Gareth Williams Heating

Boiler Servicing

Annual boiler servicing to keep your boiler safe, efficient and warranty-valid, with emailed service reports and automatic annual reminders.

Boiler Servicing

An annual boiler service keeps your boiler safe, efficient and warranty-valid. We email your service report from site and send an automatic reminder before it's due again next year.

What's included

  • Full manufacturer-standard annual service
  • Emailed service report direct from site
  • Automatic reminder before next year's service is due
  • Keeps manufacturer warranties valid
  • Gas Safe registered engineers
Registered No. 233679Verify on the register →
  • ATAG Installer
  • Vaillant Advance Installer
  • Glow-worm Installer
  • Baxi Main

Every job is carried out by our Gas Safe registered engineers, installing and servicing boilers in Newport, Cardiff, Cwmbran and across South Wales since 2007.

What happens when you book

Completed in a single visit; your report is emailed before the engineer leaves.

  1. Visual and safety checks

    The case, seals, flue and ventilation are checked for wear or damage, and safety devices are checked to confirm they operate correctly.

  2. Internal inspection

    Key components are inspected and cleaned as the manufacturer's service schedule requires.

  3. Performance check

    Operating pressure is checked and the boiler is run through firing, modulation and shut-down to confirm it's working as it should.

  4. Report emailed from site

    Results are recorded and emailed to you before the engineer leaves, with next year's reminder set automatically.

Boiler Servicing: common questions

How often should a boiler be serviced?
Once a year. An annual service keeps the boiler safe and running efficiently, and every manufacturer guarantee we publish depends on it.
Does servicing keep my guarantee valid?
Yes, and missing one can invalidate it. The longer ATAG and Vaillant terms are conditional on annual servicing, so a skipped year can cost you the guarantee on an otherwise sound boiler.
What do I get after the service?
A full manufacturer-standard service and a report emailed to you direct from site, plus an automatic reminder before next year's service falls due.
What happens if a fault is found during the service?
We'll explain it clearly, including whether it needs attention now or is worth keeping an eye on. A fault does not automatically mean a new boiler; often it's a straightforward repair.
Why does the emailed report matter?
It's your dated record that the service happened, which matters for a manufacturer warranty claim, a letting agent, or a buyer if you come to sell.
Is a service the same as a repair?
No. A service is the manufacturer-standard annual check that keeps a boiler safe, efficient and under guarantee. A repair fixes a specific fault, such as no heat, no hot water, a leak or lost pressure.
No heat? Call now01633 257230Get a quote