24/7 Professional Boiler Specialists

Annual Boiler Service and Servicing

At Boilergurus, we specialise in Gas Safe Annual boiler servicing, hot water cylinder servicing, Underfloor heating servicing, maintenance and repairs in Wimbledon, Kingston, Guildford, Woking, Epsom & WeybridgeWhether you are looking to service your boiler, unvented hot water cylinder, underfloor heating or radiators or require a Landlord Gas Safety Certificate, our engineers are Gas Safe Registered, G3 qualified and trained electricians, so can help with any boiler, central heating, hot water, underfloor heating, thermostat and complex smart systems servicing and repairs.

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    Annual Boiler Service

    • A professional boiler health check – typically completed in 30–45 minutes.
    • Our standard service includes:
    • Full safety inspection of your boiler and heating controls
    • Open the boiler to check internal components
    • Identify visible corrosion and leaks
    • Clean the magnetic system filter and condensate trap
    • Conduct flue gas and combustion analysis using a Gas Analyser on both the inlet and outlet
    • Provide a Gas Safe digital service report with before & after photos and all test results (approx. 8 pages)

    Recommended annually to ensure safety, reliability, and efficiency.

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    Boilergurus Service Car with Owner

    Premium Annual Boiler Service (Full Strip-Down)

    Our gold-standard maintenance takes approximately 60 minutes for a deep clean and full inspection.

    Includes everything in the Annual Service, plus:

    • Full strip-down inspection of key components
    • Detailed checks for corrosion, gasket wear, and pressure relief valve issues
    • Remove soot build-up from burner and chamber (like a fireplace – if not cleaned, soot hardens)
    • Thorough clean of the main heat exchanger – responsible for heating of the entire boiler – a critical part costing £850+ to replace if becomes blocked beyond repair
    • Clean out sump
    • Remove and clean out electrodes (responsible for ignition and maintaining a stable flame)
    • Physically check the flue for integrity and leaks
    • Receive an in-depth Gas Safe digital report (approx. 20 pages), including identifying visible leaking parts, water damage and corrosion, test results, and photographic evidence with before and after photos

    Ideal for customers wanting maximum performance or servicing older or high-demand boilers.

    Landlord Gas Safety Certificate (CP12)

    Legally required for landlords. Optional but recommended for owner-occupiers.
    Commonly referred to as the CP12, this certificate confirms that your rental property’s gas installation and appliances are safe and compliant. This certification includes:

    • Inspection of all other gas appliances (e.g., hobs, fires – boiler excluded)
    • Gas Tightness test at the gas meter with manometer to detect any gas leaks
    • Check for carbon monoxide alarms, confirm they’re installed in the correct locations and functioning
    • Issuance of your official Landlord Gas Safety Certificate (CP12)

    The certificate can be booked on its own, or as a discounted add-on to either boiler service for convenience and cost-effectiveness.

    Complete Heating System Upgrades

    As part of boiler installation and replacement, we also provide:

    • Full heating system upgrades, including radiators and pipework
    • Installation of thermostats and zoning controls
    • Underfloor heating installations, repairs, and smart control setup

    Underfloor Heating Servicing

    Prevent breakdowns and keep your system running efficiently with routine servicing.

    Our underfloor heating servicing includes:

    • Jetting and flushing pipework to remove sludge, air, and debris.
    • Manifold and flow meter cleaning to restore balanced flow.
    • Checking external manifold controls – motorised valve, underfloor heating pump, wiring centre, blending valve
    • Thermostat testing and calibration.
    • Leak detection and repair of manifolds, pipes, and valves.

    Regular servicing helps to reduce energy bills, extend lifespan, and ensure consistent heat delivery throughout your home.

    Why Choose Boilergurus?

    Gas Safe Registered Engineers with 18 years of experience with G3 Unvented certified engineers
    Transparent: Every job includes before & after photo evidence
    All work documented in professional digital reports
    Proactive: We flag any issues before they become costly
    Reliable, professional, and highly rated by homeowners and landlords alike
    Book your Annual Boiler Service in Wimbledon, Kingston, Guildford, Woking, Epsom & Weybridge