When I moved 4.5 years ago, I'd had my previous shop built into a hillside with lots of shade for the roof from trees. It never got above 72*, if I kept the overhead door shut.
The new shop sits in full sun most of the day and gets unbearable to work in when the temps are over 80*, Sooo. I bought a mini split system and spent the last 3 days installing it. Dang, this isn't like throwing a window unit in. IF I had been thinking ahead 3 years ago, I would have framed in for a couple of those while I was finishing the interior for heat and been done.
Anyway, this works really well and will be a blessing to continue progress on the Camaro and my '66 Chevelle interior over the summer.