How many CFM fan to cool 2/400 watters and a 600 watt air cooled hoods?

Is there a formula for this. Will be running a separate fan for odor control. Dont feel like wasting the heat from the bulbs this fall and winter.

Winter is a loooong way away, better start thinkin summer. Flow rates can be determined but you are better off testing your run after every light to see if you need a booster. I am currently running 6 600 on 2 6" inlines, one at the beginning and one at the end

Yes, there is a formula. 90 cfm for each 400w reflector, 125 cfm for each 600w reflector, and 200 cfm for each 1000w reflector. Most 6" fans are around 400 cfm, so you'd be good with one of those.

+ WitchDoctor + said:

Yes, there is a formula. 90 cfm for each 400w reflector, 125 cfm for each 600w reflector, and 200 cfm for each 1000w reflector. Most 6" fans are around 400 cfm, so you'd be good with one of those.

Click to expand...

Sweet, thank you sir! + 1 on the rep for you. Very helpful.

I am so confused about the differences of fans.. Booster vs. inline?? Sorry.. i just ordered a 6" inline fan and just trying to learn.

Garm said:

Sweet, thank you sir! + 1 on the rep for you. Very helpful.

Click to expand...

No problem, glad I could help

MsJazzy said:

I am so confused about the differences of fans.. Booster vs. inline?? Sorry.. i just ordered a 6" inline fan and just trying to learn.

Click to expand...

Hi MsJazzy. An inline fan (blower) is for exhausting the room or the reflectors, or for using a carbon filter inside the room. A booster fan is meant to be used in the middle of the series of reflectors somewhere just to keep the air moving and give it a little "boost" in the right direction. However booster fans aren't strong enough to pull air through a reflector or a carbon filter on it's own.