Move and refresh the stagnant air in your greenhouse or building to create a healthier and more productive developing environment. These greenhouse exhaust enthusiasts are great for reducing plant and worker heat tension. Our exhaust supporters provide superb ventilation for high tunnels and cool frames. Create a cooler convenient growing environment, which can directly contribute to efficiency, quality and profitability for your greenhouse business. Exhaust followers also functions great in workshops and buildings.
Move and refresh the stagnant atmosphere in your greenhouse to create a healthier and more productive environment. These exhaust & circulating fans are great for plant growth. Create a cooler convenient growing environment, which can directly contribute to efficiency, quality and profitability for your greenhouse business.
The concept of cooling a greenhouse with thermal buoyancy and wind dates back to the start of managed environment. All greenhouses constructed prior to the 1950’s got some kind of vents or louvers which were opened to enable the excess heat to escape and cooler outside air to enter.
When polyethylene originated with large sheets within the whole roof, putting vents on the roof proved difficult. Engineers after that came up with the concept of using supporters that pull outside atmosphere through louvers in one Greenhouse Exhaust Fan endwall and exhaust it out the contrary end. With thermostatic control, this is, and still may be the accepted method for cooling many structures where positive surroundings movement is needed.
Growers with hoophouses possess found that roll-up sides work well for 
warm time of year ventilation. Both manual and motorized systems can be found. A location with good summer season breezes and plenty of space between homes is needed. It helps to have greenhouses made with a vertical sidewall up to the height of the attachment rail to lessen the amount of rain that may drip in.
Greenhouses with roof and sidewall vents operate on the principle that high temperature is removed by a pressure difference created by wind and temperature gradients. Wind performs the major part. In a well designed greenhouse, a wind swiftness of 2-3 kilometers/hour provides 80% or more of the ventilation. Wind moving over the roof creates vacuum pressure and sucks the heated air flow out the vent. If sidewall vents are open, cool replacement air enters and drops to the floor level. If the sidewall vents are closed, great air enters underneath of the roof vent and the heated are escapes out the top of the vent.