90% of our trips are in sub-freezing temps.
I think I can help a bit to this topic.
For info about our camper, and just how simple it is, check out this thread....
http://www.expeditionportal.com/forum/showthread.php?t=34110
It doesnt take much to make it work in the cold.
This camper is what Id consider a fully functional test mule. Eventually Ill be building a camper to replace it.
Even with the temps lingering about 0-degrees F, one 20lb tank of propane will last us a while. T-stat is always set to 65 degrees.
7-10 days for the furnace, with limited entry and exit of the camper.
5-6 days with the furnace, and daily use of the stove. Traditionally ham and eggs w/ coffee for breakfast, and soup/chili and something hot to drink for dinners.
The tank is located outside of the heated camper, though it is well protected in it's own vented compartment. Never have I had a problem with it. Propane naturally looses energy as the temps drop, but it has never effected us enough to worry about.
The furnace and the stove are the only things that run on propane in our camper.
Condensation is always an issue, but has never been a real problem. We do have CRAPPY windows though. Single pane, with alum frames. Condensation city. And ti starts to build up into ice pretty quick. But Ive never worried about it. I just try to keep things away from it, and try to clear it as fast as it builds. Only real problem area is in the sleeping area. One section of the bed is right against the window, so the sheets like to freeze to the window. I just stay at least 6 inches away, and all is gravy.
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What a great rig! I wish my heater would work without power like that...
You gotta love bringing these old campers back to life:coffeedrink:
My LP tank is in a exterior compartment as well, but it only has a thin aluminum hatch on the outside so very little thermal protection.
I wouldn't even think of running my pressure water system since it uses a 7 gal jug hooked up to the outside of the camper... works great in any weather above freezing. I'll just set a 2 gal insulated water jug on the edge of the sink. I think the sink drain might freeze up so I'll take your idea of a sink pan as well.
thanks!