By Grainger Editorial Staff 9/12/23
In large spaces like warehouses, greenhouses, gyms, schools, hospitals and manufacturing facilities, excess humidity isn’t just uncomfortable – if left uncontrolled, it can destroy a structure with mold, mildew and corrosion. Dehumidifiers are designed to remove moisture and improve air quality by preventing odors, mold and mildew. Commercial dehumidifiers can also help protect equipment from corrosion and damage. Explore the different types of industrial dehumidifiers and the important considerations to help you choose the right size for your facility needs.
Relative humidity (RH) is the amount of water vapor in the air compared to the total amount the air can hold at that temperature. According to the Environmental Protection Agency, the moisture level in a space should be kept below 60% RH, ideally between 30% and 50%. During the heating season in colder climates, Energy Star notes the RH levels in a building should be between 30% to 40% to help prevent window condensation. If the moisture level is too low, it can cause dry skin and respiratory problems. The dehumidifier that you choose should be able to remove enough moisture from the air to keep the moisture level in the desired range.
Dehumidifiers remove moisture from the air by using a refrigeration or absorption process:
Condensate dehumidifiers use refrigerant to remove moisture from the air in two ways:
Depending on the type of dehumidifier, the collected water can be drained in several ways, including:
There is no one-size-fits-all when it comes to selecting an industrial dehumidifier. Every space has unique requirements and challenges; therefore, choosing a system requires careful consideration of several factors, including the facility size, location and climate.
Dehumidifiers are available in many different styles to meet specific needs, including:
Variables associated with selecting the right dehumidifier size include room size, the building environment, function and much more. Here are some factors to keep in mind to help you find the right dehumidifier for your facility's needs:
Dehumidifiers require regular maintenance and cleaning to run properly and help prevent mildew growth. Some key steps include:
By choosing the right type and size of a dehumidifier, you can help to prevent mold and mildew growth, improve air quality and extend the life of your equipment.
Q: What’s the difference between office and industrial dehumidifiers?
A: Industrial dehumidifiers are more durable and provide higher water-removal capacity than office dehumidifiers. Industrial dehumidifiers are also specifically designed to manage the humidity levels in a large commercial space and help support construction work or water damage restoration.
Q: How long does it take a dehumidifier to work?
A: Depending on the size of the area, a dehumidifier can take anywhere from a few hours for smaller and medium single rooms to up to 10-12 hours for larger spaces. Most units have a built-in humidistat that can be set to maintain a specific humidity level.
Q: Where is the best place to put a dehumidifier?
A: The best location for your dehumidifier depends on where the excess humidity exists, whether it’s in a living area, basement or crawl space. Use a humidistat or hygrometer to assess the humidity level in the space and find the best location. Many dehumidifiers can safely be placed against walls. However, if you do not have top-mounted discharge, place the dehumidifier away from walls and furniture, so air can freely circulate around the unit. Make sure to keep any drain hoses away from electrical cords or connections.
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The information contained in this article is intended for general information purposes only and is based on information available as of the initial date of publication. No representation is made that the information or references are complete or remain current. This article is not a substitute for review of current applicable government regulations, industry standards, or other standards specific to your business and/or activities and should not be construed as legal advice or opinion. Readers with specific questions should refer to the applicable standards or consult with an attorney.