A lot of that depends on where your house is built. I have a house in an area that can go an entire winter without getting much below 40F. No one builds with "f

A lot of that depends on where your house is built. I have a house in an area that can go an entire winter without getting much below 40F. No one builds with "freeze-proof" faucet design, which recesses the valve to the outside water faucets within the wall. I had two pipes freeze and burst after 3 days of freezing temperatures (first time anyone can remember being more than 24 hours below freezing). One was an outside faucet, properly protected and insulated. The other was frozen inside the slab, near the wall.