Annual boiler service with flue gas analyser on a Baxi boiler, Ashford, Surrey
Boiler Service

Annual Boiler Servicein Ashford, Surreyprotecting your warranty

A full manufacturer-specification service by a Gas Safe engineer, every check documented, flue gases analysed, and a written report you can hand to the manufacturer or letting agent without a query.

Fixed price · Warranty-honouring · 267+ five-star reviews

24 yrs
Trade experience
Gas Safe
Reg. 574509
£2m
Public liability
2 yrs
Workmanship guarantee
Same day
Emergency response
Overview

Boiler Service, the essentials

What it is

A full annual boiler service to manufacturer specification. Combustion check with a calibrated flue gas analyser, seals and safety devices inspected, condensate trap cleared, casing off, burner inspected, controls tested, working pressures verified, all readings recorded on a written service report.

Who it's for

Every homeowner and landlord with a gas boiler, service records are almost always a condition of extended manufacturer warranties, and required annually for rental properties.

When you need it

Once a year, ideally in late summer or early autumn before the heating season starts and engineer diaries fill up. Landlords must have annual gas safety inspection on rental properties.

Why professional matters

A missed annual service is the single most common reason a manufacturer refuses a warranty claim. A £120 service protects a £2,000 appliance and picks up small faults, a weak fan, a corroding component, while they're still cheap to fix.

Why act now

What ignoring the problem actually costs

The mistakes that turn small jobs into big bills, and how a qualified engineer keeps them from happening.

Warranty voided in the small print

Most extended warranties (5, 7, 10, 12 years) require an annual service by a Gas Safe engineer. Skip one, and a future £1,500 heat exchanger claim gets refused.

Silent, dangerous faults

Cracked heat exchangers, blocked flues, failing seals, none give obvious symptoms until they're serious. Combustion analysis catches them early.

Landlord penalties

Renting a property without a current Gas Safety Record is a criminal offence with unlimited fines and up to 6 months' imprisonment.

Winter surprises

Boilers that limp through summer fail in the first cold week. A late-summer service catches marginal parts before you need heat.

Our process

A clear, predictable path from first call to guarantee

  1. 01

    Booked at a fixed price

    Flat fee agreed on the phone. No 'while we're here' extras added after the fact.

  2. 02

    Full manufacturer-spec inspection

    Casing off, burner and heat exchanger visually inspected, seals checked, condensate trap cleared, controls and safety devices tested.

  3. 03

    Flue gas analysis

    Calibrated analyser reading of CO, CO₂ and CO/CO₂ ratio recorded, the objective measure of a healthy, safe burn.

  4. 04

    Written service report

    Every reading recorded on a service sheet, copy for you, copy retained. Acceptable to manufacturers and letting agents.

  5. 05

    Advisory + guarantee

    Anything borderline is flagged in writing with an optional repair quote. Work carried on the day is guaranteed for 2 years.

What you get

Concrete outcomes, not vague promises

Warranty preserved

Manufacturer accepts the service record without argument.

Safer home

Combustion analysis catches carbon monoxide and flue integrity issues invisible to the eye.

Fewer breakdowns

Early detection turns £2,000 winter emergencies into £150 planned repairs.

Written paperwork

Service report is enough for solicitors, insurers, letting agents and manufacturers.

Efficient burn

A tuned boiler uses less gas, small saving on every heating hour, all winter.

Accredited & trusted by the brands we install

Gas Safe Register 574509
Worcester Bosch Accredited Installer
Vaillant Advance Installer
Checkatrade member, 10/10 rated
Gas Safe Register 574509
Worcester Bosch Accredited Installer
Vaillant Advance Installer
Checkatrade member, 10/10 rated
The detail

Boiler Service, in depth

Materials, methods and variations, the specifics that separate a proper install from a rushed one.

What a proper service actually includes

This is a boiler service, not a visual once-over. Casing comes off, burner and heat exchanger are visually inspected, all seals and safety devices are tested, condensate trap is cleared and refilled, gas working pressure is measured, standing and working flue-gas readings are logged, and all electrical connections and controls are checked. It typically takes 45–60 minutes on a modern combi.

Landlord Gas Safety (CP12) combined

If you're a landlord we can carry the annual boiler service and Gas Safety Record inspection out on the same visit, one attendance, one fee, both documents issued.

Which brands we service

Every major UK brand. As Worcester Bosch Accredited, Vaillant Advance and Glow-worm Approved installers, our service records are recognised by those manufacturers for warranty purposes without further evidence.

Frequency and timing

Manufacturers specify annual. The best time is late summer/early autumn, engineers are available, faults are found before you need heat, and you're not competing with the winter emergency queue for a slot.

Service vs safety inspection

A Gas Safety Record (CP12) is a legal document confirming appliances are safe to use; a service is a maintenance procedure that keeps them running well. Landlords need both. Homeowners generally only need the annual service.

Frequently asked

Boiler Service, your questions answered

How much is an annual boiler service?

We quote a fixed price on the phone based on your boiler and location. There are no 'while we're here' extras, anything additional is flagged in writing for you to approve separately.

How long does a service take?

45–60 minutes for a modern combi in normal condition. Longer if the boiler is heavily contaminated or additional advisory work is agreed.

Will my warranty still be honoured?

Yes. We're Accredited on Worcester Bosch, Vaillant Advance and Glow-worm Approved, our service records satisfy the manufacturer warranty conditions.

Do I get a written report?

Yes, a full service sheet with every check, working pressure and flue gas reading recorded. Suitable for warranty, insurance and letting agent records.

Is it the same as a Gas Safety Certificate?

No, a Gas Safety Record (CP12) is a legal document required for rental properties. A service is maintenance. Landlords typically need both; we can carry out both on the same visit.

When should I book?

Late summer or early autumn is ideal, engineers are available, faults are found early, and you avoid the winter emergency rush.

What happens if you find a fault?

We flag it in writing with a fixed-price repair quote. Nothing goes on the bill without your say-so.

Do you service all boiler brands?

Yes, all major UK brands. We're specifically Accredited on Worcester Bosch, Vaillant and Glow-worm.

Recent work

Recent boiler service projects

A selection of real installs across Ashford, Surrey and West London, no stock photography.

Annual boiler service with flue gas analyser on a Baxi boiler, Ashford, Surrey
Gas Safe 574509 · £2m PL cover

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