PEX-A vs Copper for Whole House Repipes in Irvine

Material comparison using Uponor/Wirsbo ASTM F1960 expansion PEX-A.

PEX-A expansion fittings (Uponor/Wirsbo, ASTM F1960) resist corrosion from local water and carry a 25-year warranty. We do not use crimp PEX-B. Copper remains an option when the inspection and owner preference support it. We compare actual routing, fitting count, noise, and longevity for Irvine homes during the estimate. Woodbridge and Northwood 1970s–90s tracts with original copper showing pinholes under Irvine Ranch water.