I put in heat and air with in the last year. I have aged to much to sweat or freeze while piddling in the shop.
nothing like having a nice place to work on the Slingshot. I built my play room in 1983 to support the dirt bikes. It was a man cave before they even came out with those two words. Heat and air, surround sound (big speakers) for the home theater sound and the big TV. Have fun and ride safe. Look me up if you are ever in the area.