I know alot of you guys have either shops or detached garages where you work on your projects, but what do you do for heat? I've got a 2-car that's very poorly insulated, and for now I'm borrowing climber8483's propane Reddy heater, which works great but I have to have the windows open to vent the fumes from it. What do you guys use? It's got a wood stove (without fan) in there too, but when it's really cold the stove doesn't do much at all. I've considered getting a used pellet stove if I can find one for cheap, but I'm wondering if there are other options that'd serve me better. Thoughts?