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https://apollovalves.com/article/pex-a-b-or-c-understanding-the-differences

Had a plumber come out to my sisters house cause it was just to much for me to fuck with. He replaced with this and said it could expand to twice its size in a freeze. Thinking of having the whole house re plumbed with it ( small house).

Npw at work we have one line with pex ( not sure what type) but I have had to fix two leaks when not freezing. Of course it could have been fuckin moles chewing on them.

https://apollovalves.com/article/pex-a-b-or-c-understanding-the-differences Had a plumber come out to my sisters house cause it was just to much for me to fuck with. He replaced with this and said it could expand to twice its size in a freeze. Thinking of having the whole house re plumbed with it ( small house). Npw at work we have one line with pex ( not sure what type) but I have had to fix two leaks when not freezing. Of course it could have been fuckin moles chewing on them.

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[–] • 2 pts (edited )

I'm on the opposite team as on this one. Pex A is the good stuff. Also known as expansion Pex. The collar goes on and it gets expanded to put the fitting on. That collar is always and forever squeezing the fitting and I have only ever seen ONE leak in the last 10 years. I have seen lots and lots of Pex B fittings leak (push connect and crimp connect), I have seen lots and lots of copper fittings leak.

I have never replaced any Pex B from freezing, never. I have replaced lots of copper. Pex A is the only way to go as far as I'm concerned. I have seen Pex A all swollen up and frozen hard as a rock. Thawed it out, insulated it and it was good to go. You will never get away with that with copper or CPVC or PVC or Galvie.

Plus you can buy it in long ass rolls and eliminate about half of your connections. If you want any tips or advice on how to do it send me a message and I'll try to help you out.

If the job is too expensive I always tell people to just replace everything above the floor first. Tie into the old plumbing under the house. That way when the old stuff starts leaking you don't get any damage to the structure. (as long as the leak isn't spraying upwards onto the bottom of the floor!!) Then you can go back later and replace a little at a time.