SAMPLER
Well-Known Member
Whether the fan is pushing air down (from top) or pulling air down (from the bottom) the air is still going top to bottom at the same average velocity. Note, I said "average". As air is pushed out of a fan it isn't uniform. There's something called "fan affects" that influences the air profile. in other words, it is higher in some areas and lower in others. But on the suction side, it is more uniform. So sucking the air through will give a more uniform profile than pushing it through.
Sounds pretty simple. I guess I'll have to do some further planning for next season. I'll keep an eye open for some sort of exhaust fan. Thanks for the clarification