Boiler repair in London
Most boiler breakdowns come down to a handful of components — valves, pumps, sensors, PCBs. A Gas Safe verified engineer diagnoses from the fault code, names the exact part, and prices the repair before touching anything.
Request a verified professionalTypical London price: £150–£400 per repair
Sound familiar?
- Error code on the display
- No heating, no hot water, or one without the other
- Pressure dropping or rising repeatedly
- Kettling, banging or gurgling noises
- Pilot light or ignition failures
What your Hero will do
- 1Diagnose from the fault code, pressures and flue readings
- 2Quote the repair with the exact component named — approved before work starts
- 3Fit the part, test the boiler through a full cycle, and check safety devices
- 4Record the repair on your job's timeline for future reference
When to call
At the first repeated fault. Boilers that lock out more than once are telling you a component is failing — catching it early is the difference between a £200 repair and a mid-January breakdown.
Common questions
Should I repair or replace my boiler?
If it's under 10 years old, repair is almost always right. Over 10 years with a repair above roughly a third of replacement cost, ask for both prices — a newer boiler also cuts gas use noticeably.