Winter is fast approaching, looking for some garage heat options that won't kill the bank. I've been using a propane torpedo heater, one of the smallest units sold. It works well enough that I can walk around in a tee shirt, but it goes through a (grill) tank of propane every eight hours or so. It's a pain to keep swapping the fugger out, and costs $24 a pop. So my thoughts are to either either find a cheaper source of propane, an alternate form of heat, or find a way to better insulate the garage (probably the most difficult). I've thought about a wood burner, but it'd take up alot of space. Maybe a kerosene torpedo if it lasts longer; at least then I could more easily store fuel. What are you all using out there?