I'm a little unsure of what you are asking....
If are really full time, then why would you want the water off?
(We turn the pump off when we are traveling because we had a valve in the head vibrate open and we pumped a lot of fresh water overboard....)
You are keeping the coach warm enough to be comfortable - right?
Then unless all of the plumbing is in the unheated basement, what is the issue?
If you mean leave the pump on, sure.
If you mean leave the water in the water heater, sure.
If I missed something, try again.
Matt
Matt & Mary Colie
A sailor, his bride and their black dogs (one dear dog is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.
