Jim, The atwood draws 1.2 amps when it's running. As you know, serious winter camping isn't really an option in the EggCamper. There is some insulation, but if the temperatures are down to the teens, the furnace
would have difficulty keeping up. We use the furnace more for temps in the 30s and 40s. With that said, the solar
does fine for the times of year that we camp.
(BTW, I copied your idea of adding a hatch to shut off the A/C vent. I also closed off the original air intakes on the underside and re-routed the intake through the area now covered by the new hatch. This makes a huge difference, cutting of the infiltration of cold air.)
provides 150 amp/hours to play with. Our daily draw in the spring and fall
is somewhere between 30 - 35 amp/hours, using heat and refrigeration. Daylight here in the dead of winter is about 1.5 hours of useable sun, and the solar
doesn't provide enough to keep the battery topped off. The fridge
is the big draw at over 3 amps when running. But in the spring, summer, and fall
we get more sun and use the heat less, so the solar is plenty to keep us off the grid for as long as we'd like.
Long ago, I replaced all of the interior lighting
with LEDs. It was easier than piping propane to lighting
p.s. I'm bummed that we won't make the Mid-Atlantic rally
this year. I have a conflict with my grandaughter's wedding. Perhaps Mid-Atlantic 3 in 2013.