How Much Does a Boiler Service Cost in the UK?
The average boiler service cost in the UK is about £100 for a gas boiler, with most prices falling between £80 and £120. Oil boilers cost £92.50 to service on average, and electric combi boilers £90. Spread over 12 months, a one-off service works out at roughly £7 to £10 a month. Your final price depends on your boiler type, location, engineer, and unplanned extras.
Your own price, though, can differ. Knowing the typical boiler service cost in the UK for your boiler and area makes it easy to spot whether a quote is fair. This guide covers costs by type and region, what’s included, how long a service takes, and the best time to book.
How much is a boiler service in the UK?
Not every boiler service costs the same. The type you have and the engineer it needs are the two things that move the price before location or timing even comes into it.
| Boiler type | Typical range | Average cost | Engineer required |
|---|---|---|---|
| Gas boiler | £80–£120 | £100 | Gas Safe registered |
| Combi boiler | £80–£120 | £100 | Gas Safe registered |
| Oil boiler | £75–£110 | £92.50 | OFTEC registered |
| Electric combi boiler | £70–£110 | £90 | Qualified electrician |
Combi boilers sit within the same price range as gas boilers, though they are quicker to service as there is no hot water cylinder to check. Oil boilers cost less on average but require an OFTEC-registered engineer. LPG boilers follow a similar range to gas but tend to cost a little more due to additional safety checks on the stored fuel. Electric boilers are the simplest to service as there is no flue or combustion to inspect. The checks carried out across the different types of boiler vary by fuel type, though the core safety inspection remains the same.
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What affects the cost of a boiler service?
The annual boiler service cost rarely comes down to one thing. The following factors are what moves a quote up or down before you have even spoken to an engineer.
Boiler type and age: The table above shows how fuel type moves the average price. Age adds to it separately. Older boilers take more time on site when components are worn parts are harder to source, or the system has not been serviced for several years.
Location: Where you live may affect what you pay. Some providers may charge as per the location while 24|7 Home Rescue offers a fixed price on every postcode.
Engineer: Prices vary between providers for the same inspection, so check what’s included and whether VAT is added. Always confirm your engineer is Gas Safe registered.
Unplanned extras: With some providers, emergency callouts and out of hours bookings may sit outside the standard service fee and can add significantly to the final bill.
Why should you have your boiler serviced?
A boiler service keeps your heating running safely and efficiently. Skipping one can mean a carbon monoxide leak going undetected, or a breakdown that costs far more than the service itself.
- To reduce the risk of carbon monoxide poisoning
- To catch small faults before they become expensive repairs
- To keep the boiler running at full efficiency
- To extend the boiler’s lifespan
An unplanned service is also worth booking outside the annual cycle if the boiler starts making unusual noises, heating becomes inconsistent, or the energy bill increases suddenly.
Is boiler service more expensive in London?
Boiler service cost in London is generally higher because of labour rates. Whether you pay that premium depends entirely on who you book. The extra cost comes from call-out charges and local labour rates, not a longer or more thorough visit. The South East sits just below London on price, and Scotland, Wales and the North of England tend to come in at the lower end of the national range.
The engineer you choose affects the price as much as your postcode, which is why two homeowners on the same street can receive different quotes for the same boiler. 24|7 Home Rescue’s Gas Safe registered engineers charge a fixed price nationwide, so a boiler service in London cost the same as any other UK postcode with no regional premium added.
What’s included in a boiler service price, and what costs extra?
A standard annual boiler service covers:
- Visual inspection of the boiler and its components
- Gas pressure and flue checks
- Combustion analysis
- Safety device and controls check
- Basic cleaning of accessible parts
- A service record confirming the checks carried out and the results
Any fault found on the day is quoted separately, since boiler repair sits outside the standard service fee. A powerflush, magnetic filter clean and CP12 certificate each carry their own charge. The exact checks carried out across the different types of boilers vary by fuel type, and what a boiler service includes differs between gas, oil and electric models.
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Found a fault during your service, or no hot water? A Gas Safe registered engineer can inspect your boiler and advise on the next step.
How much does a boiler service and gas safety certificate cost for landlords?
Most landlords confuse a boiler service with a gas safety certificate. The CP12 gas safety certificate is a legal requirement under the Gas Safety (Installation and Use) Regulations 1998. A boiler service isn’t a legal requirement, but it keeps your boiler safe and efficient, so most landlords book it alongside the gas safety check on the same visit.
Booking both together on the same visit costs less than booking each separately. A landlord gas safety certificate and a boiler service cover different things though, and neither substitutes for the other, which is the distinction most landlords miss when managing their service vs gas safety check obligations.
24|7 Home Rescue’s CP12 brings both under one policy from £6 a month, covering the annual boiler service, gas safety certificate and boiler breakdown, with Gas Safe registered engineers carrying out the visit.
Landlord Gas Safety Certificate (CP12)
Stay compliant with your annual gas safety check. Book your CP12 with a boiler service on the same visit or get both under our Landlord Boiler Cover.
How long does a boiler service take?
A combi boiler service typically takes around 30 to 60 minutes. A regular or system boiler can take around 1.5 hours or more because of the additional checks on the hot water cylinder and controls. The exact time depends on the type and condition of your boiler, and if the engineer finds a fault during the visit, more time may be needed.
When is the best time to book a boiler service?
The best time to book a boiler service is generally spring or summer, between April and August. Demand is lower, so engineers have more availability, and appointments are easier to find. From October to January, breakdowns of spike and engineers are stretched, so slots are harder to get, and costs can rise. Booking early also means you can fit the service in before the heating season starts. 24|7 Home Rescue carries out boiler services between April and September, which keeps winter capacity free for emergency callouts.
How to book a boiler service with 24|7 Home Rescue
A boiler service typically costs £80 to £120, depending on boiler type, location and any extras. The standard visit covers the core safety checks, while repairs and parts are charged separately. Booking in spring or summer keeps costs down, and boiler cover is worth considering if you want breakdowns and repairs covered as well.
24|7 Home Rescue’s Gas Safe registered engineers carry out annual boiler services across every UK postcode at a fixed price. How much does it cost to service a boiler with 24|7 Home Rescue? A one-off service costs £86.40, and the monthly policy starts at £7.20, covering the annual boiler service and boiler breakdown. Book through our website.
If you want the service and breakdown costs under one selected policy, boiler cover from 24|7 Home Rescue covers both with parts and labour included (subject to terms and conditions).
Boiler Cover You Can Trust
Get cover for boiler breakdowns for one monthly price, with an annual boiler service available as an optional feature. Terms and conditions apply.
Frequently Asked Questions
Is an annual boiler service worth the cost?
Yes. A service can detect minor issues before they escalate into costly repairs, and it ensures your boiler operates safely and efficiently. Having service annually is much cheaper than having to deal with a costly breakdown later.
What is the difference between a boiler service and a boiler repair?
A boiler service is an annual check while a boiler repair is a call-out to fix a particular fault, like no heating, no hot water or if your boiler keeps shutting down. A service can detect faults earlier, but when there is something to fix, it is quoted and charged separately.
Can I service my own boiler?
No. According to the Gas Safety (Installation and Use) Regulations 1998, gas work must be carried out by a Gas Safe registered engineer, so you can’t service a gas boiler yourself.
How do I know if a boiler service quote is fair?
To see if a boiler service quote is fair, check the average price, and determine if the boiler service quote will include a combustion analysis and whether VAT is added. Make sure the engineer is Gas Safe registered by verifying their registration number on the Gas Safe Register website.
At 24|7 Home Rescue, we aim to keep our blogs accurate and helpful at the time of publication. However, details such as images, services, prices, offers, discounts, or related information may change over time. Content is provided for general information only and should not be taken as professional advice. For appliance- or boiler-specific guidance, always refer to your manufacturer’s user manual, as controls, settings and features may vary by brand and model. For the latest updates on our services, prices, and any available offers or discounts, please review our Terms & Conditions or contact us directly. 24|7 Home Rescue accepts no liability for any actions taken based on outdated or incomplete content. Our team is always happy to help with any questions.
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