The primary function of a dehumidifier is to maintain optimum levels of indoor humidity. Lower humidity and moisture levels promote unfavorable conditions for mold, mildew, dust mites, and other airborne allergens, thus eliminating unpleasant odors and improving the air quality. A less humid environment also helps preserve goods and protect equipment in storage.
Dehumidifiers come in all sizes for all types of residential and commercial purposes. They can be portable for site to site application or installed permanently for constant humidity control. A wall-mounted dehumidifier saves valuable floor space. They are ideal for rental apartments, residential areas, and various commercial spaces.
To find the best wall-mounted dehumidifier for your application, consider the following units we picked to help you.
Best Wall-Mounted Dehumidifier Reviews
|Moisture Removal (80°F, 60% RH)||24 pints per day|
|Coverage Area||3,000 cubic feet|
|Operating Range||33°F to 95°F|
|Airflow (cubic feet per minute)||170 CFM|
|Maximum Wattage||510 W|
|Dimensions (H x W x D)||12 x 14 x 22 in.|
|Warranty||1-year unconditional3 years on compressor, condenser, evaporator|
The Ebac CD30-SE dehumidifier is the smallest in our list in terms of moisture removal capacity. This portable, heavy-duty dehumidifier is built for high humidity environments. It gives you the flexibility to move from site to site or permanently install the unit using the included wall mounting bracket and installation kit.
The CD30-SE, as well as its CD30-S counterpart, removes 24 pints of moisture under AHAM conditions of 80°F and 60% RH, and covers up to 400 square feet. The adjustable humidistat allows you to set a humidity level. The dehumidifier cycles on and off to maintain this preferred humidity while saving energy. When humidity rises, an alarm will alert you in case you need to adjust the setting manually. The unit also has an hours run meter to keep track of operating hours.
For continuous moisture removal, the unit includes a 9.8-feet long drain hose you can connect to the drain outlet and direct to a low-level drain. Equipped with a Hot Gas defrosting system, the CD30-SE operates in low temperatures. From 33°F and below, the unit stops operation to quickly melt away any frost buildup, ensuring that the unit works efficiently with little downtime.
This rugged dehumidifier features a highly durable, epoxy-coated steel case that’s built to last a long time. Additionally, it comes with carrying handles on top of the unit for easy transport. If you opt for permanent installation, the leveling feet help keep the unit stable. One downside is it doesn’t have a humidity display to show the current humidity and the set humidity.
The additional features of the CD30-SE include the alarm humidistat with voltage free connector, power on indicator, hours run meter, and wall mounting brackets. This unit is ideal for equipment storage areas and other applications that require remote monitoring.
|Moisture Removal (80°F, 60% RH)||95 pints per day|
|Coverage Area||1,700 square feet|
|Operating Range||41°F to 95°F|
|Airflow (cubic feet per minute)||294 CFM|
|Maximum Wattage||920 W|
|Dimensions (H x W x D)||29.5 x 26 x 13.5 in.|
|Warranty||3 years on compressor and sealed components1 year on other parts|
The Ebac AD850E dehumidifier has an AHAM capacity of 95 pints. It is ideal for damp to extremely wet areas up to 1,700 square feet. It can stand upright on the ground or any level surface. To save floor space, it can also be mounted on the wall for permanent installation.
It features a built-in humidistat with digital display and soft-touch controls that allow you to set a humidity level and choose between the two fan speeds. The unit automatically shuts off and back on to maintain the desired humidity and save on operating costs.
The collected moisture is automatically drained through the built-in condensate pump. However, a drain hose is not included with the unit. Similar to most compressor-based dehumidifiers, the AD850E operates efficiently down to 41F with an auto defrost functionality.
The unit has two removable and washable filters for added protection against impurities in the air. It also features a cross-flow blower-style fan for silent operation at 50 decibels or lower. With its stylish, modern design and neutral color, the Ebac AD850E dehumidifier is the perfect choice for constant humidity control in commercial spaces such as indoor pools, spas, museums, offices, and hotels.
|Moisture Removal (80°F, 60% RH)||62 pints per day|
|Coverage Area||7,062 cubic feet|
|Operating Range||33°F to 105°F|
|Airflow (cubic feet per minute)||360 CFM|
|Maximum Wattage||900 W|
|Dimensions (H x W x D)||19.4 x 22 x 11.4 in.|
|Warranty||1-year unconditional3 years on compressor, condenser, evaporator|
The Ebac WM80 dehumidifier removes 56 pints of moisture per day from a 7,062 cubic feet space or an area of up to 1,500 square feet. This rugged dehumidifier has sturdy rubber feet for freestanding application. It can also be mounted on a wall to save on space. The unit includes a wall-mounting kit complete with the necessary tools and step-by-step instructions.
Like most commercial dehumidifiers, the unit has an onboard adjustable humidistat to set a humidity level depending on your preferences. The dehumidifier automatically starts when humidity rises above your setting and shuts off when the setting is achieved. This unit allows for continuous drainage with the included 25.5-ft long drain hose.
The WM80 is also equipped with a Hot Gas defrosting system that enables low temperature operation down to 33F. The unit automatically defrosts when ice is detected on the coils. It has “Drying” and “Defrost” indicator lights below the power to tell you what mode the unit is currently operating in.
The efficient yet quiet cross-flow fan runs at one speed with 360 CFM power. The unit comes with a removable and washable air filter. It also has a long power cord for easier access to power supply. This dehumidifier is coated with epoxy powder to handle a wide range of applications. This includes swimming pools, storage areas, offices, restaurants, laboratories, and pumping stations.
|Moisture Removal (80°F, 60% RH)||74 pints per day|
|Coverage Area||3,000 square feet|
|Operating Range||-4°F to 104°F|
|Airflow (cubic feet per minute)||235 CFM|
|Maximum Wattage||1400 W|
|Dimensions (H x W x D)||13.6 x 13.9 x 24.8 in.|
In extremely low temperatures, a desiccant dehumidifier is the best choice. The Ecor Pro DryFan EPD200 operates in a wide range of temperatures, from as low as -4F, to as high as 104F. The small durable metal casing allows for flexible installation. The unit may be mounted upright, on its side, or upside down – on the floor, wall, or ceiling.
This light and compact dehumidifier removes 74 PPD under AHAM conditions and up to 95 PPD at saturation. It has an airflow rate of 309 CFM and covers an area of 2,000 square feet.
It uses the four hole system where there are two separate inlets and outlets for the process air and regeneration air stream as well as two internal fans. The second fan allows for pressure-neutral drying wherein only the processed air comes into the room while all of the moisture is vented outside. You also have multiple ducting options for this unit.
The stainless steel interior and exterior of the unit can handle harsh conditions and last for a long time. It is highly resistant to salt air and other harsh environments, making it ideal for sea vessels, boats, yachts, and other maritime applications.
The Ecor Pro DryFan line dehumidifiers are also used in food storage and preparation, catering, and hygienic areas. The unit self-regulates to maximize energy efficiency at any temperature and humidity level. It comes with a dust filter that can easily be shaken clean or replaced.
It also features auto restart in case of a power interruption. You may connect the Ecor Pro EPHUM220 humidistat for remote operation and control. If you experience extremely cold winters, this dehumidifier is a great investment for both commercial and residential applications, including whole-house dehumidification. Install it in your crawl space, garage, laundry room, or other cold and damp areas. One thing to keep in mind is that desiccant dehumidifiers typically come at a higher cost than their refrigerant counterpart.
|Moisture Removal (80°F, 60% RH)||33 pints per day|
|Coverage Area||1,200 square feet|
|Operating Range||49°F to 95°F|
|Airflow (cubic feet per minute)||155 CFM|
|Maximum Wattage||305 W|
|Dimensions (H x W x D)||30 x 14.18 x 5.75 in.|
|Warranty||4 years on parts1 year on labor|
The UltraMD33 In-Wall dehumidifier (previously Ultra-Aire MD33) is the first of its kind. It is specifically designed to fit between two wall studs. This allows for a quiet and effective moisture removal up to 33 pints per day in areas 400 to 1,200 square feet.
Simply set your target humidity level on the humidistat control internally mounted behind the front cover and the dehumidifier maintains it automatically. If the humidity rises above your setting, the dehumidifier will start working. The return air comes in from the bottom and lower openings on each side of the front panel. Supply air is released on the top and upper openings.
The UltraMD33 has a lighted display, user adjustable setpoint, and a tamper-proof cover protecting the power button (which is placed behind the diffuser). This limits the access to the controls, which makes the unit ideal for hotels, apartments, senior living centers, or student housing. There’s no tank you need to empty. Attach the included drain hose from the drain port to your HVAC drain to automatically remove collected moisture.
For installation, you’ll need to cut through both walls to get an opening of 14.5 inches across and 30.25 inches tall. Purchasing the unit will include the diffuser cover with filter, a drain hose and clamp, and all the screws you need for installation, as well as the manual for instructions. Professional installation is recommended, but anyone can easily follow the manual.
This durable and efficient dehumidifier comes with a four-year warranty for your ease of mind. For optimum operation, clean the filter and diffuser regularly.
|Moisture Removal (80°F, 60% RH)||29.5 pints per day|
|Coverage Area||1,500 square feet|
|Operating Range||46°F to 95°F|
|Airflow (cubic feet per minute)||155 CFM|
|Maximum Wattage||300 W|
|Dimensions (H x W x D)||30.375 x 17.25 x 5.75 in. (In-Wall)27.625 x 14.25 x 5.75 in. (On-Wall)|
This innovation offers unique options for different dehumidification needs. The Innovative Dehumidifier Systems in-wall dehumidifier fits into 2×4 or 2×6 walls between two 16-inch wall studs. The on-wall dehumidifier is mounted directly onto surfaces such as drywall, concrete, stone, or plaster. These dehumidifiers are Energy Star rated for a quiet and energy efficient operation.
At 45 dbA noise levels, they are quieter than the average dehumidifier for homes, while effectively removing excessive moisture. These dehumidifiers feature an in-built humidistat and no tanks. The humidity can be set from 36% to 90%. The included hose allows for continuous drainage via gravity. Alternatively, you can purchase a condensate pump to connect to your existing plumbing.
The detachable front cover guards the washable filter and digital controls. The IW25-4 Wall Dehumidifier includes an LED light to alert you when you need to clean or replace the filter.
The Innovative Dehumidifier Systems IW25-4 comes with a long five-year warranty. It can be easily installed without a professional. The dehumidifier is built with microchannel condenser coils and aluminum evaporator coils for higher durability.
How Does a Dehumidifier Work?
No matter the size and application, the basic purpose of a dehumidifier is to reduce humidity. This can be done through different methods. The two main types of dehumidifiers are classified by the dehumidification process they employ.
Refrigerant dehumidifiers are what most homeowners are familiar with. This type primarily uses condensation to reduce moisture in the air. A fan draws humid air and passes it over the refrigerant coils. As the temperature decreases, the air loses its ability to hold water vapor. The moisture then condenses into water which drips into a tank or flows out through a drain hose. Once the moisture is extracted, the dryer air is then reheated before it is exhausted back into the room.
Because of its dehumidification process, a refrigerant dehumidifier is most ideal to use in warm and humid climates. It works more effectively and efficiently in temperatures above 65°F with 60–80% relative humidity.
Since this type of dehumidifier works with cold coils, it is precursory that the air be warmer than the coils or the moisture will not condense. Because of this, most refrigerant units can only dehumidify in temperatures as low as 41°F, while their efficiency starts to decrease at 55°F.
Additionally, condensate may start freezing inside the machine when temperatures drop to 65°F/18°C or below. To avoid this, most refrigerant dehumidifiers feature an auto defrost function which automatically pauses operation to melt any ice that has built up on the coils.
Commercial grade refrigerant dehumidifiers, like most of the units we featured above, use advanced technologies to allow operation in lower temperatures with less downtime. This saves energy and ensures that the unit is working as desired.
The second type of dehumidifier is called a desiccant. There are also different types of desiccant dehumidifiers depending on the capacity, area of coverage, and renewability.
Full-size desiccant dehumidifiers are about the same in appearance as refrigerant models but lighter and quieter since the desiccants do not use compressors. Instead they feature a rotating wheel that is filled with a hygroscopic chemical such as silica gel.
Commercial desiccant dehumidifiers feature a larger desiccant wheel and work with two separate air streams. Humid air from the room is drawn into the dehumidifier and runs through the process zone of the desiccant wheel. Moisture clings to the surface of the desiccant material, thereby separating from the air molecules. The now dryer and warmer process air then exits the dehumidifier.
A heater warms the second air stream before it passes through the remaining part of the rotor in the opposite direction of the process air. Moisture is then transferred from the desiccant to the regeneration air. This reactivates the desiccant so it can remove moisture again. The warm and humid regeneration air is vented to the outside of the controlled space. These two processes occur continuously and simultaneously and the cycle repeats.
A desiccant dehumidifier is the ideal choice in cold temperatures and low humidity conditions. Because desiccant dehumidifiers don’t work through condensation, they don’t need to cool the air further in order to remove the moisture. As opposed to refrigerant models, there is almost no risk of frost buildup since there is no condensate formed and the heater constantly warms the inside of the machine.
Extremely low humidity levels may be needed to remove moisture from materials that are very difficult to dry. This includes construction materials, newly built structures, and water restoration sites. Hardwood floors, walls, and water damaged basements or crawl spaces that refrigerant models cannot handle may need a desiccant dehumidifier.
Factors to Consider Before Buying a Dehumidifier
There are a few factors you must first consider before buying any dehumidifier. Wall-mounted dehumidifiers satisfy some very particular needs, and for this reason they cost more than the typical portable dehumidifier. A dehumidifier is an investment and you want to make sure you are getting the most of it. To do this, consider the following features before you make a purchase.
One of the first things you need to consider is the amount of moisture the dehumidifier can remove per day. We measure this in two ways.
The AHAM capacity is the amount collected at the average condition of 80°F and 60% RH, as recommended by the Association of Home Appliance Manufacturers. This is closer to the actual performance of the dehumidifier in real life settings. The maximum capacity is the largest amount that it can extract per day at saturation (90°F and 90% RH).
The size of the dehumidifier you need mainly depends on the application. To further determine which pint capacity is best, get the dimensions of your space and measure the humidity level. A larger space requires a larger capacity. At the same time, higher moisture content calls for a more powerful dehumidifier. However, this doesn’t mean that you should get the highest capacity you can find. Use only the right size for your space to maximize its effectiveness and efficiency.
You want to get a dehumidifier that can cover as much space as you have. The efficiency of the dehumidifier will also depend on the amount of space that it has to cover. You can expect a dehumidifier to accomplish its task more quickly in a smaller area than a larger one with equal humidity levels.
Another specification to note is the airflow. Measured in cubic feet per minute (CFM), this is the volume of air that flows through the dehumidifier per unit of time. Typically, a higher airflow rate means a larger coverage area and higher capacity, but it can vary greatly between different brands and models.
Most dehumidifiers have the option for continuous drainage via gravity. Simply attach the drain hose (may be included with the unit) onto the outlet port and let gravity do the work for you. If the dehumidifier is mounted on a wall, make sure that the hose is positioned downward and that the other end is level with the drain. This prevents water leakage.
Some heavy duty dehumidifiers also come with a built-in condensate pump. This allows for automatic draining farther away or above the unit up to a certain height. This is a useful feature for basements without a floor drain. If you’ve already found a dehumidifier you like but it doesn’t have this functionality, you may also purchase an external condensate pump. They work in the same way and you will have even more options for the distance and height limits.
Desiccant dehumidifiers, on the other hand, do not have drainage functionality since they do not produce any condensate. The collected moisture is transferred to the regeneration air and exhausted outside.
Low Temperature Operation
Even the best dehumidifiers may have some trouble working at low temperatures. If you get extremely cold winters in your location, look for a dehumidifier that can operate efficiently even when temperatures fall to 41°F or below. Commercial dehumidifiers are built to handle tougher conditions than portable home dehumidifiers. They are equipped with advanced defrosting systems to automatically melt away frost buildup and protect the internal components. On the other hand, desiccant units are specially known for their ability to work in temperatures down to -4°F.
A built-in humidistat keeps track of the current humidity in the area. Simply set your target humidity level and the unit will shut off automatically once this is reached, thus reducing your energy consumption. When humidity rises above your setting, the dehumidifier will start operating again. Some wall-mounted dehumidifiers work with a remote humidistat. This can be very convenient and even necessary if your dehumidifier is installed where it’s out of your reach.
Commercial dehumidifiers are mostly built with steel or heavy-duty plastic, instead of the lightweight plastic present in portable units. This makes them more durable and likely to survive in harsh conditions. Metal casing gives them a rugged look that is perfect for a variety of commercial applications. Also take note of the product’s warranty information. A longer warranty period typically means the manufacturer has confidence in the quality and durability of its product.
Uses for a Wall-Mounted Dehumidifier
Wall-mounted dehumidifiers are often used in areas with little space or where having a huge floor space is of high importance. They are useful in a variety of residential and commercial applications.
The typical portable dehumidifier for homes may be small, but it needs at least 6-8 inches of open space on all sides to function properly. Obviously, a wall-mounted dehumidifier will not need that. If you have limited space in your house, a wall-mounted dehumidifier is the solution to high humidity in the living room, basement, laundry room, or an indoor pool.
Due to the costs, however, wall-mounted dehumidifiers are more commonly used for commercial purposes. In general, a dehumidifier helps preserve structures, goods, and equipment. Merchandise of any kind may acquire damages if exposed to heavy amounts of moisture. High humidity may also cause electrical equipment to overheat and malfunction. For small commercial spaces with goods and equipment in storage, a wall-mounted dehumidifier will be useful in controlling humidity.
Indoor facilities where water is always present in huge amounts, such as pools, spas, and greenhouses, require high capacity dehumidifiers to prevent moisture problems. Excess moisture along with other chemicals in the air may become a health hazard if not addressed properly. Since these areas are mostly used for leisure, you want a dehumidifier that’s heavy duty yet pleasing to look at. Even better if it’s completely out of sight.
Food preparation, cooking, and cleaning may cause high moisture levels. Even for a small food production business, there are requirements for temperature and humidity levels during each process. Failure to meet them may affect the shelf life and nutrient content of the food items. Additionally, storage spaces require different conditions for each product.
A lot of commercial dehumidifiers pack high performance in a compact build and you’ll likely find many other uses for them.
Proper Usage, Maintenance, and Storage of Wall-Mounted Dehumidifiers
Wall-mounted dehumidifiers can be installed in many different areas in the house or commercial building. As is the case with other dehumidifiers, they must be operated in an enclosed space so that they can work effectively only in the specified area. The more outside air gets inside, the harder the dehumidifier will have to work and the higher your energy bills.
When using the dehumidifier, always pick just the right setting for your application. Most dehumidifiers feature a humidistat to automatically adjust the room humidity to your set humidity level. The ideal relative humidity for the average person is around 35-55%. Depending on the business you’re running, you may need to operate in a different setting. In any case, only keep your dehumidifier running continuously when it’s absolutely necessary. This way you’re causing less wear and tear on the device, and saving energy at the same time.
Dehumidifiers usually require little to no maintenance, but it causes no harm to take extra care of your appliance. Review the included manual as it contains all the specifications and instructions for installing, using, and maintaining the unit. Warranty information is also included.
Frequent cleaning helps maintain proper functioning and prolong the life of any appliance. A dehumidifier is no different. It extracts moisture as well as dust, mold, and bacteria. These will collect inside the unit and eventually get in the air. To ensure your health and comfort, clean the unit at least every few weeks. You may vacuum the inside to remove any remaining dust and debris. Wash or replace the filter as needed.
Most dehumidifiers work best at room temperature of 65°F, unless it’s specifically designed for colder conditions. If you operate in cool temperatures, condensate may freeze on the condenser coils. Frost buildup can damage the machine completely. Most commercial dehumidifiers have the auto defrost function that shuts off the unit to allow the ice to melt. Even with this feature, you must regularly inspect the coils to prevent any problem. If you really need to operate in cold conditions, get a dehumidifier designed for this purpose. Desiccant models, in particular, can handle temperatures down to sub zero levels.
Dehumidifiers come in different sizes with different features for every need. They effectively remove excess moisture in the air to dry damp stains, prevent wallpaper from flaking, protect electronic equipment, save important documents, and eliminate unwanted smells.
Dehumidifiers can be portable or permanently installed depending on the application. A wall-mounted dehumidifier can save much needed floor space in small rental apartments, multi-family homes, and various commercial spaces like swimming pools, spas, restaurants, and hotels.
It’s important to note that these units are of commercial grade, which means they are much more costly than the standard home dehumidifier. If you want a high capacity appliance that will last long, they are well worth your investment in the long run.