Customer called in about pipes rattling. Upon arrival, customer stated that when she flushes the toilet, pipes vibrate in the basement. Checked PRV and water pressure at 55psi. Had customer run water and confirmed that PRV went bad and needs to be replaced. Also noticed water heater leaking from T&P valve. Checked expansion tank and it failed. Water heater from 2014. Gave customer several options. Customer wants some time to think over to which option she wants to go with.