Garage heat

Oil furnaces were abundant around here years ago. Lots switched to electric, and there were all kinds a guy could grab up. Not the cheapest thing to run, but made tons of heat.

insulation first and foremost.
I insulated my 24x32 $100 at a time, took a few months but was well worth the investment. Now i run a pellet stove,a bag a day. Heat is on 24/7 and i like it warm.