Okay, as part of my upcoming trip, I will be forced to "boon-dock" one night. The temps will be in the lower 40's overnight. Does anyone know what the amp draw would be with the furnace, or would it be better to run a small electric heater on low setting for a more gradual amp draw. I currently have one group 24 deep cycle and will most likely get another one before the trip to double my battery reserve power. I am worried that the batteries will not have enough juice to keep cycling the furnace for the overnight hours. Yes, I have also thought about an EU 2000-companion generator, but I have been kind of saving my money for the EU 3000, as I don't think the 2000 has enough umph to run the 15k AC.
2015 Rushmore Springfield
Disc Brake upgrade, Goodyear G614 tire upgrade
RV FLEX-ARMOR roof, Mor-Ryde IS suspension
2017 F350 Dually 4x4 6.7 Bronze Fire