So, have you kept warm with this set up? I assume you are running inside heater(s) as well?

We had to get a small heater for my Son and Daughter when it dipped below -10 degrees. The insulation kept a lot of the cold out. I also used reflective padding on the ground to keep the cold from the ground from coming up. We keep the heat at 66 on the thermostat and go through about 60 lbs of propane every 3-4 days depending on the temperature. This is my first Travel Trailer and I'm trying to learn as I go.

Dmatwoo, there are several good YouTube videos about winterizing rigs. I have been watching them. There are lots of tricks in those videos. Condensation can be a real problem, as you know. Wrapping water valves and black water hoses, anti freeze in the black tank, reflecting on the windows and vents, rugs on the floors, etc. someone even spray foamed his tanks. 20 below is very, very cold. Yikes!!