what CFM do reccomend
- Thread starter namtih024
- Start date
209whitebread
Active Member
i have 6 inch air cooled hoods using a 435 cfm fan pulling air out, and the same fan bringing in fresh air, is your hood 4 or 6 inch?? whatever size it is u dont have much of a choice, the bigger the hole the more power the fan will have, i tried an inline fan that said up to 188 cfm, garbage
roidrage152
Active Member
Tubes are very efficient to cool, a decent 4" inline will probably do the job depending on your ambient temps. You may need flanges/reducers to match your tube size. Ultimately I would just buy the fan that fits your tube. Can't have too much cooling, and can always use a speed controller if you want. Those cost like $20. I cool 4000w in hoods (less efficient than tubes) with about 1400 CFM with a speed controller to bring heat up at times.
gargantuanganja
Well-Known Member
I have a 635 cfm fan running through an enclosed Magnum-XXXL hood with a 1000w HPS and it still gets pretty hot in there so I added a portable A/C unit. I'd recommend something above 400 cfm for sure
namtih024
Active Member
thanks guys, its a 6inch tube by the way, ill prob go with something in the 400 to 600 cfm range. i idea is to try and outfit a box with an oversized light while maintaining optimal temps, to increase yeild in a limited space.
thanks again, and anyone with experience using a 400w hps in a cab feel free to chime in and offer some thoughts
thanks again, and anyone with experience using a 400w hps in a cab feel free to chime in and offer some thoughts
damm! I run a 400 hps in a hood w/ 2 pc fans,1 @ the start of duct pushing air & 1 @ the end sucking air out -straight shot,4 in duct, no bends or filter. & the hood is warm but not hot to the touch. the air is drawn from another room in the basement so its cool going in.