The moisture problems referred to in earlier posts don't seem to be a problem in your back yard. We ran the same heater in our 26' Overlander in Lake Havasu City and Death Valley Junction this week. My notes say that it was 34 degrees outside at 2900 feet. We ran one heater with plenty of ventilation and we kept the trailer at 63 degrees. Note that we had Prodex in all windows.
If you need it warmer or need more heat due to lack of window insulation, consider the Wave 6 or -- like us -- 2 Wave 3's. We like the ability to warm the rear of the coach in the morning and run the main one up forward overnight.
I mount them on hinges with a flex line. See my Caravel
thread for details.