Best Dehumidifiers for Bathrooms – Reviews and Buying Guide

It is not surprising that the bathroom is the most humid room in your entire home because of the presence of plenty of running water, showers, and inadequate ventilation. Showers can make your bathroom especially very muggy and cause moisture and water droplets to cling onto the walls, mirrors, and windows. Excessive humidity can cause degraded drywall, bubbled paint and also provide a breeding ground for mildew, mold, and dust mites. According to the EPA, mold growth occurs if the relative humidity is over 60%, and so, your objective should be to maintain the moisture level in your bathroom to be under this level even after you have showered.

It is a good idea to run your exhaust fan during your shower and after you have one, and if the weather is warm, then leaving a window open for a while can help to reduce humidity. However, if you cannot do either of these things or if these measures are not sufficient to control the humidity, then the best option is to buy a good dehumidifier for your bathroom.

The humidifier for the bathroom can help to optimize the humidity levels by extracting the excess moisture so that the proliferation of allergens is prevented, and it also helps to eliminate the musty odor caused by dampness. However, finding the right type of dehumidifier that is compact to handle the humidity issues and one that is strong enough to handle the moisture levels can be tricky, and in our article, we have given you a complete lowdown on the dehumidifiers that can tackle the humidity in your bathroom and also a buying guide that can help you choose the favorite dehumidifier for your home.

 Best Dehumidifiers for Bathrooms

  • Best Overall — Frigidaire 30-Pint Dehumidifier: This is a refrigeration dehumidifier and can extract around 224oz. of moisture daily while being compact and ultra-quiet.   
  • Budget PickEva-Dry E-333 Renewable Dehumidifier: The small and compact dehumidifier does not need electricity or batteries to run. By recharging once in 8-10 weeks, the unit will give 10 years of continuous operation.
  • Dehumidifier for Small BathroomshOmeLabs Small Space Dehumidifier: The compact dehumidifier is completely safe for use, with its LED indicator light and auto-shutoff feature.
  • Portable DehumidifierHysure Dehumidifier: The Peltier dehumidifier is lightweight and compact and covers up to around 215 sq. ft. with convenient single-button control.
  • Mid-Sized DehumidifierIvation IVADM35 Thermo-Electric Dehumidifier: Ideal for spaces of up to 2,200 cubic feet, the unit is suitable for places with high humidity levels.

Frigidaire 30-Pint Dehumidifier with Humidity Control

If you’re looking for a compact and portable dehumidifier that can extract the excess moisture from your bathroom effectively, then the Frigidaire 30-Pint humidifier is an excellent option. The unit is energy-efficient, and it has electronic controls that include a 24-hour on/off timer, digital humidity readout, and a control lock. The dehumidifier features a water bucket that is very easy to empty, or you can place it near a drain for continuous drainage. The unit offers Effortless Humidity Control, which lets you control the exact humidity in the room easily. The Frigidaire dehumidifier’s SpaceWise design with its handles on the top and sides and the caster wheels makes the unit portable.


  • Tank Capacity: 120 oz.
  • Ready-Select controls
  • Effortless Humidity Control
  • Washable filter (removable)
  • LED display
  • 24-hour on/off timer
  • Digital humidity readout
  • Control lock
  • Auto switch-off
  • SpaceWise design
  • 4 caster wheels
  • Energy Star certified
  • 1-year warranty on parts, 5-year limited warranty on sealed system


  • Whisper-quiet operation
  • 3-speed settings – low, medium, and high
  • Modern design
  • Full tank alert system


  • The unit switches off/on frequently
  • The unit’s humidity sensor placing is poor

Eva-Dry E-333 Renewable Mini Dehumidifier

If you’re looking for a super-quiet and affordable dehumidifier that will also keep your bathroom dry, then the Eva-Dry E-333 is a great option. The desiccant dehumidifier makes use of silica gel crystals, which absorb the moisture. Once the crystals have reached their absorbing capacity, the color changes from orange to green, and the dehumidifier must be recharged. The Eva-Dry E-333 can remove around 8-10 oz. of moisture from the air and lasts for around a month before it needs recharging, and it lasts up to 10 years before it requires to be replaced. The Eva-Dry E-333 is ideal for small bathrooms of up to around 333 sq. ft., which are not very humid.


  • Desiccant dehumidifier
  • Capacity: 4-6 oz.
  • Lasts for around 20-30 days before recharge.
  • Up to 333 sq. ft.
  • Works for up to around 10 years
  • 100% renewable
  • Mess- and spill-free
  • Non-toxic, pet and child safe


  • Does not need batteries or electricity for operation.
  • Long-lasting.
  • No risk of breakdown as it does not have any moving parts.
  • Inexpensive.


  • It takes a long time to recharge.
  • It is not as quick performing as the electric models.

hOmeLabs Small Space Dehumidifier

If you’re looking for a small, compact and inexpensive dehumidifier for your bathroom, then the hOmeLabs Small Space Dehumidifier is a great choice. The unit works on Thermoelectric Peltier technology, and it can cover a 150 sq. ft. room and remove around 9 oz. of moisture from the air making the dehumidifier suitable for small bathrooms. The unit has an LED indicator that alerts you when the water tray needs to be removed and emptied, and the auto-shutdown feature turns off the dehumidifier to prevent the water from overflowing. The cheap price of the dehumidifier from hOmeLabs makes it a bargain buy if you want to save money.


  • Dimensions: 6.5” x 5.3” x 8.5”
  • Capacity: 16 oz.
  • Extracts moisture up to 9 oz.
  • Thermoelectric Peltier technology
  • Energy efficient
  • ETL-certified 25W adapter
  • Automatic shutoff
  • LED indicator light


  • Quiet operation
  • Low energy consumption
  • Safe for use
  • Compact, lightweight, and portable


  • Does not have external drainage
  • Capacity is quite low.

Ivation IVADM35 Mid-Size Thermo-Electric Dehumidifier

The IVADM35 dehumidifier from Ivation is an excellent device for small spaces, bathrooms, and areas with high humidity levels. The unit works using the Peltier as well as ERS technology. The dehumidifier can extract around 12 oz. of moisture, and the capacity of the tank is around 22 oz. When the water tank is full, the device automatically shuts off, and the LED indicator light turns from blue to yellow, which means that the water needs to be emptied. The Ivation IVADM35 is an effective mid-sized model that uses whisper-quiet Peltier technology, and the compact dehumidifier is lightweight, powerful, effective, energy-efficient, and long-lasting.


  • Dimensions: 8.5” x 14″ x 6.75″
  • Weight: 4.45 lbs.
  • Peltier technology
  • Tank Capacity: 22 oz.
  • Extracts up to 12 oz. of moisture
  • Auto-shutoff
  • LED indicator light


  • Ideal for spaces of up to 2,200 cubic feet.
  • Removes moisture, dust particles, mustiness, and unpleasant odors.
  • The ERS technology allows greater extraction of moisture.
  • The power requirement is very low.


  • It May is not effective if used for prolonged periods of time.
  • The adapter may get quite hot.

Hysure Dehumidifier

The Hysure Dehumidifier is a compact ultra-quiet dehumidifier that makes use of the Peltier technology. The unit has a tank capacity of 24 oz. and offers dehumidification of up to around 10.3 oz. The unit is equipped with an auto-shutoff safety feature and the LED light alerts that the tank is full. The dehumidifier is compact and lightweight which lets you carry it and set up the device anywhere at all. The unit works well for a 215 sq. ft. space. The unit is very simple to operate using the button which is at the top of the device and it consumes minimal electricity and is economical too.


  • Peltier technology
  • Tank Capacity: 24 oz.
  • Auto-shutoff safety feature
  • Ultra-quiet operation, less than 33 dB
  • Weight: 27 lbs
  • Energy saving
  • Auto-shutoff
  • 24-month warranty, 30 days exchange, or money-back guarantee


  • Effective for small-sized bathrooms
  • Eco-friendly dehumidifier
  • Very easy control


  • Does not have the facility of external water drainage
  • Capacity is quite low

Buying Guide

Why Do You Need a Dehumidifier for Your Bathroom?

Bathrooms contain water and moisture and provide the ideal warm and humid environment — hot showers, which produce plenty of steam, water that is spilled, splashed or leaking, and inadequate ventilation because of limited space, all are perfect conditions for mold, mildew, and microbes to thrive and grow. Microbes make us susceptible to allergies and other types of respiratory ailments, while the presence of mold and mildew spoil our personal belongings, clothes, the structure of your home, etc., and also cause unpleasant and musty odors. You need to dehumidify your bathroom to extract and remove the excess moisture so that the air is clean and breathable and the filters of the dehumidifiers also help to eliminate the allergens.

Types of Dehumidifiers

There are basically 3 types of dehumidifiers – electric, mechanical, and desiccant.

Electric Dehumidifiers

Also called the Peltier or thermoelectric dehumidifiers, electric dehumidifiers make use of the Peltier module to work, an electronic device that uses electricity in order to create a temperature difference in the 2 heat sinks on each side. The moisture is pulled into a reservoir when the warm and moist air passes via the cold heat sink and the hot heat sink causes the air to be heated up and releases it into the air. Electric dehumidifiers are small because they don’t have a compressor or a pump and only use an electric module, a fan, and 2 heat sinks, which is why electric humidifiers are very quiet. The limitation is that electric dehumidifiers can’t work without electricity and also has a lower dehumidification rate when compared to desiccant and compressor models. 

Mechanical Dehumidifiers

They are also called compressors or refrigerant dehumidifiers and they work when warm air is passed over a refrigerated coil that causes condensation, which is pumped or dripped into a tank. The cool air is then heated and sent back into the room. The dehumidification process is hastened by the pump which draws in and emits large volumes of air. Mechanical dehumidifiers are bigger, heavier, and louder because they contain additional components such as the compressor, pump, and fan. These models remove the moisture the best.

Desiccant Dehumidifiers

They are also called chemical absorbent dehumidifiers and do not need electricity. The air is drawn to the desiccant by the rotor which removes the moisture through the process of adsorption. When the desiccant is saturated with moisture, it is then heated to release the moisture that is trapped within so that it continues to extract the water from the air. The biggest plus of the technology is that it is very effective in very low temperatures since the adsorption rate of the desiccant is not affected by the temperature of the room and it can last for several weeks or months before recharging.

Air Purifiers vs Dehumidifiers

Both air purifiers, as well as dehumidifiers, help to minimize allergens and make it easier for people suffering from allergies, asthma, and other respiratory ailments. An air purifier circulates the air through a filter which traps dust, pollen, smoke, and other airborne pollutants and irritants. A dehumidifier, on the other hand, extracts the moisture from the air and reduces the humidity levels, thereby killing microbes, mold, etc. that grow and thrive in the presence of moisture.

Related article: Air Purifiers Reviewed

Things to Consider While Choosing a Bathroom Dehumidifier

When choosing the right dehumidifier for your bathroom, you must evaluate the various models on the basis of the following factors:

The capacity of Water Tank

The more the moisture extraction rate, the more volume the water tank can retain, and the greater the capacity, the less frequent is the need to empty out the water tank. Some of the newer models have a continuous drainage feature, where a hose is attached to the water tank and the water is drained into the sewage or sink directly.

Dehumidification Performance

It is essentially the moisture extraction capacity of the dehumidifier. This can help you to get the right type of humidifier for the humidity levels in your bathroom. Since bathrooms typically have humidity levels, you should opt for a dehumidifier with a high rate of dehumidification.

Coverage Area

You must match the dehumidifier to the bathroom size so that the appliance that you choose can process the quantity of air in the space effectively and you don’t land up with a device that does not perform well.

Sound Level

Most of the dehumidifiers have a fan and the speed and size of which affect the noise of the device. Some models also have compressors, pumps, and other moving parts which generates substantial vibration and buzzing noises. You could opt for a dehumidifier that has multiple speed options so that you can operate it at a lower speed for quiet operation.

Size and Weight

The size, as well as the weight of the dehumidifier, must be decided by the level of humidity and the space that must be covered. Portable units are lightweight and compact, which makes them quite convenient to install in spaces that are tight and also convenient to move. The size of the dehumidifier and the weight indicates the coverage area, capacity or water tank, and type of unit.

Additional Features

Look for additional features which improve the convenience of the dehumidifier and also saves energy, time, and money and will add to the moisture extraction experience such as auto-shutoff feature, full tank alert indicator to avoid spillage, multiple speed settings, delayed start timer, programmable humidity controls. Continuous drainage options, washable filter, caster wheels for easy maneuverability, Energy Star rating, etc.

Dehumidifier – Do’s and Don’ts


  • Ensure that you get the right dehumidifier with the proper moisture extraction capacity according to the size of your bathroom.
  • Leave around 6 inches of space around the dehumidifier to enable free circulation of air.
  • Clean the inlet and outlet frequently.
  • Ensure that the filter is cleaned regularly to prevent allergens and clogging.
  • Before emptying the dehumidifier or cleaning it, unplug it from the power outlet.
  • Ensure that the power cord is kept away from water and kids.


  • Don’t forget to empty out the dehumidifier regularly.
  • Don’t forget to vacuum the floors before switching on the dehumidifier, so that it does not cause the dust particles to spread.  
  • Avoid using the dehumidifier to correct serious damp problems.


What is the ideal humidity level?

It is ideal for most spaces to have a relative humidity of 45 to 50%. If the humidity level is more than 50%, it can create an environment conducive to mold, bacteria, dust mites, and insects like cockroaches, etc. to thrive. Relative humidity below 30% is also harmful because an environment with low humidity can cause irritated respiratory passages, skin, an increase in cold and flu causing viruses, separated wood floors, cracked ceilings, etc.

When the dehumidifier is in operation, is it safe to take a shower?

While it is fairly safe to shower while the dehumidifier is working; however, it is not recommended. There is a risk of water splashing on the appliance and the dehumidifier being overworked to reduce the warm and moist air that is produced by the hot steam.

Can the dehumidifier cause health problems?

Dehumidifiers are very safe to use and in fact, they improve your health by removing all the airborne dust mites, microbes, mold, and mildew.


Choosing the dehumidifier for your bathroom can be tricky; however, thanks to our review of the best dehumidifiers and buying guide, we hope that you can find a model that suits your personal needs perfectly. You must remember that the good dehumidifier is effective only when it is used properly and in the right type of setting. So, take time and measure your bathroom and determine the humidity levels before making your final choice.

Last update on 2021-07-29 at 14:53 / Affiliate links / Images from Amazon Product Advertising API

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