Annual Boiler Service London

An annual service is the single most effective way to protect your boiler's warranty, keep it running efficiently, and catch small faults before they become breakdowns in the middle of winter. We book services across every London borough, carried out by fully Gas Safe registered engineers.

Book a service See pricing

The visit follows a consistent checklist every time: a full inspection of the boiler's internal components, a check of the flue and ventilation, a combustion analysis, and a test of the safety devices that shut the boiler down if something is wrong. You get a written record at the end, which most manufacturers require to keep a warranty valid.

Booking is straightforward — pick a convenient day, and we'll confirm an appointment window rather than an all-day wait-in slot wherever possible. If the engineer finds a fault during the service, they'll explain it clearly and quote any follow-up work separately before doing anything beyond the standard service.

Servicing is quoted individually rather than sold on a fixed rate card — boiler make, model and access all affect the visit. See our pricing page for typical UK market ranges, or book a service plan for a fixed annual cost.

What you get

Fully Gas Safe registered engineers on every visit, working to the manufacturer's service checklist.
Full internal inspection: heat exchanger, seals, ignition, and flue and ventilation checks.
Combustion analysis to confirm the boiler is burning efficiently and safely.
Safety device testing, including the components that shut the boiler down if a fault develops.
Written service record provided at the end of the visit — the paperwork most warranties require.
Available as a one-off booking or as part of an ongoing service plan (see Service Plans).

How it works

A method, not a guess

Book Your Slot

Choose a date that suits you. We confirm a realistic appointment window and what to expect from the visit.

Full Boiler Inspection

The engineer works through the manufacturer's checklist: internal components, seals, ignition, flue, ventilation and combustion.

Safety & Efficiency Checks

Safety devices are tested and combustion is analysed, confirming the boiler is running safely and not wasting fuel.

Written Record & Advice

You receive a written service record. If anything needs attention, it's explained plainly with a separate quote — never bundled into the service cost.

Questions

Annual Boiler Service FAQs for London homeowners

How often should a boiler be serviced?

Once a year, in almost all cases — this is the standard manufacturer recommendation and the usual condition attached to a boiler warranty. Servicing annually, ideally before the heating season starts, is the best way to avoid an unplanned breakdown in winter.

What does an annual boiler service actually check?

The engineer inspects the boiler's internal components, checks the flue and ventilation, runs a combustion analysis, and tests the safety devices that shut the boiler down if a fault develops. You get a written record of what was checked and any issues found.

Will a service void my warranty if I skip a year?

Most manufacturers require an unbroken annual service record to keep the warranty valid — a missed year can be enough to invalidate a claim later. Keeping the written record from every visit is worth doing for this reason alone.

Do you service any make of boiler?

Our engineers service the boiler brands most commonly installed in London homes. Tell us the make and model when you book so the right parts and checklist are ready if anything needs attention.

Can I book a service and a Gas Safety Certificate together?

Yes — if you're a landlord, we can carry out the annual service and the Landlord Gas Safety Certificate (CP12) inspection in the same visit, which saves a second call-out.

Explore the cluster