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How Often Should You Service Your Boiler?

Boiler MaintenanceCraig Sinnott20 December 20255 min read

Regular boiler servicing is one of the most important things you can do to keep your home safe and your heating system running efficiently. But how often should you actually book a service? Let's explore the recommendations and why they matter.

The Golden Rule: Annual Servicing

The simple answer is that your boiler should be serviced once every 12 months. This is the recommendation from boiler manufacturers, Gas Safe Register, and heating industry professionals. Annual servicing ensures your boiler operates safely and at peak efficiency throughout the year.

Why Annual Servicing Matters

Safety First

A faulty boiler can produce carbon monoxide, a colourless, odourless gas that can be fatal. Annual checks ensure all safety components are working correctly.

Maintain Efficiency

A well-maintained boiler runs more efficiently, using less gas to heat your home. This means lower energy bills and reduced carbon emissions.

Prevent Breakdowns

Regular servicing catches small issues before they become major problems. This is especially important before winter when you need your heating most.

Protect Your Warranty

Most boiler warranties require annual servicing by a Gas Safe registered engineer. Missing a service could void your warranty.

What Happens During a Boiler Service?

A professional boiler service typically takes 30-60 minutes and includes:

  • Visual inspection of the boiler and controls
  • Checking for leaks, corrosion, and wear
  • Testing the gas pressure and flow
  • Inspecting the flue and ventilation
  • Checking the ignition and burner
  • Testing safety devices and controls
  • Cleaning key components as needed
  • Checking the condensate trap and pipe
  • Recording a combustion analysis

When's the Best Time to Service Your Boiler?

While you can service your boiler at any time of year, summer and early autumn are ideal. Engineers are less busy during these months, meaning you can often get appointments more easily and potentially at better rates. Plus, if any issues are found, there's time to fix them before the cold weather arrives.

Landlords: Special Requirements

If you're a landlord, annual gas safety checks are a legal requirement, not just a recommendation. You must have all gas appliances, including boilers, checked every 12 months by a Gas Safe registered engineer and provide tenants with a copy of the Gas Safety Certificate (CP12).

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