How Much Does a Boiler Service Cost in the UK? (2026 Price Guide)

If you are trying to understand the boiler service cost UK households can expect in 2026, this guide is for you. A boiler service is one of the most worthwhile pieces of home maintenance you can book. It keeps your heating safe, helps it run efficiently and can catch small faults before they turn into an expensive breakdown in the middle of winter.

Below you will find indicative price ranges, an explanation of what a proper service should include, the factors that move the price up or down, and the warning signs that should make you stop and find someone else.

A quick but important note before we begin. Every figure here is a rough guide, typical at the time of writing. Prices vary by region, by property, by boiler type and by the individual engineer. Treat these numbers as a starting point for conversations, not as a fixed quote.

What does a boiler service cost in the UK?

The boiler service cost UK households pay usually depends on whether you are booking a one-off visit or a service bundled into an annual cover plan. As a rough guide:

Type of service	Typical indicative range
One-off standard gas boiler service	around £70 to £130
Service included in an annual cover plan	often "free" within a plan costing roughly £15 to £40 a month
Oil (heating oil) boiler service	around £90 to £180
Landlord gas safety check (CP12) only	around £60 to £100
Combined service plus CP12 (landlords)	around £90 to £150

These ranges are approximate and will move with your location, the age and make of your boiler and how busy local engineers are. City centres and the South East tend to sit at the higher end. A long-standing local engineer who already knows your boiler may charge less than a national call-out service.

One-off service versus a cover plan

A one-off service is a single visit you pay for there and then. It is simple and you are not tied into anything.

A cover plan, sometimes called a boiler care plan, spreads a monthly fee across the year and usually folds the annual service into that fee, along with some breakdown cover. A plan can feel reassuring, but do the sums. Add up twelve months of payments and compare that against a one-off service plus the cost of the occasional repair. For a newer boiler in good order, paying as you go is often cheaper. For an older boiler, the predictability of a plan may suit you better.

What should a proper boiler service include?

A genuine service is more than a quick glance and a sticker. As a rough guide, a competent engineer should:

• Check the boiler fires up and runs correctly, with the controls working as they should
• Inspect the flue and the area around it for safe operation and correct positioning
• Test gas pressure and flow against the manufacturer figures
• Check for leaks, corrosion and any signs of damage
• Clean key components where needed and check seals
• Carry out a combustion (flue gas) analysis to confirm the boiler is burning cleanly
• Test safety devices are working
• Leave you with a written service record explaining what was done and any findings

If an engineer is in and out in ten minutes with no paperwork, you have not had a proper service.

What affects the price?

Several things move the boiler service cost up or down:

• Boiler type. Standard gas combi boilers are the most common and usually the cheapest to service. System and conventional boilers can take longer. Oil-fired boilers generally cost more because they need specialist attention.
• Location. Labour rates differ across the UK. London and the South East tend to be dearer than much of the North, Wales and Scotland.
• Gas versus oil. Oil boilers need an OFTEC-registered engineer and usually cost more to service than gas.
• Landlord certificates. If you are a landlord, a gas safety check (the CP12, sometimes called a Gas Safety Record) may be done alongside the service. This is a legal requirement for rented homes and adds to the cost, though combining it with a service is usually cheaper than booking each separately.
• Access and condition. A boiler that is hard to reach, very old, or has been poorly maintained can take longer and cost more.

Who is allowed to service your boiler?

This part matters more than the price. By law, any engineer working on a gas boiler in the UK must be Gas Safe registered. The Gas Safe Register is the official list of engineers who are legally permitted to work on gas appliances. Every registered engineer carries an ID card showing their licence number and the types of work they are qualified for.

For an oil boiler, look for an OFTEC-registered technician instead.

Always ask to see the card before any work begins, and check the details. This is not rudeness. It is exactly the kind of check a good engineer will expect and respect.

Red flags to watch for

Be cautious if you notice any of the following:

• The engineer cannot show a valid Gas Safe (or OFTEC) registration
• You are offered no written service record or certificate afterwards
• The "service" takes only a few minutes with no combustion test
• You are pushed into an expensive repair on the spot with no clear written explanation
• The price quoted by phone changes sharply once the engineer arrives, with no good reason
• Payment is demanded in cash up front before any work is done

Trustworthy providers are happy to explain what they are doing and why. The verification that sits behind a tradesperson is just as important as the headline price, which is exactly why we believe checks should come first. You can read more about that in our guide on why insured and verified providers matter.

How often should you service your boiler?

As a general rule, once a year. Many manufacturers also require an annual service to keep the warranty valid, so it can be false economy to skip it. Booking in late summer or early autumn is sensible, because it gets your heating checked before the cold sets in and before engineers are at their busiest.

Comparing this to other home costs

A boiler is only one part of a safe, well-run home. If you are budgeting for the year ahead, it helps to understand other common trade costs too. Our companion piece on electrician costs in the UK for 2026 walks through how electricians charge and what common jobs typically cost, using the same honest, indicative approach.

A safer way to find your engineer

The hardest part is rarely the price. It is knowing the person turning up is genuinely qualified, properly insured and reliable. That is the problem DomusVesta is built to solve. Every provider on our platform is identity checked and has their insurance verified before they ever appear, reviews come only from real completed work, and you talk directly to the provider from start to finish, with clear pricing before you decide. We do not handle your payments and we never take commission on the job. We simply help local households find local providers they can trust.

DomusVesta is currently pre-launch and signing up members ahead of a town-by-town rollout across the UK. If you would like to be among the first to find verified heating engineers in your area, create your free account today. It costs nothing, and it puts a properly checked provider within reach the moment you need one.