jaycocreek wrote:
There is a misconception about when an RV freezes.I have two 1 gallon jugs sitting on my hitch haul in the open and it has been getting down to 27-28 at night and the early 40"s in the day..No signs of freezing in either jug,not even an ice crystal.
So my enclosed RV water lines are good below that..We will see when the jugs begin to freeze.
Now, instead of a full gallon jug put about 1/4" of water in one jug and let it set out with the other full one and see which freezes first. Thermal mass comes into play. The amount of water in your RV's water lines is probably less than a gallon total and it's spread out thus making freezing at any particular spot easier. This is why your water lines will freeze long before the water in the holding tank.
