How Often Should You Service Your Boiler?

The Short Answer

Your boiler should be serviced once a year, ideally before the start of the heating season in autumn. This is recommended by all major boiler manufacturers and is often a condition of maintaining your warranty.

Why Is Annual Servicing Important?

Safety

A gas boiler that isn't serviced regularly can develop faults that create a carbon monoxide risk. Carbon monoxide is odourless and colourless — you can't detect it without a CO alarm. An annual service includes a carbon monoxide check and inspection of the flue to ensure combustion gases are safely expelled.

Efficiency

Over time, boilers accumulate scale, soot, and debris that reduce efficiency. A serviced boiler runs more efficiently, which means lower energy bills.

Warranty

Most boiler manufacturers require evidence of annual servicing to maintain the product warranty. Skipping a service could invalidate your cover — leaving you paying for expensive repairs.

Spotting Problems Early

An experienced engineer can spot signs of wear, loose components, or developing faults before they cause a breakdown. Catching problems early is almost always cheaper than dealing with a full breakdown in winter.

What Does a Boiler Service Include?

Visual inspection of the boiler and flue

Combustion analysis (checking the flue gases)

Cleaning of burner and heat exchanger

Testing of safety devices and controls

Checking seals, gaskets, and pipework

Carbon monoxide test

Service certificate issued

What Happens If I Don't Service My Boiler?

Beyond the warranty implications, un-serviced boilers are statistically more likely to break down, more expensive to run, and in rare cases, can pose a safety risk. We strongly recommend not skipping annual servicing.

Book a Service Today

Our Gas Safe registered engineers cover Worthing, Lancing, Shoreham-by-Sea, and the wider West Sussex area. Call us or fill in our online form to book your annual boiler service.