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myHow Much Is a Boiler Service? [UK]
At a Glance
- The average boiler service price is around £100 in 2025.
- It takes approximately 1 hour to complete a boiler service.
- A breakdown of the cost to service boilers of different types (gas, electric, and oil) in the UK.
- What factors impact the boiler service price you're quoted by tradespeople, as well as what's involved in boiler inspections.
- How to find and hire a heating engineer near you.
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Want to know how much boiler service costs in the UK?
The average boiler service price is between £75 and £125 in 2025.
In this guide, we cover the cost to service boilers of different types, including gas, electric, oil, and LPG.
This makes it simple and easy for you to get a ballpark idea of how much boiler servicing costs, so that you can compare boiler service prices you get quoted.
We also discuss additional costs, how long this job takes, and what can affect the cost of a boiler service!
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£100
Table of Contents
- How Much Does a Boiler Service Cost?
- Additional Boiler Service Costs
- How Much Do Heating Engineers Charge?
- What Impacts the Boiler Service Costs?
- What's Involved in a Boiler Service?
- Can I Complete a Boiler Service Myself?
- How Much Do Different Types of Boilers Cost to Service?
- Building Regulations for a Boiler Service
- Does My Boiler Need Servicing?
- How Do I Know If My Boiler Needs a Service?
- How Often Should You Service Your Boiler?
- Local Engineer vs National Provider?
- Benefits of a Boiler Service
- How Much Does Removing a Boiler Cost?
- Checklist: Hiring a Heating Engineer to Service a Boiler
- FAQs
- Sources
How Much Does a Boiler Service Cost?
So, how much should a boiler service cost you in 2025?
The average boiler service costs £100 in the UK.
However: Depending on the type of boiler, your service can range from £75 to £125.
Usually, a boiler service will take 1 hour to complete.
What impacts how much boiler servicing costs?
Let's break down that price range:
- The cost to service a gas boiler is between £85 and £120.
- The cost to service an electric boiler is between £75 to £110.
- The cost to service an LPG boiler is between £90 to £120.
- The cost to service an oil boiler is between £90 to £125.
The type of fuel your boiler uses is the biggest factor in determining your boiler service price.
Gas and electric boilers are easier to service, needing fewer specialist parts - whereas LPG and oil boilers need additional safety checks on their fuel storage, bumping up their overall maintenance costs.
How often should an OFTEC technician service my oil boiler?
"You should have your oil boiler serviced annually. This should include a new nozzle and a new supply hose. Unless you fit a green coloured hose then these are life expectancies of 2 years before being changed."
Annual Boiler Service Price
The table below indicates the different annual boiler service costs:
| Description | Duration | Average Cost |
|---|---|---|
| Annual Gas Boiler Service Price | 1 – 1.5 hours | £85 – £120 |
| Annual Electric Boiler Service Price | 1.5 – 2 hours | £75 – £110 |
| Annual LPG Boiler Service Price | 1.5 – 2 hours | £90 – £120 |
| Annual Oil Boiler Service Price | 1.5 – 2 hours | £90 – £125 |
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The biggest part of the total cost to service a boiler is the labour rate charged by the heating engineer to test and inspect your boiler.
Supply costs are low, and the materials required for any type of boiler service cost between £4 and £6.
What about gas and electrical safety certificates?
Gas and electrical safety certificates are not provided as part of a standard boiler service. And, unless you're a landlord in the UK, there's no legal requirement for you to have them.
Here's what you need to know:
- Gas Safety Certificate: UK landlords are required to renew this annually if their property has a mains gas connection. Gas safety certificates cost between £60 and £100.
- Electrical Safety Certificate: UK landlords must update this every 5 years, and leave a copy of the report with their tenants. Electrical safety certificates cost around £120.
Additional Boiler Service Costs
When you get your boiler serviced, some additional heating jobs may need to be carried out if the engineer finds issues with your system.
These can either be small upgrades to improve energy efficiency, or they may be larger, more invasive upgrades to your heating system.
Common Additional Boiler Servicing Costs
To fix common heating problems, your heating engineer is likely to suggest the following:
- Radiator Bleeding: Radiators with trapped air won't distribute heat effectively, and may increase your running costs as the heat isn't being distributed efficiently. The cost to bleed radiators is around £100.
- System Power Flush: If your heating system is old and running inefficiently, your heating engineer will likely suggest a power flush to clear the system of debris, sludge, and other buildup. A power flush costs £400.
- Smart Thermostat Upgrades: Swapping your existing thermostat for a smart model can lower your heating bills and give you greater control over your heating schedule via your phone. The cost to install a smart thermostat is £265.
Larger Heating Upgrade Costs
If you own an older property and haven't updated your heating system in a number of years, your heating engineer may uncover bigger problems while servicing your boiler that require attention:
- New Radiators: If bleeding your radiators and flushing your system still hasn't improved your radiator performance, it might be time for new ones. New radiators cost around £200 per radiator.
- New Boiler Installation: Boilers have a lifespan of 10 to 15 years. If your heating engineer finds that the cost of repairing is more than the cost of a new boiler, they may suggest you replace your boiler instead. New boiler installation costs around £2,400.
How Much Do Heating Engineers Charge?
Let's take a closer look at the labour cost to service a boiler in the UK, and how long you can expect it to take.
How much can you expect to pay for labour?
The labour cost of having a boiler serviced is between £75 and £125.
How much will a power flush for my boiler cost?
"Power flush cost would depend on how many radiators you have and if your system is vented or unvented. Our average cost is £75 per radiator which includes cleaners and inhibitors and a new magnetic filter."
What Impacts the Boiler Service Costs?
What can affect the labour costs?
- Your property location (London and the surrounding areas will cost £10 to £20 more than the rest of the UK)
- The type of boiler you have (oil and LPG boilers are more expensive to service than gas and electric)
- Whether you hire a local contractor or a national company
- If any additional work needs to take place
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What's Involved in a Boiler Service?
Here's what happens during a gas boiler service:
- Visual Inspection - The engineer will carry out a visual inspection of the boiler to ensure it appears to be in full working order. This will be done according to the current standards and requirements to look out for any leaks or corrosion. They will also do a visual check of the flame in your boiler.
- Boiler Casing Removal - The engineer will remove the boiler casing and check the internal components to ensure that everything is working correctly. They will also then clean the inside of the boiler. This includes components such as the burner, spark probe, main injector, and heat exchanger.
- Checking the Flue - The flue will be checked to ensure there are no obstructions inside the terminals and that the flue is fitted correctly and safely.
- Gas Pressure and Flow Check - To ensure your boiler is working at the correct pressure and gas flow, the engineer will test it and check it against the boiler manufacturer's guidelines.
- Safety Checks - The engineer will check that your boiler's safety devices that shut down the boiler's operation in the event of a fault are working correctly.
- Boiler Fire Up Check - Once this is all complete, they'll then fire up your boiler to check for any faults while the boiler is in operation.
What's the difference between a commercial and domestic heating engineer? Do they need to have different licenses/qualifications and/or other requirements?
"Domestic work relates to gas appliances designed for use in a domestic property and gas pipework up to 35mm in diameter. Commercial work categories refer to the size of pipework, appliance type, and gas consumption in addition to property type."
Can I Complete a Boiler Service Myself?
You cannot carry out a boiler service as a DIY job. To ensure your safety and compliance with heating regulations, you must hire a qualified heating engineer.
The type of heating engineer you need to hire to service your boiler depends on the type of system you have:
- Gas boilers are the most prevalent in the UK, and it's a legal requirement to have a Gas Safe registered heating engineer carry out any work.
- LPG boilers will also need a Gas Safe registered engineer, but with an additional LPG qualification.
- Oil boilers require an OFTEC-registered technician for installation and any maintenance tasks.
- Electric boilers need a qualified electrician who can service them and make any necessary repairs.
How Much Do Different Types of Boilers Cost to Service?
There are a number of different boiler services, depending on the type of boiler that you have. Below is a list of the different types of boiler service:
Gas Boiler Service Cost
Gas boilers are the most popular type of boiler in the UK.
These units tend to be the go-to choice for properties which have a mains gas connection, as it's a more cost-effective way to heat a home, as gas prices per kWh are significantly lower than electricity prices per kWh.
A gas boiler service involves visually inspecting the boiler for any visual faults and internally inspecting the boiler’s components for any signs that it isn’t functioning correctly.
So, how much is a gas boiler service going to cost you?
The average gas boiler service price is between £85 and £120.
Electric Boiler Service Cost
Like oil and gas boilers, electric boilers should have an annual service to ensure they're operating safely and efficiently.
This is also a regular opportunity for a professional to identify any small issues before they develop into more serious problems that are expensive to deal with.
For electric boilers, a professional will inspect and test internal components, like electrical connections, the heating element, and the thermostat.
Amongst other things, they'll also check that the built-in safety features are working correctly and check for other common problems (e.g., limescale or water pressure problems).
The average electric boiler service price is between £75 and £110.
Oil Boiler Service Cost
An oil boiler service involves cleaning the boiler and flue, cleaning the oil burner and replacing the nozzle, checking and replacing the oil filter, inspecting the fuel tank, and performing a full combustion test.
An oil boiler service costs on average around £90 and £125.
LPG Boiler Service Cost
LPG boilers are common in off-grid locations where mains gas isn't available. While they don't use mains gas, they do use a form of gas - LPG - which is stored at your property for use.
The cost to service an LPG boiler is between £90 to £120.
Building Regulations for a Boiler Service
You don't need building regulations approval to carry out a boiler service.
However, if your system needs to be replaced, you will need building regulation approval. This is due to the safety issues that may be involved with installing a new boiler or central heating system.
Under current building regulations (Part L), all new boilers must have a minimum efficiency of 92%.
How often do boilers need replacing?
"There is no time limit as such on the lifetime of a boiler. However, an 8+ year old boiler may start causing you problems, resulting in part changes, which may work out a lot more expensive. A better solution would be to get a new boiler with a 10-year warranty."
Does My Boiler Need Servicing?
Your boiler needs to be properly maintained in order to keep it working properly and efficiently - this includes having an annual boiler service.
How Do I Know If My Boiler Needs a Service?
If you're not due for your annual boiler check, but you think something's wrong with your home's heating, it can be a good idea to get a heating engineer in to check your system.
If you're experiencing any of the following, it could be a sign that your boiler needs a service:
- Strange noises coming from the boiler - While some running noise is normal, constant banging, knocking, or gurgling sounds aren't normal, and could mean your boiler needs attention.
- Repeated loss in water pressure - It's normal to top up your pressure every now and again, but if it's repeatedly dropping after being topped up, it might mean there's a leak somewhere in your system.
- Lack of heating - If your heating simply isn't working, your boiler is probably the reason and needs some maintenance.
- Change in flame colour - In gas boilers, the flame should be blue. If it's changed to yellow or orange, you need urgent attention from a Gas Safe engineer as this could lead to a dangerous situation.
- Error codes showing - If your boiler has an error code that won't seem to remedy, it's time to call in a local heating engineer.
How Often Should You Service Your Boiler?
You should check with your manufacturer to see the service period of your particular boiler model.
As a general rule of thumb, a boiler should be serviced 12 months after it has been installed, and it should then be serviced every 12 months thereafter.
How can I ensure my boiler is ready for the winter?
"We would recommend getting your boiler serviced once a year and if this hasn't been done for a while, getting a service booked in with a qualified Gas Safe Engineer."
Local Engineer vs National Provider?
When booking your annual boiler service, you have a choice between a local heating engineer or a national boiler servicing company.
Let's go over the main pros and cons of each service:
Local Heating Engineer
Pros
- ✔ Better availability at short notice, usually available for same-day or next-day services
- ✔ Local heating engineers have lower overhead costs, which translates to lower service costs for you
- ✔ Direct communication with your local heating engineer
- ✔ More personalised service if you choose the same local company for your boiler service year after year
Cons
- ✖ If it's a one-person company and the engineer is sick, you will need to wait for them to return to work
- ✖ May not have complete 24/7 emergency call-out service
National Heating Engineer
Pros
- ✔ Nationwide availability, so even if you move house, you can use the same company for your service
- ✔ Boiler service from a recognised name brand
Cons
- ✖ Long wait times for availability, and you'll need to go through multiple levels of contact to eventually book in with a provider
- ✖ Typically higher costs as national companies have big overheads to recuperate in service and call-out fees
- ✖ You may be met with pushy sales tactics to get you to purchase unnecessary add-ons to your service
We recommend using local heating engineers to service your boiler to ensure a fast, reliable service, at the best price possible - and you can easily start your search for boiler specialists using MyJobQuote.
Benefits of a Boiler Service
Protects You and Your Family
If your boiler becomes faulty, it can be extremely dangerous.
Getting your boiler serviced annually can help safeguard it against potential gas leaks, carbon monoxide poisoning, explosions, or fires.
Carbon monoxide is a deadly gas that can leak without anyone knowing. If you have your boiler checked annually, it will be checked for any possible leaks that could be deadly.
Saves on Boiler Repair Costs
Having your boiler serviced annually can improve the reliability of your heating system and can increase the overall lifespan of your boiler.
This means that you can potentially save money on boiler repair costs.
Reduces Your Energy Bills
An annual boiler service will help to ensure that your boiler is working at optimal efficiency. This can also help to prevent heating fuel waste.
With an annual boiler service, you will not only save money on your energy bills, but you will also reduce your carbon footprint.
Preserves Your Boiler's Guarantee
If you don’t keep up with having an annual boiler service, you may invalidate your boiler guarantee.
What is involved in using a boiler guarantee if it’s worn down before its time?
"For a boiler warranty to be valid, you MUST service the boiler every 12 months. In the absence of this, you will not have any case."
How Much Does Removing a Boiler Cost?
The average new boiler installation costs around £2,400.
While this is a significant investment, it can make more sense if your existing boiler is outside of warranty and requires costly repairs.
It shouldn’t take longer than a few hours to complete a boiler removal.
I’m looking to buy a property that has a back boiler and replace this with a combi. Is there a rough costing for this? It’s a three-bed house.
"Without checking onsite, it's difficult to quote. But it can cost you between £3,300 to £3,900."
Checklist: Hiring a Heating Engineer to Service a Boiler
There are a number of factors that you should consider when choosing someone to carry out a boiler service for you.
Below is a list of some of the main things that you should think about when looking for the right contractor for the job:
- Gather at least 3 quotes from different boiler specialists using MyJobQuote to get an idea of average local costs.
- Ask for an itemised breakdown of costs so you can ensure you're paying a fair price.
- Make sure the engineer has experience working on your particular type of boiler, with the correct qualifications and certifications.
- Remember to ask if the engineer offers any guarantees with their work.
FAQs
When does a new boiler need its first service?
A new boiler should have its first service 12 months after it has been installed.
How long does a boiler last?
Modern boiler installations in the UK usually last between 10 and 15 years before they need to be replaced. This assumes you keep on top of regular maintenance (such as an annual boiler service), as this allows you to catch any problems before they snowball into bigger issues.
What is a combi boiler?
A combi boiler is the most popular type of boiler in the UK. This type of boiler is typically gas-powered, as this makes them more cost-efficient. Combi boilers are an improvement over traditional boilers as they handle your central heating and provide hot water on demand from your taps.
Do I need a boiler service if I have a new build?
Yes, new build properties with brand-new boilers still need annual boiler services. This is to ensure the safety and efficiency of your boiler, but it is also a requirement to keep your boiler's warranty valid.
What is the cheapest boiler to service?
The cheapest boiler to service is an electric boiler, ranging between £75 and £110.
When is the best time to have a boiler service?
In the summer months, you may not notice fluctuations in your boiler's power so much as you would during the colder months, leading to a surge in heating engineer appointments being booked in the winter months. The best way to beat the seasonal boiler check rush is to simply book in advance.
Sources
https://www.planningportal.co.uk/permission/common-projects/boilers-and-heating/building-regulations
https://www.gassaferegister.co.uk/find-an-engineer-or-check-the-register/
https://aphc.co.uk/
https://www.ciphe.org.uk/
https://www.viessmann.co.uk/heating-advice/when-does-a-boiler-need-its-first-service
https://www.viessmann.co.uk/en/heating-advice/boilers/how-long-does-boiler-service-take.html
https://owengibbandsons.co.uk/blog/post/what-happens-during-a-boiler-service-a-step-by-step-guide
