Question 1

How much does a boiler service cost in the UK?

Accepted Answer

A one-off boiler service costs £60-120 from a Gas Safe registered engineer. Annual cover plans that include the service plus breakdown cover cost £8-25 per month. British Gas charges £99 for a one-off service, while local engineers typically charge £60-80.

Question 2

How often should you service a boiler?

Accepted Answer

Once a year. Most boiler manufacturers require an annual service to keep the warranty valid. Landlords are legally required to have an annual Gas Safety check (CP12 certificate). Even after the warranty expires, annual servicing extends the boiler's lifespan and catches problems early.

Question 3

Is a boiler cover plan worth it?

Accepted Answer

For boilers over 7 years old, yes. Cover plans at £8-25/month include the annual service, emergency callouts, and parts and labour for repairs. A single emergency callout without cover costs £100-300, and a major repair like a heat exchanger can cost £400-800. For newer boilers under warranty, a one-off annual service is usually sufficient.

Question 4

What does a boiler service include?

Accepted Answer

A Gas Safe engineer checks: gas pressure and flow, flue and combustion readings, ignition and burner condition, seals and connections for leaks, condensate trap and drain, controls and thermostat operation, overall boiler efficiency. The visit takes 30-60 minutes.

Question 5

Do I need a boiler service for my landlord gas certificate?

Accepted Answer

A landlord gas safety check (CP12) and a boiler service are different things. The CP12 checks that gas appliances are safe, while a service checks the boiler is running efficiently. Many engineers offer both together for £80-110, which is cheaper than booking separately.

Question 6

What happens if I do not service my boiler?

Accepted Answer

Skipping services voids most manufacturer warranties (typically 5-10 years of coverage lost). An unserviced boiler runs less efficiently, increasing gas bills by 10-15%. Carbon monoxide risk increases as seals and flues degrade. The boiler's lifespan shortens from 15 years to 8-10 years.

Provider	One-off	Monthly Plan	Includes
Local Gas Safe engineer	£70	-	Service only
Boxt	£79	£11/mo	Service + parts + labour cover
HomeServe	£89	£8/mo	Service + emergency callouts
British Gas HomeCare	£99	£12/mo	Service + breakdown + parts + labour
Checkatrade (avg)	£75	-	Service only, vetted traders

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