Research and contemplate a Camco Olympian Wave catalytic gas heater before you pull the trigger on a diesel or gasoline heater. I researched the crap out of this subject and ultimately decided that the Camco was best for my needs, which is heating the canopy of my truck during the winter for wolf hunting excursions. There are three different sizes of heaters that Camco produces (Wave 3, Wave 6 and Wave 8) for different (size) applications. I bought the Wave 3. A friend of mine got to experience my Camco heater and he bought one to heat is utility trailer, which he converted to a camping trailer, and his wall tent. He, too, is very happy with his purchase. One of my main reasons for going this direction was to eliminate that power source requirement of diesel/gasoline heaters and the potential for eternal slumber associated with non-catalytic gas heaters (think the Mr. Buddy Little Heater) that put carbon monoxide into the heated space. Good luck with your decision.