You know, an AC unit may actually help save you money on power in that room
The hotter the Ambient temps are, the hotter the load temps are (its quadratic not linear), You would have fans running on lower voltage.

Not only that but the hotter a PSU the more inefficient it gets, buy ALOT. Drop the Ambient temps 5 degrees and you may end up getting much better Wattage efficiencies, Also Their are full Mobo Water blocks out there, but usually only for Boards like the EVGA Sr-2.