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Guide: servicing 12 November 2026 · 4 minute read

Will a service fix my boiler?

Sometimes, but not usually. A service keeps a working boiler safe and efficient. If something has stopped working, you need a repair visit instead. Here's how to tell which to book.

  • £120boiler service inc VAT
  • £120repair visit, parts priced first
  • 1service a year, which most boiler guarantees ask for
A boiler heat exchanger after cleaning at a service After a service

A service and a repair can look similar from the outside. The same engineer, the same boiler, often the same price for the visit.

The difference is what the visit is for. A service is maintenance. A repair is finding and fixing a fault.

Introduction01

What a service covers

Maintenance and safety checks, done once a year.

  • A visual check of the boiler and flue
  • Gas pressure and combustion checks with an analyser
  • Cleaning key parts such as the burner and heat exchanger
  • Checks on seals, sensors and the expansion vessel
  • A carbon monoxide alarm test
  • System pressure and inhibitor checked

For new customers, the first service is a full strip down. If a part such as a burner seal is needed, we tell you the price before fitting it.

A boiler heat exchanger covered in deposits before a service Before a service
A service02

Service or repair?

 Boiler serviceRepair visit
What it's forKeeping a working boiler safe and efficientFinding and fixing a fault
When to bookOnce a yearWhen something has stopped working
What you getCleaned, checked and testedHeating or hot water back
Price£120 inc VAT£120 inc VAT visit, parts priced first

If we can fix the fault on the repair visit, the visit fee is all you pay.

Side by side03

What a service can sort, and what it can't

If in doubt, tell the office what's happening when you book.

A service may help with

  • Noises from air in the system
  • A boiler running less efficiently because it's dirty
  • Pressure that's a little low

You need a repair visit if

  • A fault code is showing
  • There's no heating or no hot water
  • Water is leaking from the boiler
  • It's banging or locking out

Not sure? Book a service and tell us what's going on. If we find a fault, we explain it and price the repair before doing any work.

Heat Network engineer talking a customer through her boiler at the table Talking it through
Service or repair04

Which one sounds like you?

Which one sounds like you?05

Common questions

Will a service fix a fault code?

Usually not. A fault code means something has stopped working, which needs a repair visit to find and fix.

Does a service keep my guarantee valid?

Most boiler makers ask for a service every year to keep the guarantee valid. Check your guarantee paperwork for the exact terms.

How much is a boiler service?

£120 inc VAT. If a part such as a burner seal is needed, we tell you the price before fitting it.

How much is a repair visit?

£120 inc VAT. If we can fix the fault on the visit, that's all you pay. Any parts are priced before we fit them.

Can you service and repair in the same visit?

Tell us about the fault when you book. If it's quick, we may sort it on the day. If not, we price the repair before doing any work.

Is a service the same as a gas safety check?

No. A gas safety check, or CP12, is a safety inspection that landlords need every year. Our service or gas safety check guide explains the difference.

Common questions06

Not sure what you need? Give us a shout.

Book online in a couple of minutes or give the office a call, Mon to Fri, 9am to 5pm. We'll tell you what we think, and if the answer is to leave things as they are, we'll say that too.

i

Worcester Bosch Accredited Installer

Guarantees of up to 12 years on the boilers we fit. Gas Safe registered. Fife Trusted Trader. 400+ customer reviews.