Ditto on the electric heaters. We have the same as Matt & they kept our RV warm, when the outside temp was 22 degrees. I just sat the furnace on 46 degrees & it never came on, as both heaters cycled all night. I was more worried about the water hose freezing than the heat, but it was ok too.
Steve & Sharon
'13 Dodge Citadel (hers)
'12 3500 Dodge Mega Cab 6.7 Cummins (his)
'12 Crossroads Rushmore RF38FL (ours!)
Barry, the ADHD x 2 German Shepherd mix, Granddog.