Here is how I keep my pipes from freezing.
I call it an "Active Antifreeze System".
The idea is to detect when the pipes are getting cold and then run hot water through them to warm them up. So you don't loose any water in the process you create a loop in the hot/cold pipes.
You need a thermostat and an electric valve to make a loop out of the plumbing. You start at the far end of the hot water pipe, through the valve,… Continue