What is the difference between Pex A and Pex B?
Should I care which is used for my plumbing lines in my house?
Why might you pick one over the other?
Pex A is cured with peroxide. Pex B with silane, Pex C with radiation.
There are not any real differences in their performance ratings (ASTM F876 and ASTM F877).
Pex B does better on out of spec pressure and is better in chlorine testing, but all meet the standards.