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Originally Posted by FlyingScot
I do a half-assed version of this. I turn off water main in basement, then flush all the toilets and open spigots in basement. This does not eliminate all the water, but it at least minimizes the water in the pipes. Reduces chance of freezing, and if there is something cracked somewhere, it will not leak until you are back in the house and can arrest flow immediately.
Also, this allows me to come up for a few weekends and turn the water on/off quickly
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That's not a bad compromise, just doesn't address any "low spots" in the system that will collect water. At least it is not under pressure and like you said there is room for some freeze expansion. Low spots really become the only liability at that point.
It's really pretty simple and inexpensive to get the stuff necessary to blow the house if you wanted to go that route.