PEX A expansion vs PEX B crimp fittings cost durability US

Comparison of PEX-A expansion piping and fitting ring next to PEX-B tubing with copper crimp rings on a workbench.

PEX-A Expansion vs. PEX-B Crimp Fittings: Cost, Durability, and Performance for US Whole-House Repiping

August 18, 202615 min read

Evaluating a whole-house repipe? Compare PEX-A expansion rings against PEX-B crimp fittings on material cost, freeze resistance, flow rates, and long-term reliability before hiring a plumber.