Originally posted by framer:
I don't have 220 in the garage and the electrical panel is in the basement... So, propane it is!
So Chuck, I assume you don't have natural gas then.
Really, it's not that hard to run a 220 volt circuit from the basement, (probably a lot easier than running a flue pipe) and with an electric heater such as Bill's you have no vent to deal with, no fumes to worry about and no dangerious gas either. Might cost a little more to operate than LP but you wouldn't have to worry about running a gas line or a flue.
If it were me, I wouldn't want to use any gas fired heater in a garage with a bedroom above that doesn't have a flue, vented to the outside - 12" above the roof.
since any "open flame" in a garage must be at least 18" above the floor, the "sealed combustion" units direct vented through the wall would be ok if they just weren't LP gas.
In my opinion
LP gas is just too dangerious because if there is ever a leak, it lays in puddles on the floor since it's heaver than air.
I don't know how cold it gets there or how warm you want the garage to be but you can probably get by fine with around 20,000 btu/hr unless you want the garage to warm up quickly.
Or how about a small heat pump, then you would have A/C in the summer (except I don't think anyone makes one that small)