Fans, ceiling vs. horizontal in greenhouse

[Ray]

I think the fan company is not advising with knowledge of what your goal is. In order for one fan to have sufficient effect throughout that large of a structure, the wind speed under it would likely be excessive. The idea is to provide a tumbling, "buoyant" environment, not a breeze.

In a 10 x 30 structure, I would recommend a minimum of three fans in a high-roofed structure, and maybe six would be better, if the ceiling is lower. They don't need to be huge.


Ray Barkalow
firstrays.com