I have low hot water pressure through the whole house. Water heater is 10 years old and pvc piping. You recommended check/change heat trap nipple. How do I do that. Thanks

Heat trap nipples are the fittings that are connected to the cold water inlet and the hot water outlet. Replace with 3/4 X 4" brass nipples. Don't forget to Teflon Tape the threads. Good luck, om