need a Dehumidifier?

If you are having second thoughts regarding whether or not to buy a dehumidifier for your bathroom, these benefits should convince why a bathroom dehumidifier is a great investment;

  • Prevent growth of mildew, molds, and allergens

By reducing the moisture level and humidity in your bathroom, dehumidifies will make your bathroom less prone to allergens. Mold and mildew thrive in a moist environment, and therefore, by reducing moisture, you deny them the ideal conditions for growth.

What’s more? By preventing the growth of mildew and molds, bathroom dehumidifiers help to purifier the air in your bathroom as mold and mildew cause unpleasant odors. Therefore, if you have been struggling with odors in your bathroom, a dehumidifier is one of the solutions.

The good thing is that this equipment keeps working quietly in the background and thus won’t interfere with your relaxing moments in the bathroom.

  • Minimize irritations to the respiratory system

If you are allergic to molds and mildew or excessive moisture, a dehumidifier can help you get rid of sneezes caused by spores from these allergens. Once you install a dehumidifier in your bathroom, you will notice an improvement in the quality of air.

  • Avoid damage to bathroom floors and paint

Excessive moisture can damage your flooring surface and paint. By installing a dehumidifier in your bathroom, you can prevent this from happening.

There are many other benefits of having a dehumidifier in your bathroom, but the above three should convince you why it is a sensible investment.

Now let’s discuss how to choose the best bathroom dehumidifier for your needs.

How to Choose the Right Bathroom Dehumidifier

There are several factors you need to put into consideration when buying a bathroom dehumidifier;

  • Coverage area

Different dehumidifiers have different coverage areas- this is the area a dehumidifier can effectively extract moisture from the bathroom. In most cases, this is expressed in volume form in terms of square feet, cubic feet, or Square meters.

Before you purchase a dehumidifier, it is important that you check the features of your unit and also get the estimated volume of your bathroom. You can easily calculate the volume of your bathroom by taking measurements for its height, length, and width. Multiply these measurements to get the volume in cubic meters.

When buying a humidifier, make sure that it exceeds the volume of your bathroom as erring on the lower side will make it inefficient in its job.

  • Energy efficiency

Dehumidifiers with Energy Star certifications are better than those lacking this certification as they use less energy. This not only helps you save on energy bills but also in environment conservation.

Therefore, choose an Energy-Star rated unit if you want to reduce your energy cost at home. The savings will go a long way in making your unit economical and cheaper.

  • Tank capacity

If you are to go for a dehumidifier that requires you to manually empty the tank, then you need to put tank capacity into consideration. The best bathroom dehumidifier should have larger water tanks so that you don’t have to empty them often.

To figure out how often you will be needed to empty the content of your dehumidifier tank, divide the tank capacity by the tank size. For instance, a unit with a 20 oz. tank and a moisture removal rate of 9oz per day mean that you will need to empty the tank every two days.

  • Dehumidifying rate

This shows the rate at which the dehumidifier can pull moisture from the bathroom in a day. The rate is normally expressed in pints, Oz, or gallons in a day. A good way of knowing how much humidity needs to be removed from your bathroom, use a hygrometer.

A hygrometer will give you accurate humidity levels in your bathroom, and this will help you know the right type of dehumidifier that you need.

  • Self-draining capabilities

If you don’t want to be concerned about emptying your dehumidifier tank, then you need to invest in a unit with self-draining capabilities. Usually, these units come with a hose that connects to the tank, thereby allowing you to drain this water to your drainage pipe or sink.

If you plan on leaving the dehumidifier running continuously throughout, then this is an important feature to consider. It saves you from the need to regularly checking the tank and discarding its content.

Other features to keep in mind;

  • Noise levels. Since most bathrooms are close to the bedrooms, you don’t want to have a noisy unit. therefore, check a unit with minimal noise levels
  • Size and weight. This is a consideration for people with small bathrooms. Make sure to go for a compact unit that doesn’t take a lot of space

By keeping the above factors in mind, you will have an easier time choosing the best dehumidifier for bathroom.

Final Verdict

A perfect bathroom environment is one that’s free from odor and allergens. Since these are caused by excessive moisture, it is, therefore, logical to invest in a quality bathroom dehumidifier.

The above three dehumidifiers have been proven to be effective at eliminating excessive moisture from moist indoor surfaces. You can never go wrong by choosing any of these three dehumidifiers.

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