...I just let gravity do its work (with all the taps open at halfway between hot and cold). Fresh water is only ever drained at home, in case we decide we need some "in transit".
In 30+ years of motorhoming, and despite some very low temperatures, I've only had one mishap. I once forgot to remove and drain the water filter cartridge - it retains water despite any drain-down - it resulted in the plastic/composite filter casing disintegrating (luckily, as they aren't cheap, it was due the annual replacement, and I had one to hand). I think it was -11 that night.
|