Diverter Valves Explained: Why They Fail and What Replacement Costs
Inside a combi boiler, the diverter valve sends hot water either to the heating circuit or to the domestic hot water taps,…
Read moreGuides, tips, and advice on boiler maintenance, fault diagnosis, and home heating from the Boiler & Spares team.
Inside a combi boiler, the diverter valve sends hot water either to the heating circuit or to the domestic hot water taps,…
Read moreA plumbing maintenance checklist reduces the risk of leaks, blockages, and costly water damage. In the United Kingdom, the average household uses…
Read moreGas boilers heat millions of UK homes, but faulty combustion can release carbon monoxide (CO), an odourless gas that can kill within…
Read moreA radiator that stays cold or only warms at the bottom usually points to trapped air, poor system balance, or a boiler…
Read moreSlow drains often start with a small restriction that worsens over weeks, increasing the risk of odours, leaks, and water damage. Hair,…
Read moreThis complete guide to boiler and plumbing explains how domestic heating and water systems work, what typically fails, and how to respond…
Read moreHard water carries high levels of dissolved minerals, mainly calcium and magnesium. As water flows through pipework and appliances, these minerals can…
Read moreHeating controls have changed from simple dials and timers to connected smart thermostats with app control and automation. Each option promises comfort…
Read moreBoiler faults often appear without warning, yet many follow familiar patterns. To identify the issues homeowners face most often, we asked 15…
Read moreChoosing between a boiler and a heat pump affects comfort, running costs, and carbon emissions. Boilers burn gas or oil to heat…
Read moreAccess technical fault data, wiring diagrams, and parts lists. Free for verified Gas Safe engineers.