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Planned work · London · from £89 fixed

Annual Boiler Service in London

A £89 service is the cheapest thing on our rate card and prevents the most expensive things on it.

Annual boiler service in London
No call-out feeNo night or weekend surchargeFixed price before we start12-month workmanship guarantee

Flue analysis, combustion check, seals, condensate, filter clean, forty-five minutes that keeps the warranty alive.

What you get

Annual boiler service in London: what the price includes

  • 01
    Full combustion analysis

    Flue gas readings printed and kept, the objective health check, not a visual once-over.

  • 02
    Warranty protection

    Manufacturer warranties require annual servicing; miss a year and a £2,000 claim can be refused.

  • 03
    The small parts checked

    Condensate trap cleaned, magnetic filter emptied, pressure and expansion vessel checked and corrected.

  • 04
    Reminders handled

    We track the anniversary and remind you, most lapsed warranties die of forgetfulness, not choice.

  • 05
    A service is not the same as a safety check

    A CP12 confirms an appliance is safe today. A service cleans the burner and heat exchanger, checks the seals and combustion figures, and is what actually extends the life of the boiler and keeps the manufacturer warranty valid. Plenty of people pay for one believing they bought the other.

What this means in London

Local conditions we work around

Hard water is the defining fact for London heating. At 280 to 320 ppm, scale builds on the hottest surface in the system, which is the boiler heat exchanger, and every millimetre of it costs efficiency and shortens the life of the unit. It is why we flush before commissioning a new boiler, why we fit a scale reducer on the mains where the system warrants it, and why an unvented cylinder in London needs its annual service rather more than the manual implies.

Where we do this in London

Covered across London

Same published rate card and the same twelve-month workmanship guarantee everywhere below, there is no postcode loading. Each area has its own page with an arrival time taken from our job records rather than chosen for a website.

Straight answers

Annual boiler service in London, your questions

Is an annual service really necessary?
Three reasons: warranty validity, carbon monoxide safety, and catching the £30 part before it becomes the £400 breakdown. It's the strongest value-for-money on this site.
What's included for £89?
Combustion analysis, flue integrity, seals and gaskets, condensate clean, filter clean, pressure correction and a written record. If something needs replacing, it's quoted separately before we do it.
Do you service rentals with certificates?
Yes, combine the service with the landlord gas safety certificate (CP12) in one visit and one discount. See the landlord certificate page.
Does servicing really keep the warranty valid?
Yes, and it is the most common reason a warranty claim gets refused. Nearly every manufacturer requires an annual service recorded in the benchmark book. One missed year can cost you a free heat exchanger.
What do you actually do?
Case off, burner and heat exchanger cleaned, condensate trap cleared, seals inspected, gas pressure and combustion analysed with a calibrated analyser, flue integrity checked, and the readings recorded. If someone is in and out in fifteen minutes without a flue gas analyser, you did not have a service.
When is the best time to book?
Late summer or early autumn. Everyone books in October when the heating goes on and the first fault appears, so a September service is both easier to schedule and rather more useful than a January one.
How does London hard water affect heating work?
Considerably. Scale builds on the hottest surface in the system, which is the boiler heat exchanger, and every millimetre costs efficiency and life. It is why we flush before commissioning a new boiler here, why kettling is the most common noise complaint we get in London, and why an unvented cylinder in this city genuinely needs its annual service rather than nominally needing it.
24 hours · 365 days · London

Water where it
shouldn't be? Call.

A person answers, not a menu. You'll have an arrival time and a price range before you hang up.

020 3674 8514

Or WhatsApp 07865 292684, photos help us bring the right parts

Our engineers