Check it yo! Remember the 6000BTU window A/C project I was working on. Well, its somewhat done now, done enough to see some massive results. I have already dropped 25F even under load. Radaitor temp is 54.3F, core temp is 69.9F.... YES! However, its not totally complete, as the 120mm fan is NOT powerful enough to keep up with the A/C's fan, DOH! So I have insulated ducting running from the output of the of A/C, and the radaitor sitting in front of it...and its making a MASSIVE impact in operating temps already. Hmmmmm....however, we are going to put the radaitor "into" the ducting, but the little fan just can't keep up, I need a DESPERATE suggestion to a MIGHT DC fan that will handle that kind of air flow...