PEX tubing is tough, flexible, long-lasting, and maintenance-free and the lowest priced tubing useable for Radiant Heating Systems. PEX is easy to transport, won’t corrode, and withstands continuous temperatures to 180°F.

PEX tubing is made from extruded polyethylene plastic similar to plastic drinking water bottles. The polyethylene polymer is then subjected to a process called cross-linking where it is stabilized against break down. The cross-linking is what makes PEX tubing so ideal as a building product. It makes the plastic long-lasting and durable yet retains it's flexibility.

Barrier vs. Non-Barrier: The polyethylene molecules in PEX tubing are spaced far enough apart that oxygen (O²) molecules can pass though the tubing while keeping water (H²O) inside. It is believed that this characteristic of PEX tubing will cause cast iron (ferrous) components in your heating system to pre-maturely fail due to corrosion. Tubing manufactures coat the PEX tubing with an EVOH oxygen barrier to protect the ferrous components in your heating system

Pexheat.com will help you determine which tubing will best meet your needs.