About Uponor
Uponor was founded in 1936 in Finland with a single focus: engineering water delivery systems that contractors can rely on and buildings can be built around. That focus hasn't changed.
Our Heritage
Uponor is established in Nastola, Finland, manufacturing copper tubing for Nordic building systems.
Uponor introduces one of the world's first commercial PEX piping systems for district heating applications, establishing technical leadership in crosslinked polyethylene.
Entry into the North American market with AquaPEX PEX-a tubing and ProPEX expansion technology — a connection method that would set the industry standard.
Launch of integrated radiant heating system packages with engineered manifolds, thermostats, and controls — making whole-system design support standard practice.
Uponor operates in 30+ countries, with manufacturing facilities in North America, Europe, and Asia supporting construction professionals on every inhabited continent.
Third-Party Certifications
Uponor does not self-certify. Every performance claim on our products is backed by accredited third-party testing and certification from recognized industry authorities. Our philosophy: no claim without evidence.
All AquaPEX tubing and ProPEX brass fittings in contact with potable water are certified to NSF/ANSI 61, the standard for chemical extraction and toxicity in drinking water systems.
Certified by NSF International, Ann Arbor, MIDimensional and pressure-rated conformance for all PEX-a tubing grades, verified against ASTM F876 and F877 performance standards.
Listed by NSF InternationalUponor AquaPEX and ProPEX system components are listed by IAPMO for use under both the Uniform Plumbing Code and International Plumbing Code — accepted in all 50 US states and Canadian provinces.
IAPMO R&T, Ontario, CAUponor holds active ICC-ES evaluation reports confirming code compliance, providing architects and engineers with the documentation needed for building permit submittals.
ICC Evaluation Service, LLCWhy Uponor
The expansion connection creates a joint stronger than the pipe itself. No torque variation, no positioning error — just a mechanically superior connection every time.
Licensed professional engineers on Uponor's team provide complimentary system design — radiant layouts, manifold schedules, thermal calculations — for qualifying projects.
Uponor's 25-year limited warranty on AquaPEX tubing — when installed as a complete Uponor system — is among the strongest in the PEX piping category.
Operating in 30+ countries with regional technical support teams, Uponor combines global manufacturing scale with local application engineering expertise.
Connect with a Uponor regional sales engineer or request complimentary system design assistance for your current project.