Struggling with managing humidity levels effectively in large spaces or commercial settings?

In this blog, we introduce the best commercial dehumidifiers, essential for businesses, warehouses, and large indoor areas that require efficient moisture control. We cover a range of dehumidifiers that cater to different commercial needs, from models with high moisture removal capacity for industrial applications to those designed for quieter operation in customer-facing environments. This includes options that are energy-efficient, durable, and offer features like automatic humidity control and continuous drainage.

With over 20 years of experience in indoor air quality solutions and environmental control systems, we’ve assisted numerous clients, from small business owners to facility managers, in selecting the right dehumidifier for their specific commercial requirements. Our selection of the best commercial dehumidifiers is grounded in comprehensive testing and real-world application, ensuring our recommendations are effective, reliable, and suitable for a wide range of commercial uses. These dehumidifiers aren’t just about reducing moisture; they excel at improving air quality, preventing mold and mildew growth, and maintaining a comfortable environment.

We’ve evaluated them for their performance in various commercial settings, energy efficiency, and ease of use, finding them ideal for anyone seeking a robust solution to manage humidity in larger spaces efficiently.

Highest Quality Commercial Dehumidifier

ALORAIR Basement/Crawl Space Dehumidifiers Removal 120 PPD

Small and compact, the AlorAir HD55 provides excellent dehumidification. There is no other dehumidifier on this list that has a smaller capacity than this 55-pint AHAM variant. No matter how big the conditioner is, the water it extracts from the air can amount to 15 gallons.

Small commercial applications might be best served with the 55-pint AHAM AlorAir HD55 dehumidifier. The 59-pound weight also makes transporting it easy. The 410 W it draws negates the need for an additional generator.

AlorAir HD55 is actually one of the quietest commercial dehumidifiers on the market thanks to its 45 dB maximum noise levels. Because of the 130 CFM airflow, obviously, that’s a result.

Even a compact device like this is quite energy-efficient. The indoor air can be dried with 1 kWh of electricity, with an average moisture content of 2.4 liters. Compared to commercial dehumidifiers, it’s much more efficient than 1.7 liters of water per kWh.

The AlorAir HD55’s best feature is its price. A dehumidifier under $900 is one of the few available on the market.

What We Like

  • Currently, it is the cheapest dehumidifier available on the market, at below $900.
  • Approximately 1,300 sq ft at 55 AHAM capacity.
  • (2.4 L/kWh) Superb energy efficiency.
  • Commercial dehumidifiers with maximum noise levels less than 45 dB.

What We Don’t Like

  • Spaces larger than 1,300 square feet should not be used.
  • The airflow is low at 130 CFM.
  • There is a very low price for the unit, but that’s typical for a smaller unit.

COLZER 190 PPD Commercial Dehumidifier

It is appropriate to use the word commercial to refer to the Colzer 190 PPD commercial dehumidifier since it is large, heavy, and powerful. An industrial-sized unit such as this one can reduce the humidity from 60% to 50% in 24 hours in a warehouse or shop.

We conducted a test procedure to find out whether there was moisture in the basement after establishing that there was none. With the Colzer 190 PPD, the hygrometer read 48 percent within a single night.

This dehumidifier has been thoughtfully built. Water does not spill when disconnected from the outlet hose, and the weight distribution makes it easy to carry.

According to reports, one user, who owns a 15,000-square-foot home, uses two of these units. This Colzer model maintains a 55% humidity level in an area of 120 square feet with its high efficiency. ft. of space when the outside level is 90%. We recommend it for buyers with humid conditions since it comes pre-assembled (minus the 17″ outlet hose).

Additionally, the air outlet serves as an effective dehumidifier, which can be used for the whole house.

What We Like

  • A machine like this can extract 29 gallons of water per day if the humidity is at 90%
  • The coverage area can reach up to 8000 sq. ft.
  • Our tests have shown that the unique system can dry the basement completely in a few hours, even if it is wet (>70% humidity).
  • It’s so convenient to move the 106lb-machine on wheels with its weight distributed evenly.
  • Priced at slightly more than $1,000, this industrial dehumidifier offers basic features at a decent price.
  • Dehumidifiers made by Colzer are of extremely high quality due to their heavy-duty construction.

What We Don’t Like

  • This Colzer 190 PPD dehumidifier is still inefficient, even for an industrial dehumidifier. Using ordinary testing conditions, it gets 110 pints of water, which is extremely good given its 1400W power rating.
  • A humidity sensor would be very useful in preventing temperatures from aging too quickly.

AlorAir Storm EGR Extreme 190 PPD (Robust Commercial Dehumidifier)

Among the toughest dehumidifiers you can buy are AlorAir’s Storm EGR Extreme models. By securing the board with a rubber band, you can achieve waterproofing. An HGV defrosting system can function at extreme temperatures as low as 33°F (and its minimum temperature requirements are only 32°F).

There is an industrial feel to this unit. You will be able to move 78 lbs by yourself since it is not that heavy. The specifications are as follows:

There is 190 PPD capacity and 85 pint capacity on AHAM. A high humidity level (up to 100%) can further increase the efficiency of this device.

The device achieved an energy factor of 2.88 L/kWh, which is quite surprising (for a device of this type). Designed to solve all your humidity problems, the Storm EGR Extreme dehumidifier is energy-efficient.

The 55 dB noise level of this unit makes it one of the loudest on the market. With a capacity of 85 pints, dehumidifiers provide airflow of at least 210 CFM.

It is difficult to beat a dehumidifier of this quality. It can be operated in the most extreme settings, including underwater, and it is extremely affordable.

What We Like

  • Designed for extreme conditions, this dehumidifier is robust and reliable.
  • The rubber band even protects the circuit board from dampness, so it is 100% waterproof.
  • Having a defrosting system for HGVs, it can operate at extremely cold temperatures of 33°F.
  • Energy efficiency is very high (2.88 L/kWh).
  • This product is very effective when the relative humidity is over 90%.
  • It is one of the more affordable options, at under $1,000.

What We Don’t Like

  • Quite loud (55 dB noise level).
  • 210 CFM is the maximum airflow.
  • One person who is able to lift 78 pounds can carry it.

Types of Commercial Dehumidifiers

By removing excess moisture from the air, dehumidifiers provide an effective way to control humidity levels in a room. You may not be aware, however, that their methods for achieving this may vary. You can categorize commercial dehumidifiers into two main categories based on the technology they use: desiccant or refrigerator coil.

Dehumidifier with desiccant

By moving air through a rotor containing a desiccant, dehumidifiers reduce moisture in the air.

  • In dehumidifiers, silica gel is commonly used as the desiccant material, which is technically not a gel, but a porous and granular form of silicon oxide.
  • Silica gel is able to absorb moisture due to its unique structure.
  • A desiccant absorbs water from the air, and then the dried air is blown out of the rotor.
  • A dehumidifier collects moisture in its desiccant wheel, which is then vaporized and moved through ducts and out of the building.

Dehumidifiers that use refrigerants

The most common type of dehumidifier is an air condenser that pulls moisture from the air using refrigerants.

  • Upon condensation, the evaporator coils pull moisture from the surrounding air and move it to the dehumidifier’s coils.
  • This causes the air to cool, which causes water vapor to condense.
  • Dehumidifiers discharge their liquids automatically by dripping condensation into a collection basin or a drainage hose.
  • The condenser coils in dehumidifiers are heated, which removes humidity from the atmosphere. The air is then heated before leaving the machine.
  • The air is removed by dehumidifiers at high pressure, which forces the air to concentrate on specific areas.

Commercial Dehumidifier: Buying Guide

It may not be the best choice to buy the first dehumidifier you see on the market. The homework you are supposed to do should be completed. Choosing the right dehumidifier may not be easy. Consider the dehumidifier’s features before purchasing it.

Coverage Area

Dehumidifiers need to be sized according to the space they must occupy. That is why it is so important that you find out how big the coverage area is before you purchase a dehumidifier. Up to 10,000 cubic feet can be covered by some models. Some people can go higher than that. If your commercial space is too small for the unit you buy, no one is going to benefit. To determine what a dehumidifier can do for your space, measure the area you have.

The Pump Is Built-In

A built-in pump is what we recommend you choose. The overall convenience of such a model will be increased. Water collected (via a hose) can be expelled automatically by the built-in pump. Water is automatically drained from the container when it is full.

Noise Level

It’s easy to become annoyed with a noisy machine. What business meeting would you want to have a noisy dehumidifier interrupt? A unit’s noise level should always be checked before purchase. To minimize noise, select a model that emits no more than 50 decibels.


Portable dehumidifiers are great for keeping your house dry. They can be placed anywhere you desire with ease because they have handles and wheels.

Term of Warranty

Look for a warranty that you can trust. Whenever an issue with the dehumidifier arises, you can rely on the warranty.

Restart Automatically

Dehumidifiers with auto-restart capabilities can be beneficial for businesses in areas that frequently experience power outages. As soon as the device is restarted, the power is restored automatically.

Integral Humidity Control

Built-in humidistats ensure you get temperature and humidity measurements in real-time.

Operating at Low Temperature

During the winter months, warehouses are generally cool. Therefore, if you work in a low-temperature environment, you should use a dehumidifier that is effective at low temperatures.

FAQs: Commercial Dehumidifier

Do commercial dehumidifiers offer “install-and-forget” functionality?

The fact is that commercial dehumidifiers cannot be installed and forgotten because they need to be maintained. Most likely, you own devices that use batteries for power or operation. This means you must constantly replace their batteries or connect them to a power source. Furthermore, you should maintain their filters by cleaning and replacing them regularly.

When it comes to maintaining the right humidity level in a hotel, supermarket, or nightclub, how much moisture is ideal?

The optimal humidity level in hotels, grocery stores, and nightclubs should be between 40 and 45 percent since the focus is mainly on dehumidification and not only temperature control.

The dehumidifier needs to be defrosted for what reason?

Some humidity and temperature conditions can lead to ice building upon a refrigeration dehumidifier’s evaporator coils. If ice accumulates on coils, it can obstruct air circulation, resulting in a blockage. It can even lead to damage to the machine if the accumulation prevents it from running as it should. When accumulated ice becomes severe enough, it can permanently damage the machine by distorting the mechanical parts.

A defrosting system is usually included with high-quality dehumidifiers. This system will assist in defrosting the evaporator coils. The unit will automatically restart after the coils are defrosted.

Our Verdict

Dri-Eaz’s F413 Revolution Dehumidifier clinched our unanimous selection of the best in this round due to its large coverage area and variety of advanced features incorporated into it. Due to its adaptability, people with large homes can use this powerful machine in addition to commercial settings.

In contrast, our second recommendation is the AlorAir Commercial Water Damage Restoration Dehumidifier, a product that is virtually faultless. In combination with its relatively large area and reasonably low price, and the fact that it is also equipped with a gas-powered defrosting system, this machine is pretty hard to fault.

COLZER’s 190 PPD Commercial Dehumidifier is our third choice and our most affordable pick. There are two types of dehumidifiers: compact and powerful, each able to cover 801 square feet.