Any thoughts on:
The TPR valve being stacked on top of the hot water outlet. Is this an acceptable configuration.
The purpose of copper tubing that installed in the original TPRV outlet. The tubing is insulated and loops down into the chase that the condensate line and refrigerant line exit the house to a heat pump. The HVAC equip is about 10 years newer than the water heater.
The air handler is just above the water heater (just out of the attached picture).