What makes Uponor PEX-A better than standard PEX?

Uponor PEX-A is manufactured using the Engel method, creating thermal shape-memory. Instead of reducing water flow with insert crimp rings, PEX-A is expanded over full-diameter ProPEX fittings, making the joint stronger than the pipe itself.

Can Uponor PEX-A pipes freeze without bursting?

Yes. Uponor PEX-A can expand up to 300% of its normal diameter during hard freezes and return to its original shape once thawed, significantly reducing the risk of burst pipes in Colorado winters.

Uponor PEX Type A Expansion Piping

The industry's gold standard in residential repiping. Unmatched flexibility, full water flow, and zero crimp rings.

We exclusively install Uponor ProPEX Type A expansion systems backed by a 25-year manufacturer warranty and our lifetime workmanship guarantee.

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Why Master Plumbers Choose Uponor PEX-A

Full-Port Water Flow

Unlike PEX-B crimp rings that choke inner diameter by up to 30%, ProPEX expansion fittings maintain full internal pipe diameter for high water pressure.

Freeze-Burst Resistance

Thermal shape memory allows PEX-A to expand during deep Colorado freezes and contract back to shape once thawed without splitting.

Chemical Immunity

Completely immune to pitting corrosion, scale build-up, and municipal chlorine breakdown that destroys copper and polybutylene.

The ProPEX Cold-Expansion Advantage

Shape Memory Engineering

Manufactured using the Engel cross-linking method, Uponor PEX-A has true thermal memory. The pipe and expansion ring are briefly expanded with a mechanical tool, the fitting is inserted, and the pipe naturally shrinks down tightly around the fitting, creating a permanent watertight seal without glue, torches, or mechanical crimps.

Quieter Plumbing & No Water Hammer

PEX-A dampens the sound of rushing water and absorbs pressure surges from quick-closing appliance valves (dishwashers and washing machines), eliminating banging pipes and water hammer.

Comparing PEX-A Options

Want to see how Uponor PEX-A compares to standard hardware-store PEX-B? Read our detailed PEX-A vs. PEX-B Guide.

Upgrade Your Home's Water Lines in 1–2 Days

Get a clean, code-compliant Uponor PEX-A repipe led directly by Master Plumber Bill Clark.

Call (303) 472-0833 For a Free Estimate