All the newer propane convection heaters are perfectly safe to use indoors. Never heard of one that wasn't. Also the new ones have low oxygen sensors and thermostats that turn them off. How ya' going to get in trouble with that? I have one hung on a wall in my new shop office (15'x30') and it performs great. I actually like it better than the Garage Heater I have suspended from the ceiling in the auto shop because it doesn't have a loud blower. I see them in lots of homes in MO where I built the new shop.
