



I have a slight leak issue with my combi boiler. I have noticed that there seems to be some water leaking from the bottom of my boiler, when I removed the cover just to see if I could spot the source I noticed there wasn’t really anything obvious until I accessed behind the controls. Looking at the manual of the boiler it appears to be the 3 way valve and what could be the o-ring inside breaking down. I’ve attached some photos to show what I have found. I have an engineer coming out but I wanted to just get some advice and idea of what this may cost?