Boiler Servicing & Replacement in London
Have your boiler checked, fixed or replaced professionally
Vaillant Book Your Boiler Replacement in 4 Simple Steps
Make an online booking for a gas boiler survey.
A gas engineer visits for inspection.
Receive a detailed quote for labour and materials within 48h.
Our expert returns to replace and test your new boiler.
Choosing the Right Boiler for Your Property
Combi Boilers
Highly efficient and space-saving. No separate tank needed, providing hot water on demand with high pressure. Perfect for smaller homes.
System Boilers
Requires a hot water cylinder but no loft tank. Built-in components allow for quicker installation and consistent water flow to multiple taps.
Regular Boilers
Traditional ‘heat only’ boilers using both a tank and cylinder. Best for large households where hot water is needed from multiple taps simultaneously.
Electric vs. Gas Boilers
Legal Warning: According to UK legislation, only Gas Safe certified fitters are allowed to install or service boilers. DIY installation will void your warranty and invalidate your home insurance.Servicing vs replacement, decided properly
Not every boiler fault means a new boiler. An annual service catches minor issues, such as a failing part or a pressure drop, before they turn into a breakdown, and often adds years to a boiler’s working life for a fraction of the cost of replacement. Our gas engineers inspect, clean and test your system properly, not just a quick visual check.
When replacement genuinely is the better option, whether due to age, repeated faults, or poor efficiency, we help you choose the right combi, system or regular boiler for your home’s hot water demand and pipework, then handle the full installation, testing and certification.
| APPOINTMENTS | MONDAY – FRIDAY | SATURDAY | SUNDAY | |
|---|---|---|---|---|
| 8 AM – 6 PM | 6 PM – 10 PM | 8 AM – 6 PM | 8 AM – 6 PM | |
| Standard Price – First Hour | £102Business: £85 + VAT | £105.60Business: £88 + VAT | £105.60Business: £88 + VAT | £117.60Business: £98 + VAT |
| Standard Price – Subsequent Half Hours | £50.40Business: £42 + VAT | £54Business: £45 + VAT | £60Business: £50 + VAT | £62.40Business: £52 + VAT |
| Standard Price – Daily Rate | £594Business: £495 + VAT | — | — | — |
Prices include VAT at 20%. Offices and companies: the business rate is shown + VAT.
If you need an electric cooker, oven, hob or hood repair service, we can help you with this, too.
What to Expect from Your Boiler Servicing
A thorough inspection to identify external faults, corrosion, or signs of distress in the boiler unit.
Testing the boiler while in operation to ensure the gas flow and pressure are at optimal levels.
Removing the casing to carefully check the burner, main heat exchanger, and internal safety seals.
Using a flue gas analyser to verify that the combustion process is safe and within legal efficiency limits.
Final rigorous safety tests to ensure there are no gas leaks within the boiler or connected pipework.
Service Report: You will receive a full report of all findings. If any issues are found, our engineer will provide a quote for repairs or replacement on the spot.Frequently Asked Questions
Our gas boiler service in London is available to all properties located within the M25 zone.
All issues identified during the service will be listed in a comprehensive report. We will provide you with a detailed quote for fixing each separate problem found.
To ensure family safety, have gas appliances professionally checked at least once a year. Smoke alarms are mandatory, and you must ensure air vents, chimneys, and flues remain clear and unblocked.
Check for dark stains around appliances. Most importantly, examine the pilot light: it should be blue. If the flame is yellow, you likely have a leak.
For tenants, the landlord is legally responsible for:
Arranging professional repairs by our gas engineers.
Mandatory annual safety checks.
Providing you with a copy of all safety check records.
Yes, we provide Boiler Power Flushing. This is highly recommended if you notice cold spots on radiators, system inefficiency, or if your boiler is making unusual “kettle” noises.
Need help today?
Urgent repairs in London
Call-outs seven days a week at the published hourly rate. These pages explain what to do first and what the visit costs.
Why Plumbery
Qualified, insured and upfront about price
Every engineer we send is registered or qualified for the trade they work in, and you can check the details before anyone starts.
- Fully insuredEvery job is covered by our insurance.
- Rates published in advanceOur hourly rates are on the pricing page. Nothing starts until you agree the rate.
- Paperwork includedGas safety certificates and electrical records are provided on completion.
- Registered companyPlumbery Ltd, company no. 11677583, registered in England and Wales.
Water heaters installation
Hot water cylinder installation London
Home thermostat replacement
Radiator installation and repair
Radiator valves replacement and installation
Central heating & boiler power flushing
Gas safety certificates