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Greenhouse Circulation Fans - Even Air Flow, Quiet Running
Circulation fans for greenhouse air flow, keeping temperature and humidity balanced, cutting condensation and running quietly with moisture proof motors. .
TEL：+86 191 5068 3942
  • Features
Greenhouse interior with hanging irrigation hoses over seedling trays and a wet curtain wall behind
 
Close-up of a ring blower circulation fan unit with motor and outlet pipe on a concrete floor

What the Circulation Fans Do:

The circulation fans keep the air inside the house moving, so the temperature and humidity stay balanced instead of collecting in layers. That movement also cuts the dripping that forms on the covering, because moist air does not sit against a cold surface long enough to condense and fall on the crop. With the air moving, the plants grow more evenly and the crop uses less energy to get there.
 

How the Fans Are Built:

The professional moisture proof design process protects the motor and the bearings from the damp air they work in. Both the air volume and the blade speed can be adjusted, so the same fan can serve a small bay or a long run of the house, and a long lifespan, low noise and low power consumption are the three points growers ask about first when the fans are running day and night.
 

Moving Air Inside a Sealed House:

A closed house holds its heat, and that is the point of it, but still air is what causes trouble: the warm air collects under the roof, the air along the floor stays cooler, and the leaves near the covering sit in a film of moisture. Fans running at low speed keep looping that air around the house so the layers do not form and the crop dries off after watering. Because the fans only move air rather than heating or cooling it, the running cost stays low compared with most other items of equipment in the house.
 

Fitting Fans Into a Greenhouse Set:

The fans are supplied as part of the wider greenhouse equipment range, alongside the greenhouse accessories that carry them and the systems they work with: cooling and heating, irrigation systems, ventilation, lighting and automatic control. If the house has a natural ventilation system, the greenhouse ventilation equipment is specified at the same time so the fans and the vents are not working against each other. You can read more about Bozong Greenhouse, or ask us which fan suits your house: call +86 191 5068 3942 or send an E-mail to sales@cngreenhouses.com.
 
Notes on air movement in protected cropping are published by industry associations such as the NGMA, and commercial greenhouse practice is reported by trade media such as HortiDaily.
 

Frequently Asked Questions:

Q: How long does the greenhouse structure last?
A: The frame uses hot dip galvanized steel, which is rated for 15-20 years of service and backed by a 10-year structural warranty.
Q: What is your delivery time?
A: Around 1 month after we receive the deposit. Every greenhouse is custom-built, so the exact schedule is confirmed when the order is placed.
Q: What information do you need to quote a greenhouse?
A: Tell us the quantity you need and the crops you plan to grow, along with your local conditions such as temperature range and average wind speed. With that information we can recommend a suitable system and send you an accurate quotation.
Q: What problems do circulation fans solve?
A: Three main ones: temperature and humidity that would otherwise sit in layers, condensation that drips from the covering onto the crop, and air that stays still around the leaves after watering. Moving the air keeps the house even and helps the crop grow with lower energy consumption.
Q: Can the fan output be adjusted?
A: Yes. Both the air volume and the blade speed are adjustable, so the same fan type can be set for a short bay or a long run of the house.
Q: Are the fans suitable for damp greenhouse air?
A: Yes. The fans use a professional moisture proof design process, and they are built for a long lifespan with low noise and low power consumption.

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