In each basement compartment heated there will be a 3" silver high temperature hose sticking down about 2 inches (my coach has three heated basement compartments). The water lines that cross the coach under the floor are encased in a protective heated tunnel above the gray water tank. The only place where there is a potential for freezing on my coach is the outside shower.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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