Every radiant heat system needs to be pressure tested before, during, and after you lay out your PEX tubing. When performing a pressure test, you should set the system to 60 psi. In standard heating system operation, you will never go much above 30 psi, but it is good to test at a higher psi so that you are prepared for all worst case scenarios.
PEX Tubing for radiant heat and other radiant heat supplies can be found at www.supplyhouse.com
