I use all these things in my work. Im rehabbing an old apartment building right now and it currently does NOT have a heating system. I have a wood stove in one aptmt and i use portable propane tank top heaters in the other one. I also have a salamander/torpedo type propane but its loud and i dont use it much. Used to use kerosene heaters but i feel the propane is Cheaper,Cleaner burning,quieter, and smells a whole lot better. Usually i do houses so a wood stove provides all the heat i need in those cases.