Best Dehumidifier for Closet

Dehumidifiers come in a wide variety of sizes good for different types of space. If you need something compact and portable for your closet or any other tiny room, then you need a small dehumidifier that uses either a desiccant or the Peltier effect. When buying a closet dehumidifier, the first things to consider are the size of your closet and the amount of moisture inside. This way you can be sure that your dehumidifier will be effective and efficient.

Desiccant dehumidifiers use hygroscopic chemicals such as silica gel or calcium chloride. Meanwhile, Peltier dehumidifiers use a method of dehumidification based on thermoelectric cooling. Besides being small enough to fit in a closet, these dehumidifiers are particularly known for their whisper-quiet operation and inexpensive prices. So, if you notice a moldy smell or stale air inside your closet, then keep reading to find the best closet dehumidifier for you.

Best Closet Dehumidifiers Comparison Table

IMAGEPRODUCT
  • Dimensions: 5.5 x 2.5 x 5.5 inches
  • Moisture Removal Capacity: 4~6 oz
  • Weight: 1.8 lbs.
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  • Dimensions: 2.56 x 2.56 x 7.48 inches
  • Moisture Removal Capacity: 4oz/100ml
  • Weight: 16.23 oz
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  • Dimensions: 5 x 3 x 5 inches
  • Moisture Removal Capacity: 11.8 oz
  • Weight: 6.7 oz
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  • Dimensions: 7 x 6 x 11 inches
  • Moisture Removal Capacity: 250ml/9oz
  • Weight: 2.64 lbs.
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  • Dimensions: 10 x 6.26 x 4.61 inches
  • Moisture Removal Capacity: 10oz/300 ml
  • Weight: 1.69 lbs.
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  • Dimensions: 6.2 x 5.4 x 9.3 inches
  • Moisture Removal Capacity: 10oz/300ml
  • Weight: 2.2 lbs
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Reviews of Top 6 Best Closet Dehumidifier

Eva-Dry E-333 Rechargeable Dehumidifier

Eva-Dry E-333 RV Dehumidifier

Moisture Extraction: 4~6 oz.

Dimensions: 5.5 x 2.5 x 5.5 inches

Weight: 1.8 lbs.

For most closets with humidity problems, a wireless, mini desiccant dehumidifier may be all you need. The Eva-Dry E-333 contains silica gel beads that can adsorb moisture from the air. It doesn’t require batteries or electricity in order to operate, making it the perfect dehumidifier for closets with minimal space. It is also completely safe, non-toxic, and environment-friendly. 

Through the indicator window, you can see the silica gel beads change color from orange to green once they have absorbed about 4 to 6 ounces of moisture, which usually happens within 30 to 60 days. To recharge, just plug the unit into a power socket to dry out the moisture. This easy process can take about 8 to 12 hours. The beads can be renewed repeatedly for up to ten years and the unit comes with a five-year warranty.

As the name suggests, the Eva-Dry E-333 can cover an area of 333 cubic feet or around 40 square feet of closet space given an 8-ft height. However, this type of dehumidifier is not designed to reduce humidity levels in a regular room. The main purpose is to keep moisture out in tight spaces like closets, safes, and cabinets for storage without actively using electricity.

The Eva-Dry is extremely light and portable, weighing around 2 pounds. It is also available in twin packs or the larger E-500 model. If you want a spill-free dehumidifier that can easily fit in any closet, then Eva-Dry is your best option.

Pros
• Light and compact
• Cordless operation
• No batteries required
• Renewable and eco-friendly
• Five-year warranty
Cons
• Small absorption capacity
• Small coverage
• The recharging process can take a while

Afloia Cordless Dehumidifier

Afloia Cordless Dehumidifier

Moisture Extraction: 4oz/100ml 

Dimensions: 2.56 x 2.56 x 7.48 inches

Weight: 16.23 oz 

Similar to the Eva-Dry unit, this Afloia cordless dehumidifier requires no batteries or electricity to operate. It absorbs moisture from the air using renewable silica gel technology. The cylindrical surface increases the area of contact with moist air, making moisture absorption more efficient. This mini dehumidifier removes up to 4 oz or 100ml of moisture in spaces up to 54 square feet.

The silica gel crystals will change color from orange to dark green once they have removed all the moisture they can hold.

Through the top window, you can monitor the status of the silica gel so you can recharge the unit on time. Unlike other rechargeable dehumidifiers, only the heating base is wired, and the dehumidification stick itself is wireless. To dry the beads you just need to place the dehumidifying unit on the PTC heating base for about two hours. While recharging, the indicator light on the base will flash green. When recharging is done, simply pick up the dehumidifier stick and place it in your closet or any other small space with excess moisture.

Due to its design, the Afloia cordless dehumidifier is also ideal for use in a gun safe, cabinet, bathroom, kitchen pantry, and even a car, RV, or boat cabin. It comes with a one-year manufacturer warranty.

Pros
• Light and compact
• Wireless operation
• No batteries required
• Fast recharging process
Cons
• Small capacity
• Small coverage

airBOSS Closet Dehumidifier

airBOSS Closet Dehumidifier

Moisture Extraction: 11.8 oz 

Dimensions: 5 x 3 x 5 inches

Weight: 6.7 oz

Another type of desiccant dehumidifier is called moisture absorber which comes in a small container or packets with crystal-like beads that absorb moisture from the air. Unlike the Eva-Dry which can simply be heated to renew the desiccant, this type can only be used once then disposed of. The airBOSS closet dehumidifier contains 6.7 ounces of highly absorbent calcium chloride crystals, which can extract about 12 ounces of moisture in the air.

Aside from absorbing moisture, it will remove unpleasant odors and maintain fresh and clean air in a tight, enclosed space like a storage cabinet and closet or even a car or RV. In larger closets without electrical sockets nearby, you can keep a few of these moisture absorbers on each corner to keep moisture down. You can leave the dehumidifiers inside with no worries of spilling or leaking, as long as you place them on a flat and steady surface, like a shelf or counter. Check the water level at least every four weeks to make sure they’re working, and dispose of them properly once the lower container is full. 

When using disposable dehumidifiers, you may not notice a significant change in humidity right away. You’ll probably want to use multiple packs at once, or try a combination with another type of dehumidifier. Some brands also have hanging packets of moisture absorbers for even easier storage inside your damp closet or cabinet.

PROS
• Cheap and portable
• Easy to use
• No machine to operate
• No cords or batteries
CONS
• Very small capacity
• Not reusable

Pro Breeze Thermoelectric Dehumidifier

Pro Breeze PB-02-US Bedroom Dehumidifier

Moisture Extraction Rate: 250ml/9oz per day

Tank Capacity: 450ml/16oz

Dimensions: 7 x 6 x 11 inches

Weight: 2.64 lbs.

If you need a light, compact, and quiet dehumidifier you can easily place on top of a table or counter in your master closet, this Pro Breeze unit is for you. It is perfect for any space within 150 to 215 square feet. This tiny but effective electric dehumidifier extracts up to 9 ounces (250 ml) of excess moisture a day. The water tank has a capacity of 16 ounces (450 ml), which can hold at least two days up to a week’s worth of moisture.

This Pro Breeze unit uses Peltier technology or thermoelectric cooling for efficient, whisper-quiet dehumidification, which makes it a great dehumidifier for enclosed spaces and even sleeping areas. This unit is incredibly easy to set up and use with just a single button to turn it on or off. 

It is also equipped with the auto shut-off feature for when the water tank is almost full, along with a “Full” indicator light to notify you when this happens. Emptying the tank is a breeze with its simple design. Slide the tank out along the front of the dehumidifier, pull the drain plug, then pour the water into the sink, toilet, or drain.

If energy is your concern, the Pro Breeze dehumidifier runs on 23 Watts, which means it consumes about 0.55kW after 24 hours of use. Being light and portable, it can stand on top of a side table or shelf. However, you need to ensure there’s adequate space around the unit for proper air circulation. They work best in warm and humid climates between temperatures 56°F and 86°F and stop at 41°F. While it’s effective for several purposes it may be a bit overkill for spaces below 100 square feet.

Pros
• Small, lightweight, and portable
• Low energy consumption
• Whisper-quiet operation
• User-friendly controls
• Good for large closets
Cons
• Needs to be plugged in
• Have to empty the tank manually

Seavon Thermoelectric Dehumidifier

Seavon MD-819 Bathroom Dehumidifier

Moisture Extraction Rate: 10oz/300 ml per day

Tank Capacity: 27 oz (800ml)

Dimensions: 10 x 6.26 x 4.61 inches

Weight: 1.69 pounds

Another brand offering a range of mini dehumidifiers is Seavon. One of its “mid-sized” Peltier models is this unit with a 27 oz (800 ml) capacity tank that extracts up to 300ml per day. This means it can hold at least two days’ worth of dehumidification when running continuously. It is recommended for small spaces within 260 square feet, such as a large master closet. Since it uses Peltier technology, the unit doesn’t make a lot of noise while working. The working noise is 30 to 35 dB so it’s perfect to use at night or in a small bedroom.

This Seavon mini dehumidifier automatically shuts off when the tank is full and the indicator light turns red to remind you to empty the tank. This portable dehumidifier is very easy to use with only one button for your convenience. It has a transparent tank you can access from the back of the unit when you need to drain the water.

This small dehumidifier is perfect for your bedroom, bathroom, kitchen, or garage. If you don’t need it in your closet, you can move the dehumidifier from room to room easily. Like all Peltier dehumidifiers, the optimal operating temperature is 59°F to 104°F and it will not work below 41°F.

Pros
• Small, lightweight, and portable
• Low energy consumption
• Whisper-quiet operation
• User-friendly controls
• Good for large closets
Cons
• Needs to be plugged in
• Have to empty the tank manually

Pure Enrichment PureDry Mini Dehumidifier

Pure Enrichment PureDry Mini Dehumidifier

Moisture Extraction: 10oz/300ml per day

Tank Capacity: 27oz (800ml)

Dimensions: 6.2 x 5.4 x 9.3 inches 

Weight: 2.2 lbs

Pure Enrichment is a known brand that offers portable air quality solutions including mini Peltier dehumidifiers. The PureDry Mini dehumidifier is powerful enough to extract up to 10 oz or 300 ml of water from the air per day to keep moisture at bay and reduce the musty smell. It has a large enough tank with a 27-oz capacity that you’ll need to empty every few days. It may be able to hold even more than a week’s worth of moisture, but you must empty the tank as soon as you can so water doesn’t sit in the tank longer than it should.

This unit features a sleek and modern design with one button at the back and water level window on the front. The built-in indicator lights will let you know when you need to empty the tank. Green means the unit is running and red means the tank is full. Since PureDry uses Peltier technology, it works quietly so you can use it in any small space within 110 square feet like closets, bathrooms, small bedrooms, or trailers, and RVs. 

Weighing only two pounds, this small dehumidifier is easy to move from room to room, to extract moisture from the air where you need it most without looking out of place. For a larger bedroom or bathroom, you may also want to check out the higher capacity PureDry Deluxe model. Unlike other mini Peltier models, these units are guaranteed with a five-year warranty.

Pros
• Small, lightweight, and portable
• Low energy consumption
• Whisper-quiet operation
• User-friendly controls
• Good for large closets and other small rooms
Cons
• Needs to be plugged in
• Have to empty the tank manually

Do I Need A Dehumidifier In My Closet?

Condensation is the likely reason why moisture accumulates inside your closet. Cold air from the outside causes warm air from the inside to lose heat and the temperature differences will form water droplets or excessive moisture.

Moisture trapped inside the closet is bound to develop mold and mildew growth, causing musty smells on your clothes and apparel. Dirty clothes, wet towels, sweaty shoes, as well as dust and pest droppings will also contribute to the unpleasant odors that will greet you whenever you open the closet. This can also cause allergic reactions and damage fabrics and wooden materials over time. 

If you have moisture problems in your closet, baking soda and charcoal are some of the most common DIY remedies that you’ll find. These might work to some degree, but in the long run, a dehumidifier is still your safest bet. It is specifically designed to dehumidify the space with as little mess as possible. 

Once installed, they require little to no attention, except for the time you may need to recharge a desiccant like Eva-Dry or empty the tank in an electric unit. Even the electrical dehumidifiers consume very low power that you’ll hardly notice when they’re running. Overall, a dehumidifier is the most effective and efficient solution to excess humidity in a closet.

Types Of Closet Dehumidifiers and How They Work

Dehumidifiers use different methods to extract moisture from the air. They come in a wide range of sizes and capacities. Before anything else, it’s important to understand how these dehumidifiers work so you can choose the right type for your closet. Some may require electricity to run or to recharge, while some are disposable after one use. 

Desiccant Dehumidifier

The most common type of dehumidifier used in a closet is called a desiccant. It uses a hygroscopic chemical that extracts moisture from the air. It comes in a variety of sizes, from closet dehumidifier bags, disposable or refillable tubs, rechargeable units, to full-size consumer-grade models. Through a process of absorption or adsorption, moisture is transferred to the desiccant materials when the air comes into contact. 

The disposable kind uses a substance that absorbs moisture, like calcium chloride, and it cannot be reused once saturated. Moisture absorbers are the cheapest and smallest type of dehumidifier. However, they can only absorb a small amount of moisture within weeks or months as well as cover a limited area. 

On the other hand, a renewable closet dehumidifier like Eva-Dry uses silica gel beads. Moisture clings to the surface of the crystal beads then separates when heated or recharged. Unlike moisture absorbers, these units produce zero mess and can be reused for years. Although, they also have a smaller capacity and coverage area. 

Thermoelectric Dehumidifier

Another method that is used in small dehumidifiers for closet spaces is called the Peltier effect or thermoelectric cooling. It is based on the idea that a voltage of electricity can create a temperature difference on two sides of the Peltier module. Moist air is drawn into the unit by a small fan through the cold side where moisture condenses. The cold, dry air then passes through the hot side heat sink, and warmer, dryer air is released through this side. 

Peltier units collect the condensate in a tank that is usually large enough to hold multiple days’ worth of dehumidification. When full, you will have to empty this tank by hand or the unit will not run. This type of dehumidifier best works in temperatures between 56°F and 86°F. Because of this, desiccant dehumidifiers are the perfect choice in colder conditions.

Compressor Dehumidifier

Most people are familiar with compressor-based dehumidifiers for household use, but this type isn’t as common in closets. It uses a compressor to power the condenser and evaporator coils that remove moisture and warm the air simultaneously. A fan draws the moist air and passes it over the cold coils. As the air cools down, it loses its ability to hold moisture. Water droplets form and drip down into the tank, while dry and warm air is exhausted. Because the coils need to be colder than the air, this type of dehumidifier will not work in low temperatures. However, it’s the most effective and efficient in warm and humid conditions and larger spaces.

How to Choose the Best Closet Dehumidifier

Closet dehumidifiers are typically small and inexpensive but work very well when you use them for the right space. To avoid any disappointment after your purchase, consider the following factors to find the best dehumidifier for your closet.

Dehumidification performance

The total amount of moisture your dehumidifier removes mainly depends on the type you get. Disposable moisture absorbers can typically extract up to 12 ounces within weeks or months depending on the humidity and size of the space. Rechargeable desiccant units have a lower capacity of around 4 to 8 ounces but guarantee longer use due to their renewability.

Peltier dehumidifiers come in mini to large sizes. Although there isn’t a huge difference in the capacity, it’ll still help to know exactly how much moisture the unit is able to remove. The smallest models have a moisture removal rate of 6 to 10 oz per day, while mid-sized models have around 11 to 18 oz capacity. The largest units can remove at least 20 oz per day.

If you have more serious humidity problems in your closet area, then you may want a larger capacity that only a compressor dehumidifier can provide. The smallest models can remove about 14 pints of water a day or range up to 50 pints per day. 

Tank capacity

What’s great about disposable and rechargeable dehumidifiers is you don’t have to worry about emptying a tank every day or spilling water in your closet. However, if you have a large walk-in closet and adequate counter space for it, then it’s a good idea to use a dehumidifier with a tank. Unlike compressor-based dehumidifiers that need to be drained a few times a day, the Peltier type has a tank large enough to hold multiple days up to a week’s worth of moisture. The tank is usually very easy to remove, empty, and replace, but always make sure to empty the tank immediately and rinse it before reinstalling to avoid mold growth.

Coverage area

Disposable and rechargeable desiccant dehumidifiers are only good for tiny spaces like a closet, safe, storage cabinet, kitchen pantry, or even gym bags. They are mostly used to prevent odors caused by a buildup of moisture instead of removing significant amounts of water from the air. 

Meanwhile, Peltier dehumidifiers can usually cover around 100 to 200 square feet, but the performance may decline in larger spaces. Manufacturers indicate the recommended area it can operate on, sometimes in cubic feet instead of the more common square footage. Measure the length, width, and height of your closet to ensure that your dehumidifier is the right size. For large closets, you may consider using a combination of different types of dehumidifiers in the room.

Portability

Closet dehumidifiers are generally very light and portable. With the exception of the Ivation compressor dehumidifier, the smallest units weigh less than 2 pounds, and the largest thermoelectric models 6 to 7 pounds. If you want to use your dehumidifier on top of a shelf or counter, for example, it will be helpful to know the dimensions and weight to ensure it can fit where you need it. 

Design and Other Features

Closet dehumidifiers have a very basic design, you can just leave them in a corner and come back after a few weeks to recharge, refill, or replace. If you have limited shelving or counter space, you must look for a dehumidifier that’s safe from spills or leaks such as hanging moisture absorbers or cordless desiccants. For larger closets, Peltier dehumidifiers come with just a single button for the power switch. While this limits your control over the settings, it usually isn’t a big deal for closet use.

Where to Place a Dehumidifier in the Closet

photo of closet with a closet dehumidier

You can place a desiccant dehumidifier almost anywhere in your closet. However, the best location depends on where the humidity is causing the most damage. If you are noticing mildew at the bottom of your wardrobe, closet, or drawers, you should ideally get a disposable or refillable cup. In this case, make sure you place the cup on a sturdy surface or against a wall. Some closet dehumidifiers (moisture absorbers) come in a hanging bag so you need not worry about where you can put it. 

If you have a walk-in closet, you may opt for larger dehumidifiers you can place on a table or counter in the center of the room or closest to where humidity is present. Wherever you place your dehumidifier, it will remove moisture effectively as long as you follow the recommended coverage areas.

Ways to Lower Humidity in Closet

To reduce the moldy odor and stop excess moisture once and for all, find the sources of humidity and remove them from the closet. To keep moisture out of the closet, here are some basic measures you need to do.

Firstly, ensure that clothes, linens, towels, or other items you store are washed and dried before putting them in the closet. Never store worn or dirty clothes in the closet because soil and dirt could be filled with contaminants that will spread to your clean garments.

Do not pack your clothes too tightly and leave some space to promote airflow inside the closet. When washing clothes, avoid drying them near the closet. If possible, hang them outdoors. 

Keep the doors closed if your closet is located in a high humidity environment like a bathroom or basement. Even better if you can install an exhaust fan or cabinet ventilation to improve air circulation. You can also add insulation to the walls or ceiling to maintain temperature and reduce condensation.

Lastly, a natural desiccant dehumidifier will absorb excess moisture in the closet. You can easily find some from your kitchen pantry, like baking soda (sodium bicarbonate), salt (sodium chloride), or charcoal briquettes. Put them in a bowl or can with a lid and check from time to time to replace the contents.

FAQ

Why is my closet so humid?

A tightly packed closet traps moisture because the air can’t circulate. Closets can be havens for both mildew and mold because the limited air movement allows humidity levels to rise quickly.

Do closet dehumidifiers work?

Like any other household dehumidifier, the effectiveness of closet dehumidifiers depends on whether you get the right one for your closet’s size. Having the right dehumidifier in your closet helps to prevent moisture buildup, as well as bacteria and mold that thrive in moist conditions, from causing damages.

How long do closet dehumidifiers last?

Dehumidifier life depends on the type you use. Disposable moisture absorbers work to absorb all the moisture it can hold for up to four to six weeks. A rechargeable dehumidifier works for 20 to 30 days on a single charge and reactivates the silica gel beads within a few hours. Thermoelectric and compressor dehumidifiers can last for years depending on your usage and maintenance.

Does a closet need ventilation?

A lot of closet doors have louvers to regulate airflow or allow air and light in while keeping moisture out. Likewise, a walk-in closet needs proper ventilation. You probably don’t want to dress in a stuffy room. Proper ventilation will also help to protect your clothing, shoes, and other items you store in the closet.

Conclusion

Closet dehumidifiers require little to no maintenance. The most you’ll have to do is refill a cup or recharge your dehumidifier. If you need a larger dehumidifier, prepare to allot some time to empty and clean the tank properly to prevent mold growth inside the unit. To keep moisture and mold out of your closet, make sure to use the correct type and size of the dehumidifier. Maintain a distance from your clothes and other objects to promote airflow. Before you start using a dehumidifier in your closet, get to the root cause of humidity to find proper actions. You can use our guide above or choose from our top picks to help you get started on your search

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