Converting Class B to 4 Seasons

loggenrock wrote:
A few times we've been caught by unexpected cold weather. I've found we can still function down to 28° in our Roadtrek without draining tanks, etc. I will open cabinet doors to allow warm air to get to the plumbing, keep the hot water heater on, and run the furnace as needed to maintain an inside temperature of around 50°, for my comfort as well as the plumbings! Haven't had to do this for more than 3 days at a time. It takes a LOT of cold to freeze up 20 gallons of water in a tank, as compared to a few ounces in a pipe... and if black/gray tanks start to freeze, as long as they aren't full there is room for expansion, they will thaw! ST