Boiler Repair in London
Fast boiler repairs by Gas Safe registered engineers across London. No heating or hot water? Get a same-day diagnosis and fix.
About Boiler Repair Services in London
A broken boiler in London — especially in winter — is an emergency. Our Gas Safe registered engineers provide rapid diagnosis and repair across all boroughs. Whether your boiler is showing an error code, leaking, making strange noises, or simply not firing up, we'll connect you with a qualified engineer who can fix it fast.
Popular Boiler Repair Services in London
Emergency Boiler Repair
Same-day callout for boiler breakdowns. Diagnosis, parts replacement, and testing.
Boiler Servicing
Annual service to maintain efficiency and warranty. Includes safety checks and cleaning.
Boiler Replacement
When repair isn't cost-effective. New boiler supply and installation with warranty.
Thermostat & Controls
Faulty thermostat replacement, programmer repairs, and smart control upgrades.
Pressure & Leak Fixes
Low pressure, leaking valves, expansion vessel replacement, and system re-pressurising.
Boiler Repair Price Guide — London 2026
| Service | Typical Price | Notes |
|---|---|---|
| Callout & diagnosis | £60–£100 | |
| Diverter valve replacement | £150–£250 | |
| Fan replacement | £200–£350 | |
| PCB replacement | £300–£500 | |
| Annual boiler service | £80–£120 | |
| New boiler (if unrepairable) | £1,800–£3,500 |
Local Insight
The most common boiler issues in London are low pressure (often caused by micro-leaks in old pipework), faulty diverter valves (no hot water but heating works), and ignition failures. A repair typically costs less than £350 — if your engineer quotes significantly more, it may be worth considering a replacement, especially if your boiler is over 10 years old.
Areas We Cover
- Central London (Westminster, City of London, Soho)
- North London (Islington, Camden, Hampstead, Finchley)
- South London (Brixton, Clapham, Dulwich, Greenwich)
- East London (Shoreditch, Hackney, Stratford, Canary Wharf)
- West London (Chelsea, Fulham, Ealing, Chiswick)
- South East (Lewisham, Bromley, Croydon)
- South West (Wandsworth, Richmond, Kingston)
Other Services in London
Explore other professional services available in London
Boiler Repair in London — FAQs
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