What's your guess? How fast do water pipes freeze AFTER indoor temperature hits 32*F on it's way to 25*F?
Let's assume also:
- water pipes are all in interior walls
- water is not moving (stagnant)
I know building heat loss varies dramatically... that's why I'm saying to assume when indoor temp falls to 32*F.
I'm trying to assess my risk exposure to frozen water pipes when the electricity goes out. Since we are on a well, a backup generator would be a nice convenience, but I'm trying to separately assess risk of frozen water pipes.
Thanks for your guesses,