For the little cost and effort the water lines could be covered with pipe insulation to keep them from freezing in anything below 32 degrees which we see often in the southwest in winter. It's not just the Elkridge. I've talked with a number of Big Horn and Landmark owners that have had the same problem. To say the coach is good down to zero but neglect to say that your water lines inside the under belly will freeze in the anything uner 32 degrees needs to be addressed. Just believe they could do a lot better.