tomthehippie is right, and depending if you're using 1000+ watts of HPS or MH, I doubt your fan is going to be sufficient. My room exchanges air every minute, and it has heat build-up problems. Without air conditioning it's tough to keep the girls cool enough when the outsid temperature hits over 80F, and each 1000W light produces 3000 btu of heat.
By the way, I was in the heating/airconditioning biz for 10 yrs.
SpaceNeedle Reviewed by SpaceNeedle on . Need your help and advice on vent design I have a room 14.7'x7.54'x8.26' in feet or 4.37x2.3x2.5 in metres. You can see on the pic. Iwant to design the vent path over this growroom. I have powerfull inline fan, but have no idea how to line ventilation ducts to maintain air flow through plants and hps cooling . Please feel free to draw on the pic. Thankyou Rating: 5