Move and refresh the stagnant surroundings 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 stress. Our exhaust fans provide excellent ventilation for high tunnels and chilly frames. Create a cooler convenient growing environment, that may directly contribute to efficiency, quality and profitability for your greenhouse business. Exhaust enthusiasts also functions great in workshops and structures.
Move and refresh the stagnant air 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, that may directly contribute to efficiency, quality and profitability for your greenhouse business.
The concept of cooling a greenhouse with thermal buoyancy and wind goes back to the beginning of controlled environment. All greenhouses built prior to the 1950’s experienced some type of vents or louvers which were opened to allow the excess heat to escape and cooler outside atmosphere to enter.
When polyethylene was developed with large sheets covering the whole roof, putting vents on the top proved difficult. Engineers after that came up with the concept of using 
followers that attract outside surroundings through louvers in a single endwall and exhaust it out the contrary end. With thermostatic control, this is, and still is the accepted method for cooling many structures where positive air movement is Greenhouse Exhaust Fan needed.
Growers with hoophouses possess discovered that roll-up sides work well for warm period ventilation. Both manual and motorized systems can be found. A location with good summer time breezes and lots of space between homes is needed. It can help to have greenhouses designed with a vertical sidewall up to the elevation of the attachment rail to reduce the quantity of rain that may drip in.
Greenhouses with roof and sidewall vents are powered by the principle that temperature is removed by a pressure difference created by wind and temperature gradients. Wind plays the major role. In a smartly designed greenhouse, a wind acceleration of 2-3 miles/hour provides 80% or even more of the ventilation. Wind moving over the roof creates vacuum pressure and sucks the heated atmosphere out the vent. If sidewall vents are open, cool replacement atmosphere enters and drops to the ground level. If the sidewall vents are closed, awesome air enters underneath of the roof vent and the heated are escapes out the top of the vent.