Best Portable Commercial Dehumidifiers

Restoration must be carried out immediately after any water damage emergency in homes or other properties. This can be caused by natural phenomena like flooding and heavy rainfall, or by leaky plumbing, burst pipes, or broken water lines. In any case, stagnant water can be dangerous especially with electrical equipment around. If left for long, it can lead to mold infestation or become a breeding ground for infectious diseases.

Rugged and portable commercial dehumidifiers are specifically built for the task of drying and repairing water damage. They are also commonly used for structural or construction drying and other moisture-prone commercial spaces like indoor pools, spas, and gyms. 

These heavy-duty industrial dehumidifiers are able to work in extreme temperatures and weather conditions to remove moisture from water-damaged properties or large commercial areas and maintain a healthy level of humidity. For quick and efficient solutions, they feature a portable, stackable design and rugged look. 

Note: If portability isn’t a big factor for your application, or if you have an especially large space, you may want to check out our main article here on the overall Best Commercial Dehumidifiers.

To find the best portable commercial dehumidifier for your business, we’ve compared the top brands and models in the market today.

Industrial/Commercial Dehumidifier Comparison

  • Dimensions: 22.8 x 13.7 x 17.3 inches
  • Moisture Removal: AHAM 85 PPDMax 180 PPD
  • Coverage: 2,300 sq. ft.
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  • Dimensions: 17.6 x 12.5 x 21.5 inches
  • Moisture Removal: AHAM 80 PPDMax 134 PPD
  • Coverage: 7,000 sq. ft.
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  • Dimensions: 21.5 x 19.3 x 32 inches
  • Moisture Removal: AHAM 93 PPDMax 190 PPD
  • Coverage: 6,000 sq. ft.
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  • Dimensions: 20 x 19.5 x 32 inches
  • Moisture Removal: AHAM 64 PPDMax 145 PPD
  • Coverage: 12,000 cu. ft.
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  • Dimensions: 20 x 19 x 32 inches
  • Moisture Removal: AHAM 76 PPDMax 125 PPD
  • Coverage: 1,800 sq ft
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  • Dimensions: 20 x 21 x 32.5 inches
  • Moisture Removal: AHAM 130 PPDMax 150 PPD
  • Coverage: 4,000 sq. ft.
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  • Dimensions: 11.81 x 17.72 x 11.81 inches
  • Moisture Removal: AHAM 55 PPDMax 120 PPD
  • Coverage: 1,300 sq. ft.
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Our Top Picks for the Best Portable Dehumidifier

1. Best Commercial Dehumidifier for Water Restoration: AlorAir Storm LGR Extreme

AlorAir Storm LGR Extreme 190PPD Crawl Space Dehumidifier

The AlorAir Storm LGR Extreme Dehumidifier takes the first place in our list. This compact, stackable industrial dehumidifier is designed specifically for water damage restoration. It removes up to 85 pints of water per day under AHAM conditions (80F temperature, 60% relative humidity) and up to 180 pints per day at saturation (90F, 90% RH). With an airflow of 210 CFM, the AlorAir Storm LGR can cover up to 2,300 square feet. With its high efficiency and affordable price, it is a great investment for any business needing a heavy duty commercial dehumidifier.

This unit is built to withstand even the harshest conditions. With epoxy-coated coils and waterproof design, it is perfectly safe to use outdoors and even underwater. Due to its small build, it is also ideal for crawl spaces and basements. Equipped with an auto defrosting system, it prevents frost buildup and stays efficient even in temperatures as low as 33.8°F. It also comes with a built-in pump that can discharge water up to a height of 14.7 feet. 

To avoid internal corrosion and freon leakage, AlorAir has introduced the rare earth alloy tube evaporator. This feature extends the life of the coils by providing protection from corrosion and maintaining the heat transferability. The power cord and condensate hose can be stored on the side of the dehumidifier to help maximize space. You can stack up to three units on a hand truck for easy transport.

The coverage area may be quite small for commercial spaces and a dehumidifier of this capacity. For flood repair and water damage restoration businesses, it is probably best to get a pack of four or eight. Either way, if you’re looking for a portable commercial dehumidifier, this tough and robust AlorAir Storm is definitely one of the best you’ll find.


  • Energy efficient
  • Waterproof, robust build
  • Compact, stackable design
  • Available in packs of 4 or 8


  • Coverage area may be too small
  • A little heavy for its size

2. Best Commercial Dehumidifier for Water Restoration: Dri-Eaz Revolution LGR Compact Dehumidifier

The Dri-Eaz Revolution (formerly Dri-Eaz F413)  is a small and compact commercial dehumidifier that packs just as much power as the larger models. It pumps out a maximum of 17 gallons or 134 pints of moisture per day and 80 pints at AHAM condition. It has an airflow rate of 121 to 180 CFM. It is the perfect example of a small but mighty device. Its impressive coverage area of 7,000 square feet is the largest among our list. Users particularly love that about this model. 

Another great feature you can find in this commercial dehumidifier is the built-in humidistat with real-time inlet and outlet temperature and relative humidity control display. Simply set a target humidity level and leave it to work. The LGR technology ensures quick and efficient moisture removal in a wide range of temperatures and humidity levels. Dri-Eaz Revolution is built for tough environments, specifically in water damage restoration projects, after-flood repairs, and construction sites. It features a rugged rotomolded housing and corrosion-resistant aluminum coils with a one-year warranty on parts and labor and a six-year warranty on internal components.

This lightweight, compact dehumidifier can fit in tight spaces that other commercial models cannot reach like hallways, bathrooms, and crawl spaces. With its recessed feet indents, you can stack up to three units on a hand truck, making it easy and safe to transport. For added convenience, it includes a 40 ft. (12 m) drain hose that can pump water out vertically at least 20 ft. above the unit. It also comes with a 25 ft. (7.6 m) detachable power cord for easy access.

In comparison to the 180-pint AlorAir Storm LGR Extreme, the 134-pint maximum capacity of the Dri-Eaz is definitely that of a small dehumidifier. Also note that it currently sells for almost double the price. Considering its large coverage, it is still one of the best commercial dehumidifiers for its size, just not as powerful as the AlorAir unit when faced with the toughest jobs.


  • Small and compact
  • Large coverage area
  • With built-in humidistat


  • Small maximum capacity to AHAM capacity ratio
  • Pricey for its size

3. Best Commercial Dehumidifier for Large Spaces: Colzer 190 PPD Commercial Dehumidifier

Colzer 190 PPD Commercial Dehumidifier

This Colzer unit is the perfect commercial dehumidifier for a commercial space as large as 6,000 square feet. It can remove a maximum of 190 pints of moisture per day (or 93 PPD at AHAM condition). This is the second highest capacity in our list and most powerful with an airflow rate of 386 CFM.

With this power, it works quickly and efficiently for water damage restoration after a flood or leak, and for drying new building constructions, indoor gardening, greenhouse, pool, or spa.

Just plug it and turn it on. With the built-in humidistat, auto restart, and continuous drainage features, this commercial dehumidifier provides hassle-free use without your constant attention. It allows you to set a target humidity level and a timer from one to 24 hours. The LCD screen displays the inlet and outlet humidity levels and temperatures and tracks job hours. It features an auto HGV defrost that ensures efficient performance in temperatures as low as 33°F.

Built with large semi-pneumatic wheels and a rigid handle, you can easily transport this large dehumidifier from one job site to another. The heavy duty built-in pump connects to a 17-ft long PVC drain hose to drain water up to a 15-ft height. The handle is foldable and the rugged housing stackable to save space for storage and transportation. There is a winder and strap on the back where you can keep the 25-ft long power cord and drain pipe when not in use. The rotomolded housing protects the unit and its internal components from dents, abrasion, and corrosion. 

Being a high-capacity device, the Colzer 190 is heavy at around 97 lbs. One downside we found is its low energy efficiency. If this isn’t a deal breaker for you, it is certainly one of the best dehumidifiers for restorers and large commercial areas that need constant dehumidifying.


  • High maximum capacity
  • Large coverage area up to 6000 square feet
  • Low price for its capacity


  • Not energy efficient

4. Easy-to-Operate Commercial Dehumidifier: Dri-Eaz DrizAir 1200 Commercial Dehumidifier


Another entry from Dri-Eaz is the DrizAir 1200 commercial dehumidifier. It absorbs up to 64 pints of moisture under AHAM condition, and up to 145 pints at saturation. It has an airflow rate of 227 CFM and covers up to 12,000 cubic feet. Equipped with the Hot Gas Bypass system, it works efficiently in temperatures as low as 33°F and as high as 100°F. The touchpad control panel has a single digital display that includes on/off controls, a job hour meter, a reset function, and the purge button. The digital control panel also includes four languages: English, Spanish, German, and French. 

The unit comes with a built-in condensate pump as well as a 40-ft long drain hose that can pump out collected moisture as high as 15 feet above. Whether it’s a damp basement, moldy garage, or a water leakage in the bathroom or kitchen, the DrizAir 1200 is a reliable dehumidifier both for residential and commercial spaces. The drain hose can be wrapped on the back of the unit and the 25-foot long power cord on the top for easy storage.

This rugged industrial dehumidifier is built with rotomolded polyethylene that is highly resistant to damage and designed to be stackable for easy storage. It has semi-pneumatic wheels and a rigid handle for support and ease of movement anywhere you need it. From professional restoration jobs to common moisture issues in the workplace, this unit offers a quick and uncomplicated solution.

Keep in mind that it comes with a heavy, bulky build as a consequence of the rugged design. The absence of a built-in humidistat may also cause inconvenience for some. Additionally, without the auto restart function, the settings will reset to default in case of a power outage. If you can overlook these, then this unit may be one of the best commercial dehumidifiers you’ll find.


  • Highly durable build
  • Easy to use controls


  • Too heavy for its capacity 
  • No humidistat

5. Alternative Option: XPOWER XD-125 Industrial Dehumidifier

The XPOWER XD-125 industrial commercial dehumidifier has a similar capacity and appearance as the DrizAir. It removes 76 pints of moisture under AHAM conditions, and a maximum of 125 pints at saturation. With a hot gas defrosting system and a powerful rotary compressor, the XPOWER operates efficiently in hot and cold conditions down to 33°F with less downtime.

It features an easy-to-use digital control panel where you can set the humidity level from 26% to 90% and purge the collected moisture automatically. It also displays the current humidity level and a record of the working hours. The internal pump enables continuous operation with minimal supervision.

Like most of the units we feature, this industrial dehumidifier is built to withstand the harshest environments with a rugged rotomolded housing. It also comes with heavy duty semi-pneumatic wheels, a 20-ft long drainage hose, and a 25-ft power cord to combat high humidity in any large commercial space or job site.


  • High durability
  • Efficient moisture removal


  • Small capacity compared to other models of the same size

6. Highest Airflow for Portable Commercial Dehumidifiers: BlueDri BD-130P Dehumidifier

The BlueDri BD-130P is similar to the Colzer and DrizAir in terms of build and size. Being the most powerful dehumidifier in this list, it operates with an AHAM capacity of 105 PPD, or 225 PPD at saturation. It performs at a maximum 410 CFM airflow and covers an area of 4,000 square feet. Since higher airflow generally means higher noise levels, expect a loud dehumidifier specifically designed for industrial use. 

This unit comes with a 38 foot drain hose that can pump water up to 5 meters high. The digital control panel also includes a timer to track job hours. Stack up to two units for safe and easy storage and transport. Move wherever you need it using the large built-in wheels and sturdy handle. Built with rotomold technology, you can be sure of its quality and durability against tough handling. It is guaranteed with a one-year warranty and a five-year housing warranty. 

Given its high capacity, it is heavy at 104.4 pounds, which can be hard to drag around tighter spaces. It is ideal for water damage restoration in residential homes, commercial areas, and construction sites. For professional restoration jobs, this unit is also available in packs of four and eight. Among dehumidifiers of this capacity, it is one of the cheaper models you can get without compromising quality. However, when it comes to energy efficiency, BlueDri may not be the best out there.


  • Highest airflow at 410 CFM
  • Highly durable build
  • Low price for its capacity
  • Available in packs of 4 or 8


  • High noise levels 
  • Not energy efficient

7. Commercial Grade Dehumidifier for Crawl Space: AlorAir Sentinel HD55 Crawl Space Dehumidifier

AlorAir Sentinel HD55 Dehumidifier

Another brand you can rely on for high performance dehumidification is AlorAir. They have a line of crawl space dehumidifiers for every size of home. The Sentinel HD55 is probably the best commercial grade dehumidifier with its size and capacity. As the model name suggests, it extracts up to 55 pints of moisture per day at AHAM condition, and a maximum of 120 pints of moisture at saturation, the smallest in our list. It covers up to 1300 square feet and moves the surrounding air at a rate of 130 CFM. 

This crawl space dehumidifier is Energy Star certified, ensuring you of high efficiency at a low price. Equipped with the HGV defrosting system, it works efficiently in temperatures as low as 36F. The coils are epoxy-coated to protect against corrosion and freon leakage. This advanced technology ensures the durability and safety of the device. 

There is also an option to use a remote control with this unit, making it the perfect dehumidifier for crawl spaces and other tight spaces. Being of smaller size and capacity than most commercial dehumidifiers, the Sentinel HD55 is also ideal for residential use. Operating at a maximum of 52 decibels, you may use it in the basement, garage or even the living room.

One downside is it doesn’t come with a built-in pump, which means the unit must be placed higher than the drain. If you need a heavy duty dehumidifier that can handle tough conditions, then you might be better off with a bigger, high-capacity commercial unit. But if you need a reliable dehumidifier for everyday use in commercial spaces such as offices, shops, restaurants, small warehouses and storage rooms, then this is your best option.


  • Most affordable commercial dehumidifier of its quality
  • Energy Star certified
  • Small and compact


  • Small coverage area
  • No built-in pump

8. Commercial Dehumidifier for Low Temperatures: Dri-Eaz DriTec 4000i Desiccant Dehumidifier

Dri-Eaz DriTec 4000i Desiccant Dehumidifier

Dri-Eaz also offers a desiccant commercial unit for efficient operation in a wider temperature and humidity range. Unlike the larger refrigerant units, the DriTec 4000i operates down to 0°F and 0% relative humidity. It is ideal for drying hardwood floors, plaster, bricks, concrete, and other difficult to dry materials in job sites or new constructions. 

This versatile, portable dehumidifier removes up to 118 pints of water per day in AHAM conditions. It moves the process air at 395 CFM and the reactivation air at 65 CFM. The digital control panel shows real-time temperature and humidity readings for the inlet and outlet ducts. You can reset the job hours and program the humidity level from 5% to 60% RH with the onboard humidistat.

Similar to other commercial units from Dri-Eaz, the DriTec features large semi-pneumatic wheels and a foldable handle for easy storage and transport. It operates vertically or horizontally for flexible setup in low-clearance areas like crawl spaces.


  • Operates in low temperatures and humidity levels
  • Flexible installation


  • Heavy for its size

How to Find the Best Commercial Dehumidifier

Buying a commercial dehumidifier is no easy task. You must consider your needs, your budget, and the specifications of each unit to find what matches you best.

Moisture Extraction Rate

The amount of water the dehumidifier is able to pull from its environment is the first thing you need to consider. This is measured in pints per day or PPD. The maximum capacity is the largest amount that it can extract per day at the ideal condition of 90°F and 90% RH. 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. We included both the maximum and AHAM capacities of each model to show you their full capabilities. 

Industrial dehumidifiers built for water damage restoration typically come with at least a 50 PPD AHAM capacity, depending on its size and build. For heavy tasks, you may opt for a capacity as high as you need. The largest unit among our picks can take a maximum of 225 pints in 24 hours.

Coverage Area

You want a dehumidifier that can cover as much space as you need. This is important because the wattage you need in order to run your dehumidifier depends on the product’s energy efficiency and the amount of space that it has to cover. The airflow, measured in cubic feet per minute (CFM), is the volume of air it can process per unit of time. A higher airflow rate typically means a larger coverage area, but this isn’t always the case. It can vary greatly between different brands and even different models within that brand. For reference, a standard commercial dehumidifier can cover anywhere from 2,000 to 8,000 square feet. Some can go up to 10,000 square feet.


Commercial dehumidifiers are unsurprisingly big, heavy devices. Portability is just an added bonus. If you’re in the water damage restoration business or working in construction sites, you want a portable dehumidifier you can easily stack, store, and transport from one location to another. Higher capacity generally means a heavier device, but you must have already expected that going into this business. For easy movement within the four corners of a large commercial space, there are models designed with large wheels and handles.

Built-in Condensate Pump

Anyone would prefer a hassle-free dehumidifier. Most heavy duty dehumidifiers come with a built-in automatic water pump. This means you can operate them anywhere you need as long as the drain hose can reach the sink, drain, or window where you want to release the water up to a certain height depending on the unit. 

Low Temperature Operation

Basements and large, empty spaces like warehouses or storage areas can get extremely cold in the winter. Compressors often have trouble working in low temperatures. However, commercial dehumidifiers employ a hot gas defrosting system that is absent in standard home dehumidifiers. Make sure you look for models that can handle temperatures that fall to 36°F or lower.

Auto Humidistat

For storage facilities, museums, or laboratories that contain delicate substances, the temperature and humidity level must be kept at a specified range at all times. A built-in humidistat keeps track of the relative humidity in the area, so that the target level is always maintained even without supervision. 

Build Quality

Commercial dehumidifiers are mostly built with a metal casing or heavy-duty rotomolding, as opposed to the lightweight plastic found in residential dehumidifiers. This makes them more durable and more likely to survive tough conditions. Choose a model which offers reliable warranty and service should the need for repairs or other issues arise. A longer warranty period means the manufacturer is confident in the quality and durability of their product.

Extra Features 

The best commercial dehumidifiers have some extra features like the auto restart and shut-off can be really convenient. In the event of a power outage, the dehumidifier automatically returns to operation with previously programmed settings once power is restored. Some units like the AlorAir commercial grade dehumidifiers also have an optional remote control and monitoring if you purchase the separate remote.

Who are Commercial Dehumidifiers for?

Commercial dehumidifiers are commonly used for restoration and drying applications in after-flood repairs, building maintenance, and new constructions. They preserve structures, goods, and equipment. They vary greatly in terms of size and coverage. Just like any high-capacity device, they can take up a lot of space both for storage and operation. For restoration companies and other businesses prone to moisture related issues, investing in a good commercial dehumidifier can really save a lot of time, money, and effort.

Unforeseen incidents like heavy rainfall and floods may cause destruction to structures. After experiencing water damage, it is important to dry out the area affected within 48 hours. For severe water damage, restoration companies use heavy duty dehumidifiers that can be easily stacked and loaded up into a vehicle for transport. 

Commercial dehumidifiers are also useful in areas where moisture collects like damp basements, garages, and storage spaces. Moisture prone commercial spaces like indoor pools, spas, or gyms also need a high capacity dehumidifier to remove excess moisture and keep the humidity at healthy levels. Excess humidity can lead to mold growth and poor air quality.

It is absolutely essential to maintain optimum humidity levels within controlled environments in various industrial facilities such as factories, warehouses, laboratories, museums, and archives. Merchandise of any kind may suffer damages if exposed to heavy amounts of moisture. High humidity may also cause electrical equipment to overheat and malfunction.

For large houses that suffer in high humidity levels throughout the year, commercial grade dehumidifiers are the best solution. They have a high moisture extraction rate and are much more durable and resistant to extreme weather conditions than the typical house dehumidifier. They are often installed in crawl spaces or connected to the heating, ventilating, and air conditioning (HVAC) for automatic humidity control and better indoor air quality.

How Does a Commercial/Industrial Dehumidifier Work?

The two main types of dehumidifiers are classified by the dehumidification process they use.

Refrigerant Dehumidifier

Most commercial dehumidifiers work in a similar process as standard compressor type dehumidifiers commonly found in residential properties. In lower temperatures where the performance of household dehumidifiers declines dramatically, a commercial dehumidifier will keep working with the same efficiency.

It pulls the moist air in through a fan and passes it through a cold evaporator core. As the temperature decreases, the air loses its ability to hold water vapor. The excess moisture is then condensed into water, which flows out through the continuous drainage system in use. The now dry air is reheated and exhausted to the room to collect more moisture.

Commercial grade refrigerant dehumidifiers, like most of the units we featured above, use advanced technologies (like the hot gas bypass system) to allow operation in lower temperatures with less downtime. This saves energy and ensures that the unit is working as desired.

Desiccant Dehumidifier

The second type of dehumidifier is called a desiccant. Full-size desiccant dehumidifiers are about the same in appearance as refrigerant models but with lower noise level since the desiccants do not use compressors. Instead they feature a rotating wheel that is filled with a hygroscopic chemical such as silica gel. They operate in much lower temperatures and in a wider humidity range.

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, effectively removing excess moisture from the air. 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.

Proper Usage, Maintenance and Storage for the Best Commercial Dehumidifiers

When using the dehumidifier, place it in a region with enough air circulation. It must be kept a few inches away from the wall or any blockage. Most of these machines work best at room temperature of 65°F but remain efficient at as low as 33°F or as high as 100°F. At freezing or nearly freezing temperatures, always check the coils for frost, even with a dehumidifier that defrosts automatically. Operating your dehumidifier in cool conditions can cause frost buildup, which compromises the unit’s performance.

Before cleaning, make sure to turn off and unplug the unit first. You may use a vacuum to clean the insides to ensure that dust or debris don’t accumulate. Consult your manual for more specific guidelines and instructions. Dehumidifiers usually come with a filter to protect the machine and its components from dust, bacteria, and other allergens present in the air. You must clean this as well or change it according to the recommended period indicated in the manual.

Just like your air conditioner, never turn on the machine instantly after turning it off. Wait for at least ten minutes to turn it on again. This time gap allows some time to even out the pressure that was manufactured when the machine was operating. Apart from allowing the appliance less time to eliminate humidity effectively, turning the unit on instantly after turning it off can also cause damage to its compressor.

When your dehumidifier is not in use, place it in storage until it is needed. First, turn it off and allow it to dry completely. Ensure that the power cord and drain hose are wrapped neatly in their proper place. Some units have a designated area for them. Once cleaned and dried, store the unit in a clean dry space. When transporting from one location to another, make sure each unit is stacked properly.


Do I need a commercial dehumidifier?

It depends on the level of humidity and the size of the area. A commercial dehumidifier can tackle tough tasks and handle extreme conditions that the standard humidifier cannot survive. For drying and restoring water-damaged sites, a commercial dehumidifier is what you need.

How do commercial dehumidifiers work?

They extract moisture from the air by passing it over cool metal plates until the water condenses and drips into the drain.

How long do commercial dehumidifiers last?

It depends on the brand and model, but a good commercial dehumidifier can last three to five years with proper use, care, and maintenance.

How much do commercial dehumidifiers cost?

As of writing, a single commercial dehumidifier typically costs anywhere from just under $900 to $2500. All the models we featured are within the range of $800 to $1800 at the time of our last update.

Where is the best place to put a commercial dehumidifier?

Ideally, it must be at the center of the room to ensure maximum coverage. If you need to install several dehumidifiers, spread them evenly across the area. 


Whether caused by an unexpected incident like burst pipes and broken water lines, or an act of nature such as heavy rainfall and flooding, water damage must be addressed as soon as possible. Professional restorers use commercial dehumidifiers that come in portable, stackable design for easy storage and transportation. Depending on the degree of damage, you need a dehumidifier with enough capacity and coverage area for a quick and efficient solution.

Excess moisture can also be a threat to any commercial area, especially water-based businesses and large storage spaces. For industry-specific dehumidification needs, you need a commercial dehumidifier to tackle your humidity issues before they escalate. When purchasing a dehumidifier, make sure to consider every feature you need to get the most out of your investment.

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