PEX Tubing comes in many different sizes. The correct size to use for a given radiant heat or PEX plumbing application may vary from project to project. However, the standard for Radiant Heat loops and PEX plumbing is 1/2" PEX Tubing, and for supply and return lines is 3/4" PEX Tubing. PEX Tubing also comes in 5/8" which can be used for longer (330') Radiant heat loops. 3/8" PEX Tubing is made for some plumbing applications, and 1" PEX Tubing may also be used for Supply lines.
This blog is sponsored by www.supplyhouse.com, the online leader in PEX Tubing.