I think I woke up in a refrigerator this morning. I do not do cold well. Most small RV's and travel trailers are not built for cold weather. Mine is like living in a tin can. Walls of steel, paneling, and I would imagine very little insulation. Probably a minus 2 rating.
However the faculties in my little house are more than adequate: Forced air furnace for cold, AC for heat in summer.. Buuuuut one needs to turn said options ON. The thermostat was set at 70 degrees when I retired for the night, and I was comfortable then. My sleeping bag is good for Arctic temps, so I was very warm until I woke up, and poked my nose out. Big dummy....the thermostat was set on the AC side, so the furnace did not turn on. Hit the switch for the furnace, and it turned on in mil-second. My life has been saved.
How cold was it? TWENTY SEVEN DEGREES. My northern friends may laugh at me for being a wimp, but if it's not 70 degrees when I step outside I'm pissed. So laugh at me. I may just hibernate for the winter. I know today it will be hot coffee, and a good book.