I build in my basement and it works great. I run a dehumidifier 24/7. My forced air furnace is down there and it has 3 registers that I can open or close to let in heat or AC. The temp stays pretty consistent from 68 to 74 degrees and the humidity runs from 42 to 56%. I built a small spray booth out of plywood and an old furnace blower and some filters that works nicely for small spray paint jobs or bench sanding.