Annual Boiler Service

  • Annual Boiler Service

Annual Boiler Service in London

  • Prices start from £95 + Vat
  • A Fixed Price
  • Accurate diagnosis
  • Which? Trusted trader
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Is an Annual Boiler Service Necessary?

Absolutely. Whether you’re a homeowner or a landlord, keeping your boiler in good condition is essential, especially during the colder months when you rely on it most. For properties with newer heating systems, we also provide a dedicated heat pump service, helping your renewable heating run efficiently alongside your boiler.

An annual service helps catch potential issues early, helps prevent unexpected breakdowns, and keeps your home warm and comfortable. It also ensures your system is running safely and efficiently.
Plus, regular servicing may be required to maintain boiler insurance coverage.

Common Signs of a Faulty Gas Boiler – Don't Ignore Them!

If your gas, electric, or combi boiler isn’t heating properly or only produces lukewarm water, it could be a sign of an underlying issue. However, many common problems like unusual flame colour, fluctuating pressure, or persistent heating can often be prevented with regular maintenance.

If your boiler is already showing signs of malfunction, it may require professional attention. A Gas Safe registered engineer can detect early signs of wear and tear like leaking pipes, thermostat issues, or even carbon monoxide risks during a annual boiler service.

Book your annual boiler service today with Serviceteam and ensure your heating system runs safely, efficiently, and cost-effectively. Your comfort and safety depend on it.

Boiler Service Costs vs Annual Cover – Which is Best?

A one-off boiler service typically costs around £80–£90 + VAT. Regular servicing is required to maintain the validity of your boiler’s warranty and prevent future repair costs.

Boiler insurance plans cover breakdowns and parts but come at a higher cost, around £297 per year on average. For many, pay-as-you-go servicing offers a more affordable and flexible option, allowing you to control maintenance costs without paying for unnecessary coverage.

What to Expect from an Annual Boiler Service?

An annual boiler service is important for safety, efficiency, and peace of mind. During the service, a qualified gas engineer will:

  • Check the boiler flame and combustion using a flue gas analyser.
  • Inspect internal and external flues for blockages.
  • Test for carbon monoxide (CO) presence
  • Assess boiler pressure and perform a full gas tightness test.
  • Remove the boiler cover to inspect and clean all key components.
  • Test safety devices and check casing seals.
  • Run a full boiler performance test.
  • Provide a detailed service report.

Once complete, the engineer will restart your boiler to ensure it operates correctly.

Book online for a discounted rate, or call our team for expert guidance. For more information on one-off boiler services and UK safety certificate requirements for landlords and homeowners, visit our blog.

Boiler Guarantees & Warranties: What to Expect from Top Brands in London

Regular boiler servicing helps improve efficiency, reduce energy bills, and ensure safety by preventing carbon monoxide risks. Top boiler brands in London offer strong warranties for peace of mind.

  • Worcester Bosch provides extended warranties when installed by an accredited installer, covering additional components like Greenstar Filters.
  • Baxi offers solid coverage with refundable deposits for engineer visits if the issue is boiler-related.
  • Vaillant extends warranties when installed by a certified Advanced Installer, but add-on products are not covered.
  • Viessmann covers both boiler and some related issues when installed by a trained professional, ensuring reliable aftercare.

Pro tip: Maintain proper servicing records and follow your warranty provider’s conditions to enjoy uninterrupted coverage and long-term savings.

Best Time to Book Your Annual Boiler Service

For optimal performance and peace of mind, schedule your boiler service in summer or early autumn before demand rises in winter. Early booking means better prices, quicker appointments, and early fault detection.

Our Gas Safe engineers ensure your combi, gas, electric, or smart boiler runs safely and efficiently all year. Check our Trustpilot and Checkatrade reviews to see what customers say.

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What's included in this service?

  • Annual servicing of your gas or electric boiler is essential to keep it in peak condition.
  • Your gas boiler is checked for any CO leakage or flue obstructions, together with the gas pressure, seals, flame colour, leaks, and heating controls. Every check will contribute to your boiler running efficiency and safely.
  • If you have an electric boiler (more costly to run than gas) it’s just as important to check it’s performing safely and in a cost effective way.
  • Tap into our engineers’ expertise without being tied down to an annual contract.

What will it cost:

We charge a fixed price starting from £95 + Vat when pre-booked online.
Why not add one of the following products at a discounted rate when booked with an annual boiler service.

Gas Safety Certificate Add £45 + Vat

Smoke alarm Add £45 + Vat

CO alarm Add £45 + Vat

What's not included in this service?

  • It’s not a boiler breakdown visit, that’s a different service. If your appliance is not working you will first need to book a breakdown visit. The boiler must be in working order to be able to complete the testing or any other checks.
  • Any congestion charge or parking charges? This will be added at cost to the final bill (unless a paring permit for the duration of the visit is provided).

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Our Pricing

Standard Price
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£105
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£95
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£80
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Frequently Asked Questions

Q: How Long Does a Boiler Service Take?

A typical boiler service takes 30 to 60 minutes, depending on the make and model, such as Worcester Bosch, Vaillant, Baxi, or Viessmann. Always find a gas heating engineer for a thorough check. After the gas boiler service, you’ll receive a clean bill of health or recommendations if any issues are found.

Q: Is Boiler Insurance Necessary?

Boiler insurance isn’t legally required, but it provides peace of mind for homeowners and landlords. With plans from top brands like Worcester Bosch and Baxi, you get 24/7 engineer access, parts and labour coverage, and reliable customer service. Weigh the costs and benefits to decide if it’s right for you. Boiler insurance helps you avoid unexpected repair bills and ensures year-round comfort.

Q: Do All Types of Boilers Need Annual Servicing?

Yes, all types of boilers, including gas, combi, electric, and smart boilers, require annual servicing, regardless of the brand (Worcester Bosch, Viessmann, Baxi, Vaillant, etc.). Regular servicing ensures your boiler runs safely and efficiently and helps prevent costly breakdowns. It’s not just about fixing issues; maintenance extends your boiler’s lifespan and keeps your home heating reliable year-round.

Q: What’s Involved in Fitting a New Boiler?

A Gas Safe registered engineer will remove your old boiler and install the new one, either in the same or a new location. We’ll protect your home with carpet protectors and dust sheets. After cleaning the system and flushing out any residue, we may perform a chemical or power flush. Lastly, we’ll reconfigure the pipes to ensure proper connections and efficient heat distribution.

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