potterton powermax

Hi all, My boiler is a Potterton Powermax 85 HE. It is quite a large, older boiler. The issue I’m having is that the shower water starts off very hot, but after around 10mins it becomes lukewarm. At that point, all the other hot taps in the property are also only lukewarm. When this happened...

Hi I have taken the plunge and bought a Google Nest 3rd Gen that will control both the heating and hot water. There is also a Honeywell thermostat but we tend to use the programmer as the thermostat is in a stupid place in the hallway which is freezing cold next to the door next to the radiator...