We just got an '05 Scottsdale 3456 and I'm inquiring about the heated storage/tanks. I know I have ducts running into some of the compartments but I've read on some of the forums that there is a switch somewhere to turn on a fan or fans within some of the ductwork to help keep the water tanks from freezing. I've looked all over and can't find such a switch. Would appreciate info from owners.
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If they are ducted, most likely it is from the LP fired, 12V powered furnace.
However, if you have supplemental heat from engine coolant, a fan could push that extra heat through all the furnace duct work as well.