I had an idea about the water lines and cold temps... Not sure if it could work, I'm not really experienced in trade skills and such.
Anyway, I wonder if there's a way you could put the water line(whatever gauge it may measure) inside of a lager gauge line and use antifreeze and seal it off in there real well. Y'know, as a liquid insulator or something.
Sorry, I'm at a loss for efficient description words. Does that make sense? Would it be possible?
If so, same concept can work with the water tank too right?