Big amplifiers and heat dissipation in a small room

I had a pre/power amp that generated about 800W of heat in a tiny room (9x11), making them uncomfortable during summer. One obvious solution is to crank up the AC, but I am looking for an alternative route. One option is a ceiling vent with a fan (which connects to the attic). Another is to put a vent (with or without a fan) in the side wall near my rack close to the ceiling (since hot air rises) and so that I can dump the hot air into the next room (closet). The wall behind the speakers has big windows-may be I could vent through the window. Anyone have experience modifying the room for heat dissipation? Any suggestions will be appreciated.