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degggendorf t1_j15rko6 wrote

I thought it was more about providing pressure relief for when they do freeze, like in this This Old House clip: https://www.youtube.com/watch?v=AuPO5hKdo8A

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12stringPlayer t1_j168b74 wrote

That too, if you're thawing pipes you absolutely want to open the faucets as they thaw out, especially if you're using a heat gun/hair dryer to thaw them out.

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degggendorf t1_j16jgvy wrote

That's the opposite of what the video showed, it shows the pressure rise from the pipes freezing.

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