Boiler Service Cost UK: What You'll Actually Pay in 2026

Cost Guide 2026

Boiler Service Cost UK

Getting your boiler serviced every year keeps it safe, efficient and under warranty, but the price varies a fair bit depending on where you are and who you book. Here's a straight breakdown of what an annual boiler service actually costs in 2026, and what should be included for that price.

Average Boiler Service Cost in 2026

Most homeowners pay between £70 and £120 for a standard annual boiler service, with the UK average sitting around £90. Prices creep up in London and the South East, and vary depending on boiler type and whether you're booking a one-off visit or joining a service plan.

Service Type	Typical Cost
Standard annual combi service	£70 – £100
System or regular boiler service	£80 – £120
Service plan (annual, includes cover)	£10 – £20/month
Landlord gas safety check + service combined	£120 – £180

What Affects the Price?

1. Boiler type and age

Older boilers, or less common models, can take longer to service properly and sometimes need parts that aren't as readily available, which can push the price up slightly compared to a straightforward modern combi.

2. One-off visit vs service plan

Booking a single annual service tends to cost more per visit than joining a rolling service plan, which spreads the cost monthly and often includes priority callout or basic breakdown cover as part of the package.

3. Where you live

Labour rates in London and the South East typically run higher than the national average, so quotes in Dartford, Kent and Essex often sit a little above the UK-wide figure, though usually still below inner-London pricing.

What Should Be Included

• Visual inspection of the boiler casing, flue and seals
• Checking gas pressure and burner condition
• Testing safety devices and flue gas analysis
• Checking system pressure and topping up if needed
• A written service report, needed to keep manufacturer warranties valid

Worth knowing: most manufacturer warranties require proof of an annual service to stay valid, skipping a year can void cover even if the boiler is only a few years old. If your boiler's pressure keeps dropping between services, that's usually worth investigating separately rather than waiting for the next annual visit.

Why It's Worth Doing Every Year

A service isn't just a box-ticking exercise, it catches small issues (a failing seal, a creeping pressure drop, early signs of a faulty part) before they turn into a breakdown in the middle of winter. It also keeps your boiler running efficiently, which matters for your energy bills as much as reliability.

Our Gas Safe registered engineers carry out full annual services and combined landlord gas safety checks across Dartford, Kent, Essex, Sussex and London. Find out more about our boiler servicing, or see our Dartford boiler servicing page for local availability.