Boiler service — London
Annual boiler service in London
Gas Safe registered engineers carrying out annual boiler services across all London boroughs. All boiler brands. Combined gas safety certificate and boiler service available for landlords — one visit, both records issued same day.
What is included
What a London boiler service includes
Burner and heat exchanger clean
Remove and clean the burner, check for cracks or corrosion, and clean the heat exchanger of any scale or debris.
Combustion efficiency test
Flue gas analysis to verify the boiler is burning gas efficiently and safely. Poor combustion indicates a fault requiring repair.
Condensate trap and pipe check
Clean the condensate trap and verify the condensate pipe is unobstructed and draining correctly — particularly important for London winters.
Safety device testing
Test the overheat thermostat, pressure relief valve, and flame failure device to confirm they operate within manufacturer tolerances.
Pump and pressure check
Verify pump operation, system pressure, and expansion vessel condition. Top up central heating inhibitor to prevent corrosion and sludge build-up.
Service record issue
Service recorded in the boiler service book and confirmation letter issued. Required to maintain manufacturer warranty.
London landlords
Combine boiler service + gas safety certificate
Save on separate call-out charges by combining the annual boiler service with your mandatory gas safety certificate (CP12). One visit, two records issued same day. Available across all London boroughs.
Book combined visitCommon questions
Boiler service London: frequently asked
How much does an annual boiler service cost in London?
An annual boiler service in London costs £80–£140 depending on the boiler brand and your location. Combining the service with an annual gas safety certificate (required by law for landlords) typically costs £100–£180 for the combined visit — saving on separate call-out charges.
Is an annual boiler service required by law in London?
No — an annual boiler service is not a statutory legal requirement for landlords or homeowners. However, most boiler manufacturers require annual service as a condition of the warranty. For London landlords, a service record demonstrates due diligence and is required to maintain most boiler warranties.
What does an annual boiler service include in London?
A full annual boiler service includes: cleaning the burner and heat exchanger, checking and cleaning the condensate trap, testing combustion efficiency and flue gas analysis, checking gas pressure and tightness, inspecting and testing all safety devices, checking the pump and system pressure, topping up central heating inhibitor, and recording the service in the boiler service book.
Can I combine a boiler service with a gas safety certificate in London?
Yes — combining the annual boiler service with the gas safety certificate (CP12) in a single visit is the most cost-effective approach for London landlords. One call-out charge covers both. The service ensures the boiler will pass the gas safety inspection, and both records are issued on the same day.