How does a commercial dehumidifier work?

3 Key Takeaways:

🚀 Commercial dehumidifiers come in large pint sizes, with their pint size being sufficient to remove moisture at the rate of 150 to 250 pints per day.

🚀 The moist air passes over the cold coils within the unit, and a fan ensures the air passes the cooling coils that help in carrying out condensation.

🚀 A commercial dehumidifier is the ideal choice to exert humidity control for a large space, such as a large basement, construction areas, gymnasiums, and pools.

Maintaining the ideal relative humidity level in a home or any space is a challenge. Luckily, nowadays to extract moisture we have dehumidifiers. Dehumidifiers work in a specific manner to extract moisture from the environment and send back dry air into the area. More moisture in the air comes with several disadvantages. Humidity control for a large basement or commercial spaces is taken care of with commercial dehumidifiers.

Commercial dehumidifiers or industrial dehumidifiers are excellent inventions that keep large indoor spaces free from excess humidity and excess moisture. The moisture in the air is absorbed effectively by the unit to give a space that is dry and has the perfect relative humidity level.

What is a Commercial Dehumidifier?


A commercial or industrial dehumidifier is the ideal choice to exert humidity control for a large space. Large basement, construction areas, gymnasiums, pools, etc., will benefit from commercial dehumidifiers. They are designed to tackle excess moisture in the air and maintain the relative humidity levels in a large space. They remove moisture from the moist air in the environment and help with the humidity control process effortlessly.

Commercial dehumidifiers come in large pint sizes. Their pint size is sufficient to remove moisture at the rate of 150 to 250 pints per day. To get improved air quality, comfortable temperature and deep drying of furniture, walls, sensitive materials, to prevent condensation and keep mold and other allergenic organisms away from the air of a large space, commercial dehumidifiers are the best choices.

How Does A Commercial Dehumidifier Work?

The basic principle of how does a commercial dehumidifier work to keep the humidity and temperature of space under check and how much water a commercial dehumidifier can remove from the air is very similar to other residential dehumidifiers.

Following the basic principle of condensation, the commercial dehumidifiers remove excess moisture from the room. The moist air passes over the cold coils within the unit. Like air conditioners and other purifiers, a fan ensures the air passes the cooling coils that help in carrying out condensation.

The air cools and is made moisture-free, after which the heat recovery system of the dehumidifier will warm the air again before it sends it out into the room. The advantage of the process and using commercial dehumidifiers to handle relative humidity and bring about humidity control across any large space or room can be seen with how successfully a commercial dehumidifier works.

Commercial dehumidifiers are made with high heavy-duty plastic and every essential part of how commercial dehumidifiers work ensures the air quality is enhanced, air cooling takes place and the excess humidity of the space is improved and the temperature cooling can be experienced. A commercial dehumidifier is designed to withstand rough temperature environments and carry out deep drying of any large space like a large basement, construction sites, sensitive material around the home, etc. Similar to residential dehumidifiers, a commercial dehumidifier also helps to keep mold and other allergenic organisms away, along with excess humidity. Any space with more water and moist air ruining the air quality can be handled effectively with a commercial dehumidifier.

How do you use a commercial dehumidifier?

Apart from learning how does a commercial dehumidifier work, it is also important to understand how to put a commercial dehumidifier to efficient use.


The area that the dehumidifier is expected to carry out humidity control is important to estimate the size of the dehumidifier to be purchased. Be it a commercial dehumidifier or a residential dehumidifier, the rule is the same. How large the area is and where there is more water content to be removed will determine where to place the dehumidifier.

Humidity Levels

For a residential dehumidifier or a commercial dehumidifier to maintain the ideal relative humidity level in any room, it is first required to study the existing humidity conditions of the room. High humidity environments, like an area exposed to water damage, will have more liquid water content. How much water is required to be removed from the area (whether due to water damage or humid temperature conditions and or from overheating), will determine the unit size. Using the right size unit will ensure the humidity level of the area is maintained with ease.

Some dehumidifier models are not equipped to work in low temperatures. Although commercial dehumidifiers come made in heavy-duty plastic and can handle the heat and high humid climates, not all models can handle extremes of temperature. The fan, compressor, and other internal parts of the commercial dehumidifier might get damaged when not used in the right temperature environments.

How Does a Desiccant Commercial Dehumidifier Work?

Ecor Pro Dehumidifier

Did you know that Desiccant commercial dehumidifiers are also known as Chemical Absorbent Dehumidifiers? These kinds of desiccant dehumidifiers are a popular choice to maintain high humidity levels in areas with cold climates. It has been noticed that these desiccant dehumidifiers work better in places with low humidity levels and can use dry air.

A desiccant dehumidifier works using hydrophilic materials, like the Silica gel wheel. They do not have condensers or a cold coil where the moist air passes over to remove the excess moisture from the air. Rather than a condenser or cold coil which carries out condensation to remove moisture from the air, these desiccant commercial or industrial dehumidifier has the silica gel wheel or rotating wheel.

This is going to help in removing water damage from construction sites or excess moisture from the air, excess humidity levels in pool areas, etc. Let’s take a look at how this dehumidifier works to remove moisture.

Inside the desiccant commercial or industrial dehumidifier, the moist air passes over the rotating wheel or silica gel wheel, a very essential part to carry out the process. This silica gel is going to absorb moisture from the air that has been drawn into the unit with the help of the fan within. The unit will have a heat recovery system that is responsible to heat the air coming out of the wheel (known as reactivation air). This heating continues, by the reactivation air going back to the wheel which removes moisture from it completely. This dry air is now sent out into the space, which is free from moisture and allergenic organisms like mold and mold spores, bacteria, mildew, dust mites, etc.

An added advantage of a desiccant commercial or industrial dehumidifier is the manner in which this commercial dehumidifier works. Since these commercial dehumidifiers do not have a compressor in them they are ultra-quiet. The lack of compressor low noise levels, like air conditioners, makes this type of commercial dehumidifier an ideal choice for offices. You can also find desiccant commercial dehumidifiers work in construction sites, pool areas, and even some homes to remove water damage.

How do you drain an industrial dehumidifier?

Draining water from an industrial dehumidifier or commercial dehumidifier is simple. If the commercial dehumidifier has a pump present along with the unit, the moist air that has been converted to dry air will get back into the room and the water extracted from the moist air will drain down through the hose that is connected to the hose or sink or any outlet. Moisture removed from the air is sent out the unit by continuous drain method or manual drainage.

If the commercial dehumidifiers do not have a gravity drain pump system, they will have a water bucket or reservoir to collect the water from condensation. The collection tank will have an indicator in most industrial dehumidifiers to notify that it is full. The tank can then be emptied out to drain the water.

FAQ Section

1. Are commercial dehumidifiers safe?

Yes. Commercial dehumidifiers or industrial dehumidifiers, and even residential dehumidifiers and desiccant dehumidifiers are safe to use. They have been found highly efficient in humidity management. The way in which a residential dehumidifier or commercial dehumidifier works can guarantee that your home stays safe from mold and other allergens.

2. How long does it take for an industrial dehumidifier to work?

Based on the amount of moisture to be removed from the area, a commercial dehumidifier might take anywhere from 24 hours to 4 days to give a thorough drying process and moisture removal.

3. How do you set up a commercial dehumidifier?

Setting up a commercial dehumidifier or residential dehumidifier is simple. The manual will contain all the instructions on setting up the dehumidifier and tuning it on. The control panel in the dehumidifier can be used to turn On the device and set the ideal humidity and moisture removal required.

4. How do you purge a dehumidifier?

Pressing the ‘Purge’ key on the dehumidifier before moving the dehumidifier will purge the pump completely. Although the pump will close automatically 40 seconds after the continuous operation and the pump purges when the reservoir is full, the Purge key is present to guarantee complete emptying of the dehumidifier.

5. How do you clean a commercial dehumidifier?

Cleaning a commercial dehumidifier is quite similar to cleaning a residential dehumidifier. Using soapy water to clean the filter, tank, and outer body of the dehumidifier can be done. You can use a vacuum cleaner to dry the dehumidifier thoroughly.

Wrapping Up

With this, we have reached the end of the article. We trust you have a clear understanding of how does a commercial dehumidifier work and its uses. Share with us your experiences of using a commercial dehumidifier and which commercial dehumidifiers were most effective.


About The Author

Olivia — a self-confessed air quality addict — is a home climate enthusiast, fresh air advocate, and someone with deep personal experience and knowledge about mold extermination. Her work was mentioned in countless notable humidity publications. Previously she was an editor at Mold Remediation.