I currently have old style, cast iron hot water radiators and would like to install PEX, in-floor heating in my kitchen. I have access to the joists from below so installation is easy. In my crawl space there is a main trunk line with copper branch lines feeding the existing rads. Can I simply attach the PEX to these branch lines and run it between the joists? I'm talking about roughly a 350 square foot area. Is there any difference in running the hot water through in-floor PEX pipe as opposed to the cast iron rads?
I'd appreciate any help.
I'd appreciate any help.