Boiler Service Cost

How Much Is a Boiler Service?

The cost of a boiler service depends on the type of boiler and whether the service is a one-off or an annual service. A one-off service will normally cost more as it is not part of a regular contract. Different companies or installers will offer different types of service cover for your boiler and location within the UK will also impact the cost.

Typically, the average boiler service cost will be around £70 to £120, but this will depend on the particular plan you have in place for your boiler maintenance. Most annual boiler services are part of insurance coverage for your boiler that protects you against unexpected costs should it suffer a fault or breakdown.

The average one-off boiler service price is between £90 to £130 depending on which company you use.

An emergency or last-minute boiler service cost may be a lot higher. This does not cover any repairs or replacement parts that may be needed.

The cost of servicing a boiler will depend on a number of factors; the type of boiler or rather the type of fuel that the boiler runs on such as gas, oil, electricity etc., the age and condition of the boiler and where you live in the UK.

The boiler size will also impact the average boiler service cost, although this does not relate to the boiler's physical size but rather the kilowatt output. Different types of boilers will have different ranges of output, so again the type of fuel powering your boiler will be a significant factor.

Boiler Service Prices

Below are the average boiler service price points depending on the type of fuel that powers them.

Additional Boiler Service Costs

There may be other jobs that you want to carry out at the same time as you are having your boiler serviced.

Power Flushing

Power flushing involves cleaning the pipework and radiators of your central heating system with a special machine and chemicals.

This process removes sludge and debris whilst adding scale inhibitor and sealant to the interior of the heating pipework. The average power flush cost for a central heating system is between £300 to £500.

Radiator Replacement

You may decide to swap your traditional radiators for a more modern or designer look or simply replace a faulty radiator with a new one. Replacing like for like will not generally be very expensive or time-consuming, but if you are changing the radiator's size and style, it will invariably cost more.

The typical new radiator cost will be between £150 and £250, depending on the type of radiator as well as your location within the UK.

Smart Thermostat Installation

Combining a boiler service with installing a new smart thermostat could save money on labour costs. It may also ensure there are no compatibility issues between your boiler and the new thermostat.

On average, the smart thermostat installation cost will be around £450. This will depend on the brand of thermostat you choose, as well as the costs of labour.

Gas Safety Certificate

If you are a landlord, you will need to provide a gas safety certificate to your tenants once a year. The gas safety certificate cost is around £70 to £80.

The check is not just done on a gas boiler but also on any gas appliance, e.g., gas cooker, oven, hob, or fire. It tests the pressure, gas tightness, safety measures and flue flow.

Labour Cost for Boiler Service and Timeframes

The average boiler service cost will mostly be the labour of the plumber or heating engineer who carries it out. Depending on the type, age, condition, and location of the boiler, these costs will vary.

How Much Does a Heating Engineer Charge?

Heating engineer prices will depend on the amount of work that needs to be done, including any additional or optional tasks.

There are several checks that a plumber or heating engineer will carry out as part of a boiler service. These will vary depending on the type of boiler being serviced; for example, the storage tank for an oil boiler will need to be checked as well as the boiler itself.

For a typical gas boiler service, a heating engineer will check that the controls are working correctly (e.g., the ignition switch).

Then the cover will be removed, and the internal components and electrical connections checked. The water and gas pipework will be inspected and checked for signs of leaks or corrosion. Flue gases will be tested, and the gas rate and pressure measured.

All safety devices will be inspected, and a carbon monoxide check done. The heating engineer will normally clean all the boiler parts that need to be cleaned to work properly and efficiently.

All of these checks are part of the servicing and make up the majority of the price you pay for your boiler to be serviced. Any repairs will not be included in the boiler service cost, and anything that needs to be fixed will usually be charged as extra work.

How Long Does a Service Take?

A gas boiler service will take on average an hour if the boiler has been regularly serviced and has no major issues. The gas boiler service cost will include the complete visual inspection as well as testing the boiler and measuring the exhaust gases.

An oil boiler service can take one to two hours as the oil storage vessel also needs to be checked for issues or degradation.

A biomass boiler such as a pellet boiler will take longer to service than a gas boiler as there are more parts to be inspected. This includes the hopper, which is the storage vessel for the pellets which are automatically fed into the boiler.

An LPG boiler service will similarly involve inspecting the storage tank that the LPG is held in to ensure it is safe and fit for purpose. This may take between one to two hours.

Older boilers may take longer if regular services have been missed over time. Carbon build-up on components on an older boiler will take longer to clean.

Repairs are not normally included in the boiler servicing cost. If repairs are needed and parts are not readily at hand, the heating engineer may need to return to carry them out. This will prolong the timeframe for the service to be complete.

What Factors Impact Boiler Service Costs?

There are several considerations that you need to take into account, and which will influence the boiler service cost.

Location

Location within the UK is one of the biggest factors in the boiler service price that you pay. Prices in London and the south-east of the country will be higher due to the higher cost of living, including business expenses such as insurance and fuel costs.

If your property is in a remote or very rural location, you may also be charged more for a heating engineer or plumber to come and service your boiler to cover travel time and fuel.

Size of Boiler

The size of your boiler may also have an impact on what you pay for a service. Different types of gas boilers, combination, system and conventional come in different kilowatt outputs and as such, may require a different approach to servicing.

Type

The type of boiler that you are having serviced will be a cost affecting factor. Different fuel types such as gas, oil, or LPG will need specific servicing.

An electric boiler does not need to be serviced annually as it has fewer moving parts and is powered by a clean source but can be serviced if the warranty requires it.

Age of Boiler

How old your boiler is and how regularly it is serviced will have implications for the cost of servicing. An aged conventional boiler will need more time and attention to be checked, compared to a relatively new combination boiler.

The cost of servicing a boiler that has been neglected in terms of maintenance will probably be higher than average.

Condition of Boiler

The condition of your boiler will potentially affect the cost of getting it serviced. If the boiler has not been regularly maintained, it may develop faults that will need to be rectified during a service.

If extra work or repair is needed or something needs to be fixed, this is not normally included in the cost to service boilers and will be charged as extra.

Ease of Access

All boilers need to be installed in a position which allows ease of access for regular maintenance and servicing.

If this is not the case and the boiler has been installed in a tight or difficult-to-reach space, the heating engineer may charge more for this inconvenience. This may be the case with older conventional boilers.

Type of Service

The boiler servicing cost will depend on whether it is a one-off service or part of an annual contract. Most boiler installers or manufacturers offer an annual insurance contract that includes regular servicing.

The cost of an annual servicing contract will be approximately £70 to £120 on average and is usually paid as a monthly or quarterly fee as part of your bill. A one-off service will cost more, around £100 to £150 on average although this depends on the type of boiler, its age and condition and where you live.

Time of Year

The time of year can impact the cost of servicing a boiler, especially a one-off service. It is typically cheaper to have it done in the summer when the heating engineers and plumbers are less busy.

If you wait until winter, it will be more expensive as this is normally the busiest time of year for both plumbers and heating engineers.

What Does a Boiler Service Entail?

The process of servicing a boiler will depend on the fuel type, gas, oil, or LPG, but some elements will be the same or very similar.

It is not a legal requirement to have your boiler serviced unless you are a landlord. The warranty on your boiler or any insurance cover will normally be contingent on an annual service being carried out.

Servicing Different Types of Boiler

The above breakdown of a boiler service relates to a gas boiler as these tend to be the most common in people's homes.

However, there are other boilers on the market, such as oil, LPG, and biomass. The process for servicing these boilers will be slightly different.

Oil Boiler Service

An oil boiler will also need an annual service, and this should be carried out by an OFTEC registered engineer.OFTEC is the Oil Firing Technical Association which recognises installers who are competent to maintain and service solid fuel systems.

The servicing of an oil boiler will be relatively similar to that of a gas boiler. A visual inspection of the boiler will be undertaken, and then the internal components checked and cleaned. An oil-fired boiler will typically take a couple of hours to service due to the additional cleaning that needs to be done.

The storage tank for the oil is also inspected during a service to ensure it is safe and fit for purpose.

LPG Boiler Service

An LPG boiler is similar to a natural gas boiler and will burn relatively clean. Still, it also needs to be regularly serviced by a qualified Gas Safe engineer for safety reasons and maintenance.

An LPG boiler service will take around an hour, and this should also include an inspection of the tank that the liquified petroleum gas is stored in on your property.

Biomass Boiler Service

A biomass boiler will also need to be serviced regularly, typically once a year as with other kinds of boiler.

An OFTEC engineer should carry out servicing on a biomass boiler, and it will usually take a couple of hours as there is more cleaning to be done than on a gas boiler due to the build-up of ash.

Benefits of Having Your Boiler Serviced

It's a good idea to have your boiler serviced annually for a number of reasons. Of course, safety is the primary concern, but you'll find that there are other significant benefits, so don't be tempted to skip this important job!

Safety

There are a few nasty gases that can be released by a faulty boiler, with the most dangerous candidate being carbon monoxide, a colourless, odourless by-product that can be lethal. Annual servicing will help to eliminate the possibility of faults that can lead to a carbon monoxide leak, and in so doing, potentially save your life.

Lower Running Costs

Everyone loves to save money, and by ensuring your boiler is running efficiently, annual servicing will do exactly that. Service engineers will optimise the operation of your boiler in a number of ways, including removing deposits from inside the system. This will ensure that you're not throwing any money away on preventable inefficiencies.

Fewer Repairs

Major boiler faults can be expensive and hugely inconvenient. Regular servicing will safeguard you from the majority of these problems by catching warning signs early and addressing them before they worsen.

Extended Boiler Lifespan

A side effect of spotting faults early and preventing major problems is that the boiler is likely to remain in good operating condition for longer. Every preventable breakdown could spell the end of your system after all, not to mention cause underlying problems that take effect further down the line.

Warranty Terms

It may be that your boiler's warranty requires you to arrange annual servicing. A valid warranty can save you from some hefty expenses in the event of major problems, and since boiler warranties tend to cover you for a good number of years, it's worth respecting their terms if possible.

As the average new boiler installation cost can range from £2,000 to £3,000, it makes financial sense to factor the annual boiler service price into your budget instead.

Legal Requirements

Quite an important one, this! If you're a landlord, you're legally required to obtain a Gas Safety Certificate for your property, which involves boiler inspection, and it should be made available to the tenant. There is a small fee involved to obtain this certificate, but all the other benefits listed here should take the sting off.

DIY Boiler Service

A boiler service is one of those jobs that is strictly for a qualified professional and should not be attempted as a DIY job. According to the Health & Safety Executive, any work done on a gas boiler must be carried out by a Gas Safe registered engineer.

The same applies to LPG boilers. Oil and biomass boilers should be serviced by an OFTEC heating engineer.

Dangers of DIY Boiler Service

The danger of trying to do a boiler service yourself is that you may miss important issues with the boiler or inadvertently cause a problem which may have serious consequences. Gas boiler emissions include carbon monoxide, an odourless gas that can cause serious health issues or death. Therefore, only a qualified Gas Safe heating engineer should work on your boiler.

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An oil or biomass boiler should be serviced by an OFTEC engineer to ensure that it operates at maximum efficiency and lasts as long as possible. An inefficient oil boiler that is not completely burning the oil supplied to it can produce carbon monoxide, which is a potentially fatal gas that may be leaking into your home. This is why it is important to use a qualified professional to carry out a boiler service.

Although there are no Building Regulations to be followed in order to service your boiler, any new installation should comply with Approved Document J.

Types of Boiler Service

Every boiler should be serviced on a regular basis to keep it working efficiently and effectively. This reduces the chances of breakdown, expensive repairs, and keeps running costs low if the boiler is working at its maximum capacity.

Gas Boiler Service Cost

The majority of homeowners have gas boilers, particularly in urban areas.

A gas boiler service will ensure the boiler is working safely and efficiently. It will also check there are no leaks of carbon monoxide into your home and may highlight any small issues that can be addressed early, potentially saving you money in the long run.

Your boiler's warranty or home insurance cover may require you to have an annual boiler service. If this is not carried out, it could render the warranty or insurance cover invalid. In addition, a qualified Gas Safe engineer will need to carry out the service.

The typical gas boiler service cost is usually between £70 and £120. There are annual contracts available so you could spread your payments out over the year and pay as little as £7 per month for boiler cover.

Oil Boiler Service Cost

An oil boiler is more likely to be found in rural or remote areas where access to piped natural gas is limited.

As with a gas boiler, servicing your oil boiler will check it's safe and working as efficiently as possible. It may also be required as part of a warranty.

The cost of an oil fired boiler service is higher than for a gas boiler as there is more work involved.

The oil boiler service price is typically between £80 to £180, and this will depend on the age, condition, and previous maintenance of the boiler as well as your location in the UK.

The cost of servicing an oil boiler will also usually include checking the tank where oil is stored to ensure this is secure.

LPG Boiler Service Cost

Liquified petroleum gas is an alternative to natural gas for those who are not close to a natural gas pipeline or choose to use LPG to fuel their boiler.

Servicing an LPG boiler will ensure it's working correctly and efficiently. The regular check will help meet any requirements of the warranty or your insurance cover to maintain the boiler properly.

The cost of servicing an LPG boiler is usually more expensive than a natural gas boiler as the service includes the inspection of the LPG storage tank to ensure it is safe and fit for purpose.

The typical LPG boiler service cost will be around £80 to £120. This depends on location, age and condition of the boiler and previous regular maintenance.

Biomass Boiler Service Cost

A biomass boiler runs on non-fossil fuel sources such as wood pellets, wood chips or logs.

Regular servicing of a biomass boiler will ensure it runs efficiently and prevent the system from getting clogged up with ash.

Some of the automatically fed biomass boilers such as pellet boilers have a separate hopper to hold the pellets. This automatic feeding system will need to be inspected and cleaned, adding to the overall annual boiler service cost.

Warranties on any boiler will normally stipulate that a qualified person carries out at least an annual service to remain valid. In addition, if you have received the Renewable Heat Incentive, you are required to carry out a regular service of the biomass boiler in accordance with the manufacturer's instructions.

Biomass boilers eligible for the Renewable Heat Incentive must be serviced by companies recognised by the Microgeneration Certification Scheme. The MCS is a quality assurance scheme supported by the Department for Energy, Security and Net Zero.

The typical biomass boiler servicing cost is around £180 to £200, depending on the type of biomass boiler and your location.

Electric Boiler Service Cost

An electric boiler does not have as many moving parts as a gas, oil, LPG, or biomass boiler and therefore does not require regular servicing.

However, to maintain the boiler in good condition, it is recommended that it is annually checked. An electric boiler service cost would typically be £60 to £80.

Building Regulations for Servicing a Boiler

There are no specific Building Regulations for servicing a boiler. However, Approved Document J of the Building Regulations outlines the requirements for the installation of a new boiler or replacing an existing system.

Planning Permission for Servicing a Boiler

No planning permission is required for servicing a boiler. The same is true for installing or replacing a boiler if all the work is internal unless you live in a listed building.

In this case, you should contact your local authority and confirm what is required before you proceed.

FAQs

How to Find and Hire a Boiler Service Specialist

As the servicing of a boiler cannot be done as a DIY job, it will be necessary to find a boiler service specialist to carry out the work.

Consider the following points when choosing your boiler specialist:

• Your heating engineer should have some form of insurance for working in your home. The most common form is public liability insurance and be able to produce evidence on request.
• Different heating engineers may have different areas of expertise. Ensure you're working with one who has experience with your type of boiler.
• Gas and LPG boilers should only be serviced by Gas Safe registered heating engineers or plumbers. Engineers working on oil or biomass boilers should be registered with OFTEC.
• Accreditation with organisations such as the Chartered Institute of Plumbing and Heating Engineering (CIPHE) is a sign of a reputable and qualified heating engineer or plumber. Other accreditation schemes are equally as valid.

You can check the Gas Safe Register for details of any plumber or heating engineer that you are considering hiring.

Those heating engineers who are registered with OFTEC or as part of the Microgeneration Scheme can be checked through their respective websites.

Sources

https://www.planningportal.co.uk/applications/building-control-applications/building-control/approved-documents/part-j-combustion-appliances-and-fuel-storage-systems/approved-document-j
https://www.planningportal.co.uk/applications/building-control-applications/building-control/approved-documents/part-j-combustion-appliances-and-fuel-storage-systems/approved-document-j
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://www.ofgem.gov.uk/environmental-programmes/domestic-rhi
https://www.ofgem.gov.uk/environmental-and-social-schemes/feed-tariffs-fit
https://www.edfenergy.com/heating/advice/gas-boiler-servicing
https://www.ciphe.org.uk/
https://aphc.co.uk/