Dutch and OM, thank you very kindly for the quick reply. The 20' of vertical exhaust was confounding me and I was actually concerned the air wouldn't make it up without the assistance of an inline fan, but if 3,413 BTU + outside ambient temps is all I need to cover then I think I'm in good hands. That is a great formula btw I won't forget it. Funny enough om, I was just thinking about you (as per my regular habit) and that nifty sharp a/c unit sitting so handsomly in one of your setups, but I wasn't aware that there were 2000watts of PSMH there too. Here goes!

-mini-mac (hah!)
macnasty Reviewed by macnasty on . Air Conditioning Unit Help Hi. Does this work: 10,000 BTU portable a/c unit, cooling a 1000W HPS in a 4' x 6' x 8' room (192 cubic feet), exhausting air 20' UP through the attic and out the roof. The unit's exhaust is roughly 250 CFM. If this doesn't work, could someone give me suggestions on how to make it work? For example, what size a/c unit would work? Or, could I 'assist' the unit by installing an inline fan half way up the ducting, at around 10'? The problem with this latter solution is I don't know how to Rating: 5