Any code requirements, or advantage/disadvantage on the type of pipe used for the water heater TP discharge? My old heater used PVC and that’s what I used on the new heater. I’ve also seen copper used, mostly in new homes, I guess because the length of copper pipe was available.

Here in Kentucky, the code requires either copper, cpvc, or galvanized piping.

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Originally Posted by shader

Any code requirements, or advantage/disadvantage on the type of pipe used for the water heater TP discharge? My old heater used PVC and that’s what I used on the new heater. I’ve also seen copper used, mostly in new homes, I guess because the length of copper pipe was available.

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I use CPVC because it is considerably cheaper materially and more quick to install than copper.