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March 10, 2020

Move and refresh the stagnant atmosphere in your greenhouse or building to create a healthier and more productive growing environment. These greenhouse exhaust fans are excellent for reducing plant and employee heat stress. Our exhaust supporters provide excellent ventilation for high tunnels and frosty frames. Create a cooler more comfortable growing environment, which can directly contribute to productivity, quality and profitability for your greenhouse business. Exhaust fans also works great in workshops and buildings.
Move and refresh the stagnant air flow in your greenhouse to make a healthier and more productive environment. These exhaust & circulating fans are excellent for plant growth. Create a cooler more comfortable 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 built prior to the 1950’s got some kind of vents or louvers which were opened to allow the excess heat to escape and cooler outside air 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 followers that draw outside atmosphere through louvers in a single endwall and exhaust it out the opposite end. With thermostatic control, this was, and still is the accepted method for cooling many structures where positive air movement is needed.

Growers with hoophouses possess found that roll-up sides work well for warm period ventilation. Both manual and motorized systems are available. A location with good summer season breezes and plenty of space between homes is needed. It helps to have greenhouses designed with a vertical sidewall up to the height of the attachment rail to reduce the quantity of rain that may drip in.

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