Commercial LGR Dehumidifier for Water Damage Restoration
Industrial Dehumidifier for Large Grow Room
Whole House Dehumidifier for Crawl Space Attic
Preair Company Responsibility of Environmental Protection Low Carbon

welcome to preair

Preair specializes in the development and production of commercial and industrial dehumidifiers, delivering dependable humidity control solutions.

Preair has been committed to developing indoor air quality (IAQ) solutions for over 20 years. Through the dedicated efforts of our team, we’ve introduced a full line of dehumidifiers—including the LGR, ZETA, PRO, HT, CFZ, and Whole House series—to meet a wide range of needs.
Our dehumidifiers are trusted for water damage restoration, crawl space, basement, and greenhouse humidity control, mold prevention, etc. They’re also essential in critical environments like archives, power distribution rooms, sports venues, factories, hospitals, and other healthcare facilities. As a professional manufacturer, Preair is focused on delivering reliable, efficient dehumidification solutions for homes, commercial spaces, and industrial applications.

about preair

Professional dehumidifier manufacturer

Zhejiang Preair Electrical Appliance Industry Co., Ltd. is one of the best dehumidifier manufacturers that provides customized and finished dehumidification equipment. The main factory of Preair locates in Hangzhou and covers an area of 53,000 square meters. The factory has several production workshops (sheet metal, spray-coating, roto molding, etc.), office buildings, a CNAS Lab testing facility, environmental protection facilities, staff dormitories, and canteens. Preair production workshops include three fully automatic production lines, a semi-automatic production line, laser numerical control sheet metal production equipment, rotational molding production equipment, etc.

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About Preair Dehumidifier Company
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  • 20+
    Industry Experience
  • 53000+
    Factory Area
  • 1.2million
    Annual Production Capacity
  • 2000+
    Cooperating Suppliers

new arrivals

Well-designed dehumidification equipment sold by Preair. Pick the best smart dehumidifier for your purpose.

products
HT 1501 Commercial Powerful Dehumidifier Self Draining

HT 1501 Commercial Powerful Dehumidifier Self Draining

Preair commercial dehumidifiers are well-designed and have a wide application. With a sheet metal housing, LED panel, cart shape, and drain hose, the HT series dehumidifiers are popular among young white-collar workers, administrative leaders, professionals in restoration companies, senior home service technicians, and individual business owners. The large dehumidification capacity and reasonable price of the HT 1501 dehumidifier are alluring to every customer.

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VT70E Energy Efficient Dehumidifier for Crawl Space

VT70E Energy Efficient Dehumidifier for Crawl Space

Preair has newly launched the efficient model, the VT70E dehumidifier. It specializes in controlling humidity in narrow spaces. In crawl spaces, basements, attics, workshops, and underground shopping malls, installing VT70E dehumidifiers is an economic way to reduce humidity levels, prevent mold and mildew, and remove odors.

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AF650 Industrial HEPA Air Scrubber for Mold Remediation

AF650 Industrial HEPA Air Scrubber for Mold Remediation

Air scrubbers play an important role in Industrial Air Purification, Construction and Renovation, HVAC Systems, Healthcare Facilities, Mold and Fire Damage Restoration, Commercial and Residential Use, and Environmental Protection. The AF650 HEPA air scrubber Quality is absolutely guaranteed, the wholesale price is reasonable, a large quantity of favorably.

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CFZ40 Heavy Duty Industrial Dehumidifier for Greenhouse

CFZ40 Heavy Duty Industrial Dehumidifier for Greenhouse

PREAIR CFZ series of industrial dehumidifiers are designed and built for cultivation, providing professional humidity control for successful grow operations. These units remove moisture from the air, helping control humidity in various-sized grow spaces. They powerfully circulate air within your cultivation space to create a healthy, grow-optimized environment. Please email us your requirements, and PREAIR will respond as soon as possible.

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HT 500 Commercial Portable Dehumidifier with Compressor

HT 500 Commercial Portable Dehumidifier with Compressor

The HT-500 portable dehumidifier is designed for removing extra moisture in commercial buildings. With a rigid sheet metal housing, this unit can be applied in harsh environment. It can extract 50 liters of water per day at AHAM (30°C/80%RH) suitable for an area of 50-70㎡. PREAIR is a professional commercial dehumidifier manufacturer that can provide large-quantity high-quality dehumidifiers with customized designs. Welcome to consult!

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500 PPD Professional Dehumidifier for Greenhouse

500 PPD Professional Dehumidifier for Greenhouse

Powerful and efficient, the PREAIR PRO500 is a 500-pint dehumidifier and is perfect for agricultural applications as well as tough commercial spaces. Its 500 pint capacity makes it one of the most powerful commercial dehumidifiers on the market.

 
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330 PPD Wall Mounted Dehumidifier for Grow Room

330 PPD Wall Mounted Dehumidifier for Grow Room

PREAIR PRO330 dehumidifier is designed and built for cultivation. This industrial unit removes up to 330 pints of moisture per day, and powerfully circulates air within your cultivation space to create a healthy, grow-optimized environment. Setup is simple, and humidity is constantly controlled to help prevent crop disease and pests.

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300 PPD Best Industrial Greenhouse Dehumidifier for Sale

300 PPD Best Industrial Greenhouse Dehumidifier for Sale

If you’re struggling with excess moisture when growing indoors, you need the best grow room dehumidifier for the task. Whether you’re a hobbyist growing in a tent or a commercial grower with hundreds of plants packed into your facility, you need a dehumidification system that can stand the test of time and protect your crop. PREAIR is one of the most reputable dehumidifier manufacturers that is able to provide tailored dehumidification solutions for your indoor cultivation.

 
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HT 1501 Commercial Powerful Dehumidifier Self Draining

HT 1501 Commercial Powerful Dehumidifier Self D...

VT70E Energy Efficient Dehumidifier for Crawl Space

VT70E Energy Efficient Dehumidifier for Crawl S...

AF650 Industrial HEPA Air Scrubber for Mold Remediation

AF650 Industrial HEPA Air Scrubber for Mold Rem...

CFZ40 Heavy Duty Industrial Dehumidifier for Greenhouse

CFZ40 Heavy Duty Industrial Dehumidifier for Gr...

HT 500 Commercial Portable Dehumidifier with Compressor

HT 500 Commercial Portable Dehumidifier with Co...

500 PPD Professional Dehumidifier for Greenhouse

500 PPD Professional Dehumidifier for Greenhouse

330 PPD Wall Mounted Dehumidifier for Grow Room

330 PPD Wall Mounted Dehumidifier for Grow Room

300 PPD Best Industrial Greenhouse Dehumidifier for Sale

300 PPD Best Industrial Greenhouse Dehumidifier...

applications

Dehumidifiers play a vital role across a wide range of environments. Preair’s commercial dehumidifiers are used in cellars, basements, garages, warehouses, shopping malls, and conference rooms—places where humidity control is essential for keeping comfort and safety.
For more demanding environments, industrial dehumidifiers are utilized in textile factories, food industries, tobacco plants, electronic plants, tanneries, ceramics workshops, and on construction sites, where controlling humidity helps protect equipment and materials.
In residential settings, home dehumidifiers help create a more comfortable and healthier indoor environment by reducing excess humidity, preventing mold growth, and improving air quality.
Pharmaceutical Industry

Pharmaceutical Industry

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Pharmaceutical Industry

Pharmaceutical Industry

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Pharmaceutical Industry

Pharmaceutical Industry

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projects

At Preair, our mission is to deliver tailored dehumidification solutions that meet the unique needs of our customers. We serve a wide range of clients, including commercial growers, restoration professionals, shopping mall operators, factory owners, and more. 
Visit our website to explore real-world case studies and see how our solutions have made a difference across various industries.

Customize a Dehumidifier

Qualifications

As we grow our global presence, Preair dehumidifiers are earning recognition from more regional and global certification agencies, ensuring trust and compliance across markets.

  • ISO45001 CERTIFICATE
  • ISO9001 CERTIFICATE
  • REACH CERTIFICATE
  • CE CERTIFICATE
  • CCC CERTIFICATE
  • UKCA CERTIFICATE
  • GS CERTIFICATE
  • ISO14001 CERTIFICATE
  • BSCI CERTIFICATE
  • ETL CERTIFICATE
  • ROHS CERTIFICATE
  • CRAA CERTIFICATE
  • SAA CERTIFICATE
  • CEC CERTIFICATE
ProTECH. ProDRY. ProCONTROL

With a track record of serving 100+ factories, cultivation facilities, and commercial environments, Preair specializes in delivering customized, effective solutions that truly work.