Our garage has always been drafty. This causes it to cool off pretty rapidly in the winter and heat up pretty fast in the summer. Despite the fact that it’s not insulated, stopping the drafts should help stabilize the temperature somewhat. We have two side doors at each end of the garage. I added new aluminum thresholds and bottom door sweeps as well as weatherstripping around the perimeter.
I installed a shelf above my primary air compressor for my portable unit and added some hooks underneath to keep air hoses and extension cords organized.
We have several windows in the garage; two in the side doors and this one adjacent to our front walk. They originally had blinds, but they were pretty beat up so we tossed them. We didn’t like leaving them clear though, so I added some frosted film to the windows so we have some privacy.