A couple weeks ago we experienced several nights below freezing in our travel trailer in Arizona and Utah. The coldest night was 24 degrees. Had absolutely no problems. The only thing I did to prevent problems was to remove the outside shower head from its hose and bring it inside. The valves for the outside shower were still vulnerable, but there wasn't much I could do for them other than keep the bathroom cabinet door open and the bathroom door open to allow warmer air to access the areas closest to the outside shower.
Temps around 30? Nothing to worry about.
-Speak
