Guide
When central heating is not working, start with thermostat demand, timer schedules, and whether the boiler shows a fault code or pressure outside the normal range.
Check if radiators are cold throughout the property or only in certain rooms, as this helps distinguish circulation issues from boiler faults.
Low boiler pressure, frozen condensate pipes in winter, and stuck motorised valves are common causes that need proper diagnosis rather than repeated resets.
If you have no hot water as well as no heating, the fault may sit at the boiler, diverter valve, or controls rather than individual radiators.
A Gas Safe heating engineer can test ignition, pump performance, and system flow safely to restore reliable heat.
Early professional repair reduces the risk of secondary damage and repeat breakdowns during peak winter demand.

