Radio Flyer
Member
I have water baseboard heat, and the wife has had enough of the PEX in the second-story floors popping and ticking as it expands each time there's a call for heat. We’re planning for new carpet, so I think I’ll bite the bullet and replace all the PEX with PEX-AL-PEX by cutting access channels in the subfloor. Hoping I won’t regret this. Any advice is appreciated.
The end of each baseboard radiator is connected with a sweated elbow and a crimped-on 10-inch vertical section of non-oxygen barrier PEX. (The tubing below the floors is oxygen barrier, which is what I’m planning to replace with PEX-AL-PEX.) So in a total run of 200 ft., about 12 ft. is currently non-oxygen barrier.
Question: Do I need to replace those short pieces to avoid oxygen in the system, or will that little amount not matter? If I need to replace it, I would want to use a short section of standard oxygen barrier PEX to avoid sweating on new fittings, right? I would then connect to the PEX-AL-PEX below the floor with compression (PEX-AL-PEX side) and clamped barb fittings (PEX side). Thanks!
The end of each baseboard radiator is connected with a sweated elbow and a crimped-on 10-inch vertical section of non-oxygen barrier PEX. (The tubing below the floors is oxygen barrier, which is what I’m planning to replace with PEX-AL-PEX.) So in a total run of 200 ft., about 12 ft. is currently non-oxygen barrier.
Question: Do I need to replace those short pieces to avoid oxygen in the system, or will that little amount not matter? If I need to replace it, I would want to use a short section of standard oxygen barrier PEX to avoid sweating on new fittings, right? I would then connect to the PEX-AL-PEX below the floor with compression (PEX-AL-PEX side) and clamped barb fittings (PEX side). Thanks!