Terry Matthews

What’s Inside a Boiler? - Part 2: Pressure Relief Valve If your boiler pressure keeps dropping, you keep topping it up, or you have water dripping outside from a copper pipe, the PRV is one of the key things to check properly. It is a safety device designed to protect your boiler and heating system from dangerous pressure levels, but once it has opened, it can sometimes fail to seal again. In this guide I’ll explain what the PRV does, why it activates, why it can start leaking, what symptoms...

A boiler service is not a magic wand . It’s not a fault call out, and it’s not automatically carried out because something is broken. A boiler service is a planned, preventative process  designed to check that your boiler is operating safely and within the correct parameters. As heating engineers, our primary responsibility during a boiler service is safety first , followed by monitoring how the boiler is currently operating and spotting early warning signs before they turn into breakdowns....

What’s Inside a Boiler? Series - By Terry Matthews Part 1: Expansion Vessel If your boiler pressure keeps dropping, swings up when the heating is on, or you’ve noticed water dripping from the copper pipe outside, the expansion vessel is one of the first things to suspect. It is a really common cause of pressure issues in combi and system boilers, and if it is left, it can trigger the PRV and put strain on other components. This guide explains what the expansion vessel is, what is inside it,...