Numbskull
+1y
I use 2 small commercial electric shop heaters. they are about 300 each. 220 volt. I can get my 2 car garage up to 80 with them on a 10 degree day. workable temperatures within 20 minutes. they are cheap to run, they don't smell or make fumes, they are quiet, i don't need to mess around with kerosene or propane, i didn't have to run a gas line out to my garage, and when i sell the house i can unplug them and take them with me to use at my next place.