My shop is a 20'X24' garage with two insulated walls, and no isulation in the ceiling. I live in Western Wisconsin, so it gets colder than a mother-*$&%#$ out here. I'd like to find a semi-portable method of heating my shop so that I don't have to stop working all winter. The building is a rental, so I'm hesitant to install a big heater that is going to be too tough to take with when my wife and I buy a house (probably next spring). The shop has a chimney (though I have no idea why) so I may be able to use that for a vented heater.
I only need it to be heated to, say 50 degrees or so, just enough to keep me from freezing solid, but I want the heat to be relatively safe, and to try and keep my tools from rusting when I heat the building up (It will only be heated whn I'm working). Electiric heat is out, because the electrical service is not the best, and I don't want to trip the breakers every time I use a tool, so I think I'm going to need propane or a wood stove.
I've seen the tube-type "jet" heaters before, and they seem to work pretty well, but is there another type that may be safer to use around wood that would work? I can't say that money is not a limiting factor, but I'm willing to invest in the right tool for the job at hand. I'd love to insulate and sheetrock it, but the wife says no way, since I don't own the building and we intend to move fairly soon.
Thanks for any advice!