Originally Posted by barron64
I have a 1975 Trade Wind that I am rebuilding as my schedule allows. I had just re-installed all 3 tanks back in the camper and while I was laying underneath on a nice comfy piece of cardboard, I had a thought...Why did Airstream go to so much trouble to insulate and heat the grey water tank while ignoring the fresh water tank?
The grey water tank has a metal enclosure that was insulated with foam board and also has a tube running from the furnace ductwork to the enclosure for heat. Looks like a pretty good setup to keep from freezing. But why wasn't the same attention paid to the fresh water tank enclosure? Fresh water tank just sits in the floor with a 3/4" piece of plywood slid under it for support. No insulated enclosure or heat supply tube. Why all the attention to the grey water tank while the fresh water tank was left out?
The fresh water tank, originally, did have warm air circulating around it, whenever the furnace ran.
Also, that tank was originally insulated.
Lastly, the tank was originally supported with a one inch plywood board.
Looks like a previous owner made some big short cuts.