Move and refresh the stagnant air in your greenhouse or building to create a healthier and more productive developing environment. These greenhouse exhaust fans are great for reducing plant and employee heat stress. Our exhaust fans provide superb ventilation for high tunnels and frosty frames. Create a cooler convenient growing environment, which can directly contribute to efficiency, quality and profitability for your greenhouse business. Exhaust supporters also works great in workshops and structures.
Move and refresh the stagnant air flow in your greenhouse to make a healthier and more productive environment. These exhaust & circulating fans are great for plant development. Create a cooler more comfortable growing environment, which can directly contribute to productivity, quality and profitability for your greenhouse business.
The idea of cooling a greenhouse with thermal buoyancy and wind goes back to the start of controlled environment. All greenhouses constructed just before the 1950’s got some kind of vents or louvers that were opened to allow the excess heat to flee and cooler outside atmosphere to enter.

When polyethylene originated with large sheets covering the whole roof, putting vents on the top proved difficult. Engineers after that came up with the idea of using fans that attract outside air through louvers in a single endwall and exhaust it out the contrary end. With thermostatic control, this is, and still is the accepted way for cooling many structures where positive atmosphere movement is needed.

Growers with hoophouses have discovered that roll-up sides work well for warm time of year ventilation. Both manual and motorized systems are available. A location with good summer season breezes and lots of space between houses is needed. It can help to have greenhouses designed with a vertical sidewall up to the elevation of the attachment rail to lessen the quantity of rain that can drip in.

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