Search results

How do I flush the system? What is an inhibitor? How will doing these things help the problem? (sorry for all the questions!)

I think it's only when the hot water is used.

Hi, Our combi boiler has started making a screaming noise when the hot water is run. It screams and drones until it switches off. The boiler is a 1988 Worcester Highflow 3.5 combi boiler. We have only just moved into the house so not sure about service history etc. (there is a recent...