Did a full winter in Colorado. Got into the teens regularly. Never had any water lines internal to the rig/basement freezing. Kept warm between the furnace, two electric oil heaters, and heat escape from the living area was sufficient to protect tanks. Did not have tank heaters on that unit.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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