I bought a 12000 btu portable room air conditioner for this room, and it sure helps keep it comfortable while I'm working in there. I plan on leaving it in this room for extra cool during really hot days. (At least it's white.) I'll be venting it to the garage, which is just a hole in the wall from this room.
Be sure doing this is up to code. As I understand it, the powers that be don't like openings from garage to house due to the potential of exhaust fumes getting into the house. Just check before drilling holes.
