How much does a boiler service cost in the UK?
A boiler service costs £90 on average in the UK. Most jobs fall between £70 and £160 for a service. Service type: Standard annual service £70 to £120, Landlord service + gas safety certificate £110 to £160, Service on a one-off callout £80 to £140. Prices reviewed June 2026.
A one-off annual gas boiler service in the UK usually costs £70 to £130, with most people paying around £90. A landlord service with a gas safety certificate (CP12) sits higher, at roughly £110 to £160.
Boiler service cost calculator
Use the calculator to price your boiler service in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Boiler service cost breakdown
Typical boiler service costs, by option:
| Service type | Typical UK cost |
|---|---|
| Standard annual service | £70 to £120 |
| Landlord service + gas safety certificate (CP12) | £110 to £160 |
| Service on a one-off callout / premium brand | £80 to £140 |
What's included in the price?
Typical boiler service prices include:
- Visual inspection of the boiler, flue and gas connections
- Checks on gas pressure, flow and the burner combustion figures
- Testing of safety devices and the seals on the case
- Cleaning of key internal parts where needed
- The service recorded in your Benchmark book or a digital service history
- A written report noting anything that needs attention
What changes the price?
The things that move boiler service prices most:
Whether the visit is a one-off callout or part of a cover plan
Whether you add a gas safety certificate (CP12) for a let property
Boiler type and brand, as some premium models take longer
Your region, with London and the South East charging more
Any extra appliances, such as a gas hob or fire, checked on the same visit
How the price is built up
The price is built around a Gas Safe registered engineer's time for a visit of 30 to 60 minutes, plus their travel, insurance and registration costs. A landlord CP12 adds the extra appliance checks and the certificate paperwork, which lifts the total. A one-off callout on a premium brand can sit at the top of the band where the model takes longer to strip down and check. A boiler service is almost entirely labour, as it is the engineer's time and expertise rather than any parts, which are only charged if a repair is needed.
Ways to keep the cost down
- Book the service and a CP12 together if you are a landlord, as the package usually saves £20 to £40
- Get two or three quotes from local Gas Safe engineers, as independents often undercut the large firms
- Schedule the service in spring or summer when engineers are quieter and demand is lower
- Only choose a cover plan if you genuinely want the repair cover, not just the service
Does where you live change the cost?
In London, a boiler service typically costs around £120, about 30% above the UK average of £90. In the North, Scotland and Wales the guide figure is nearer £85.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £70 | £90 | £160 |
| London | £90 | £120 | £210 |
| South East / South West | £80 | £100 | £180 |
| North / Scotland / Wales | £65 | £85 | £150 |
Guide prices for a service, scaled with the same regional multipliers as the calculator. Not quotes.
Boiler service cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £60 | £75 | £140 |
| Birmingham | £70 | £90 | £160 |
| Bristol | £75 | £100 | £180 |
| Cardiff | £65 | £85 | £150 |
| Edinburgh | £70 | £90 | £160 |
| Glasgow | £65 | £80 | £140 |
| Leeds | £65 | £85 | £150 |
| Liverpool | £65 | £85 | £150 |
| London | £90 | £120 | £210 |
| Manchester | £65 | £85 | £150 |
| Newcastle | £65 | £80 | £140 |
| Sheffield | £65 | £85 | £150 |
City guide estimates, scaled by local labour costs. Indicative averages for boiler service, not quotes.
The South East and London run around £110 to £130, while much of the North and Midlands sits closer to £70 to £95.
Common questions
How much does a boiler service cost in 2026?
Boiler service prices in 2026 run from about £70 to £130 for a one-off annual gas service, with most households paying around £90. London and the South East tend to charge £110 to £130, while parts of the North and Midlands come in nearer £70 to £95. Oil boilers cost more, at roughly £120 to £150, because they take longer to check and clean.
What does a boiler service include?
Boiler servicing covers a visual inspection of the boiler, flue and gas pipework, then checks on gas pressure, combustion figures and the flow rate. The engineer tests the safety devices, inspects the seals, cleans internal parts where needed, and records the work in your Benchmark book. You get a written report, usually the same day, noting anything that needs a repair or a closer look.
Does a boiler service keep my warranty valid?
Boiler warranties from brands such as Worcester Bosch, Vaillant and Ideal require a service by a Gas Safe registered engineer every 12 months, with the paperwork to prove it. Skip a year and the manufacturer can void the cover, leaving you to pay the full cost of any repair. At around £90 a year, a service is far cheaper than losing warranty protection on a boiler that can cost £2,000 or more to replace.
How much is a landlord gas safety certificate (CP12)?
Landlord gas safety certificates cost about £60 to £90 for a single appliance in 2026, rising to £85 to £120 where a boiler, hob and gas fire are all checked. Many engineers offer a combined service and CP12 package for £110 to £160, which usually saves £20 to £40 against booking the two separately. Landlords must arrange this check every 12 months by law.
Is a boiler service different from a boiler repair?
Boiler servicing is a planned annual check to confirm the appliance is safe and running efficiently, and it does not fix a fault. A repair addresses a specific problem, such as no hot water or a fault code, and is charged separately, often £150 to £400 depending on the part. A service can flag an early issue, but the repair itself is a further job with its own cost.
Is a boiler service cheaper on a cover plan?
Boiler cover plans include the annual service in the monthly price, so you avoid a separate £70 to £130 bill. Plans such as British Gas HomeCare start at around £24 a month and bundle breakdown cover and callouts alongside the service. Over a year that is more than a one-off service alone, so a plan only saves money if you also value the repair cover it provides.
How often should you service a boiler?
Once a year. An annual service keeps most manufacturer warranties valid, catches faults while they are cheap, and confirms the boiler is burning safely. Book it in summer if you can: engineers are quieter, some firms charge less, and you are not left without heating if a fault is found. Landlords must also have a gas safety check (CP12) every 12 months, which is usually combined with the service.
Can I service my own boiler?
No. A gas boiler must be serviced by a Gas Safe registered engineer, and it is illegal and dangerous to do the gas checks yourself. This is why a service is £70 to £120 and is almost entirely the engineer's time and expertise rather than parts. The only DIY part is keeping the boiler area clear and booking the service; the checks themselves have to be done by a registered engineer.
Is a boiler service worth paying for every year?
Yes, in most cases it is worth the £70 to £120. An annual service is usually a condition of keeping the manufacturer warranty valid, and it catches small faults before they become an expensive repair or a safety risk. It does not add resale value, but it protects the boiler you rely on and your cover, so it is money spent on safety and peace of mind rather than a payback.
Check they are registered before they start
Gas work is the one job on this site you should never let an unregistered person touch. It is illegal, it cannot be signed off or insured, and the risk is carbon monoxide. Checking takes about a minute and it is free.
- Find or check a registered engineer Gas Safe Register · Anyone working on gas must be on it by law. Check the 7-digit licence number on their ID card, or text their business registration number to 85080
- How to check an engineer is Gas Safe registered HSE · The regulator's own instructions, including the free 0800 408 5500 helpline
Official guidance and sources
The rules and schemes referenced on this page come from these official UK sources. The price figures are Costwise's own; see how we price.
- Gas safety: home owners HSE · By law, anyone you pay to service or work on a gas boiler must be Gas Safe registered.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.