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Tegger[_4_]

" wrote in news:e7fc558c-
:

But wind can be a component of making it easier for pipes to
freeze that are in certain locations, like an exterior wall,
a crawl space that has some drafts flowing through it, etc.
The same pipe that might not freeze at 15F on a calm night,
could freeze on a night with a 20 mph wind.

That's the correct answer. It all depends on
1) exposure to wind;
2) heat emitted by surrounding walls, machinery, etc.;
3) length of time subjected to the low temperature;
4) diameter of the pipe;
5) amount of water-flow though the pipes;
and probably other factors I haven't thought of yet.

--
Tegger