Well, Tuffr2 asked me to report on our cold-weather trip this weekend, so here goes.
We travelled to Fort Mountain State Park near Calhoun, GA on Firday, 1/18. By the way, great park. Great staff. Great hiking. Beautiful views and cascades. Anyway, we checked the weather forecast and predictions showed the lows to be in the 20's. The trailer handled these temps just fine. No freeze problems and with the normal propane heat, we were cozy and warm.
Rained 14 straight hours on Saturday, so it was all day in the camper. That night was back down in the 20's but again, plumbing was fine and we were comfortable and without the heat running constantly. However, the rain the day before along with the cold did present a problem.....frozen locks!
Our passthru, toolbox locks, and power padlocks were all frozen. Had to use hand propane torch and de-icer to resolve that. Again, more of an inconvenience than a real problem.
Sunday was in the high 20's all day, and again, no problems. What we didn't know (because we had NO cell service what-so-ever) was that the forecast had changed. The low on Sunday night went down to 9-degrees!
At 1:30 am, the pipes were fine. At 4:30 am...….well, nothing. No running water. We were frozen! Also, the gray and black tank valves were frozen shut so I couldn't drain them!
Needless to say we had a very sick feeling that we had gambled and lost! We had visions of thousands of dollars worth of repairs.
After breaking camp at dawn and driving home (1.5 hours). We unpacked and I hauled it to CW of Chattanooga. They thawed the trailer overnight in their shop and did a full-pressure test the next day. They also thawed and checked for any leaks in the tank valves.
Praise God that there were NO leaks!!
No problems at all! We had dodged a bullet. It was a $330.00, cheaply-learned lesson. Basically, we learned that our trailer can handle temps in the 20's with no problem, but any lower and we risk problems unless we skirt and heat the underside of the trailer (too much hassle for just a weekend trip).
Other lesson: during cold trips, always carry a small propane torch and lock de-icer. Also, if it rains a great deal with freezing temps, cover your trailer cable plug to keep ice from fowling your braking.
Safe travels!