re: Garages with AC— who has them??

$4k seems expensive, what is that for a 3 ton unit?

A window unit if you can mount one will knock the edge off. I had one in the shop attached to my garage in my last house, just a small 5k-6k unit and it would freeze me out if I left it on even during the summer. It is way cheaper. If you spend a lot of time in your garage it is worth it, I had my reloading stuff out there and would sit at the bench for hours sometimes.