Price is to replace Prv to correct the pressure in the home. Will hook up washing machine water supplies as a courtesy if done in conjunction with the Prv. Made customer aware that the washing machine hose hookup isn’t covered by any kind of warranty for customer supplied hoses. Customer needed hoses hooked up to new washing machine for the water supply lines. Checked house pressure over 100 psi. Replaced the pressure regulating valve and installed customer provided washing machine hoses as a courtesy. Zip tied the drain to the water line to secure it. Tested all work to ensure proper function and no leaks, none were found. Initially recommended servicing the tankless. But it is over 10 years old with no service history. Flushing is ill advised.