quote: .. are they all wrong? Also, if we keep the faucets running, it seems to me they have to go almost full blast in order to prevent freezing since introducing 34 degree water at a drip or trickle is in no way effective in keeping a 10 degree hosebib from freezing. Anyone that's ever turned on the cold water faucet during cold weather knows how cold that water is... if it's not in the 30's,
1. YES! Unless you are misinterpreting what they state.
2. It only takes a small amount of flow to dissipate the chilled water.
3. When you turn on a "cold faucet" in the wintertime, it may be cold, but it is NOT 32 degrees. And since cold water has entrained air and other "minerals", it freezes below 32 degrees, but hot water has that "stuff" precipitated out during the heating process so it WILL freeze at close to 32 degrees, which is why it WILL freeze sooner than cold water. If the heater is on "vacation" or any other operating temperature, it will NOT be able to cool down to the freezing point so you do not have to drain it, but if it is completely shut off, then it should be drained or it WILL freeze and deform, if not rupture.