Posted 12/30/2020 04:07 (#8707489 - in reply to #8707351) Subject: RE: Garage heat
East central Iowa
I would put in a 45.000 btu hot dog or whatever brand LP forced air hanging heater.
I have one in about same size garage, 24x30. I don't know how much gas it uses , but very very little.
Keep garage at 60 all winter. Then if big get together just turn up and you have extra space
About $600 and an afternoon and your done.