Originally Posted by bwaysteve
Gutted the AS and removed the International Oil Burner Furnace per Andy's suggestion for safety reasons(this unit blows up)I am now considering what to do for heat when I get to that point.I no longer have vents to the rear and have installed a grey tank aft last axle. I am considering going with catalytic heat.I am in Texas so we rarely get in the 20's.What to do to keep the tanks from freezing when those few cold days arrive.Antifreeze?I have seen tank blankets you lay on the tanks under floor and plug in when needed.What do most of you do that have this set-up? 28 ft.
The original design of the heating system, was to divert part of the hot air from the furnace, to surround the black water tank, to keep it from freezing. But, if the furnace was shut off, then trouble happened.
Catalytic heaters do not have a forced air fan, therefore they cannot provide any heat to the tanks.
You have to decide which way you want the system to protect itself, or not.