By plumbers for plumbers, good luck to everyone else!

The hypaflow (pressure expansion and control valve) packed up after two months. i did not know that it was specifically the hypaflow, nor that it has a guarantee, that can only be activated if you have the Advanced Valve plumbers come inspect and replace. A terrible business practice, unless you are a plumber and its your house or your neighbours, then good; for everyone else you will get a call out fee from your local plumber, pay and then have your plumber tell you, you should get Advanced Valve's plumber to replace their hypaflow. If this was a scenario where you only have one item in an uncomplicated system, then the business model works. the hypaflow is part of a larger, complex (geyser) system with many possible triggers. by plumbers for plumbers. i installed the rolls royce hypaflow PCB now, so i never had to deal with this outfit again.