Description
PEX A vs PEX B vs PEX C which One Should You Use
PEX-A, PEX-B, and PEX-C all meet the same baseline standards — then they split hard.
In this video I break down the differences that actually change a job:
• How each type is made (Engel, silane, electron beam)
• Flexibility, shape memory, and heat-gun kink repair
• Chlorine and chemical resistance in municipal water
• Expansion fittings vs crimp vs push-fit — and what that does to flow
• Which type to use for a tight retrofit, a value supply job, radiant heat, or industrial work
PEX is not one pipe. Match the pipe to the water, the routing, and the fitting system you are actually going to install.
0CHAPTERS
00:00 PEX is not one product
00:46 How PEX-A, PEX-B, and PEX-C are made
01:37 Flexibility and kink recovery
02:10 Chlorine and chemical resistance
02:55 Fittings and water flow
03:30 Best use for each type
03:59 Quick comparison and verdict
FIELD RULE OF THUMB
Tight layout, whole-house repipe, or radiant floor → PEX-A + expansion (ASTM F1960)
High-chlorine city water and straightforward supply lines → PEX-B + crimp/clamp (ASTM F1807)
Industrial or chemically demanding spec → PEX-C
Always confirm local code, the print on the coil, and the fitting system before you buy.
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