Expert Advice & News

Thinking of moving your boiler? Learn where it can go, what makes a move simple or involved, and the paperwork you should get afterwards.

Choosing a new boiler can feel complicated. Compare combi, system and regular models by hot water demand, home layout, pressure and pipework.

Hot water but cold radiators? A faulty diverter valve could be stopping your combi boiler from switching modes correctly.

Boiler pressure in the red and no heating? Follow this clear, step-by-step guide to safely repressurise your boiler using the filling loop, plus key warnings and fixes.

Cold patches on radiators, endless bleeding and a noisy boiler can all point to sludge. Learn what a power flush is, when it helps, and what else to try first.

Vaillant flashing an error code and no idea what it means? Get a clear, homeowner‑friendly guide to the most common codes and what to do next.