The Heck’s had us out do to a leaking T&P valve. Valve was hot and whole house pressure was at 88psi. Also expansion tank was blown. We decided to replace existing PRV and expansion tank. Along with leaking t&p, the Heck’s had a water softener not in use because of split pvc adapter. Replaced pvc adapters with brass reducing couplings and pex’d back in. All problems solved and house is now sitting at a static 75 psi.