I don't have a hard-wired heater in my garage, which is also my ski tuning room. In order to intermittently heat the garage (which is about 625 sq. ft...large enough for two large SUVs, a garden tractor, motorcycle and work area), I would like to utilize a 120v outlet. Propane is no good, as it sucks up oxygen, and causes health concerns. I am thinking that I can go either ceramic, infrared, oil filled or fan. I will probably need 2 of them. Any advise is appreciated.:FIREdevil