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Author Messages Oldest First Newest First wnbrandt Registered Users Posts:7 12/28/2007 1:28 PM   I currently have my ground loop transition to copper which runs to the heat pump and circ pumps. I want to reconfigure the piping a little and was wondering if PVC or CPVC would work ILO the copper. I am certain it can handle the heat my concern is the cold. I can't seem to find any info on how cold you can run water through it. Any one used a material other than copper? thanks Bill TechGromit Registered Users Posts:164 12/28/2007 3:21 PM   All of my piping for my geothermal system is PVC pipe with the exception of the copper piping inside the Geothermal unit itself.
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