Heating On But Radiators Cold
17 September 2026 | Leyton Boilers
Check thermostats, timers, and boiler pressure first. If the boiler runs but radiators stay cold, the circulation pump or motorised valves may have failed.
Partial heating suggests balancing or sludge issues rather than total pump failure.
We restore even heat distribution through repairs, balancing, or flushing as required.
Need professional help?
Leyton Boilers provides Gas Safe registered boiler servicing, repairs, and installations across London.
07429 031 444 Contact us