Customer stated: there was a knocking at the water heater upon further inspection found the water pressure to be 75 psi and the noise coming form the expansion tank And they water heater was from 2017 Gave customer prices to replace the heater With tankless options and tank type and to replace the Prv and two other valves and install one on the water heater where there was not one Customer is going to talk with husband and make a decision on which option they are going to go with Water heater is located in garage in machine room Complete Easements ready to send