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My 2019 384BR has a duct that blows hot air from the propane furnace into the underbelly. Also a tank heater on the fresh water tank.
Last winter when it got down to 0 degrees even with the furnace running the useless outside shower at the back of the unit froze then started leaking. I dropped the underbelly and tightened the connections and it stopped. Next time at 0 degrees it busted. I unhooked the outside shower in the back and plugged the lines and have had no problems since.
My dump valves also froze for a day during that 0 degree spell.
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2019 Montana High Country 384BR
2018 Ram cclb 4x4 6.7 cummins/aisin dually
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