How much does a boiler service cost?
A boiler service cost depends on the boiler type, its condition and the checks needed, so prices vary between gas and oil systems. We explain what the service includes and provide a written quotation for any additional work before it goes ahead.
The amount you pay depends mainly on the boiler’s fuel, type, access and condition. A straightforward annual service is priced differently from an oil boiler service, a service with additional safety checks, or a visit where faults need investigating.
What the service price normally covers
- Identifying the boiler and checking its installation against the manufacturer’s requirements.
- Inspecting accessible components for wear, damage, leaks or unsafe operation.
- Checking combustion and flue performance on a gas boiler.
- Checking the burner, combustion settings and oil supply on an oil-fired boiler.
- Cleaning serviceable components where this is part of the manufacturer’s instructions.
- Checking operating pressure, controls, safety devices and condensate arrangements where applicable.
- Running the boiler and confirming that it operates correctly at the end of the visit.
- Recording the service findings and explaining anything that needs attention.
A gas boiler must be serviced by a Gas Safe registered engineer. An oil-fired boiler needs an engineer registered with OFTEC, which is particularly important on homes that are not connected to the gas network. The fuel type changes both the checks involved and the time needed to complete them.
Why prices differ between boilers
A modern gas boiler with clear access may need fewer checks than an older boiler in a tight cupboard. A regular boiler with a separate cylinder and controls may involve more of the heating system than a combi boiler. An oil boiler also has components that do not appear on a gas appliance, including the burner and oil supply arrangements.
The location can affect the work too. If the flue, boiler or condensate pipe is difficult to inspect, we may need to allow more time. An appliance in a loft, outbuilding or older property can require more careful access and additional checks. We will explain any difference before carrying out work beyond the agreed service.
A service is not the same as a repair
A service checks condition, safety and operation. It does not include every repair that the engineer might identify. If we find a worn component, a blocked condensate route, a damaged flue or another fault, we explain what it means and what needs to happen next.
Parts, remedial work and further fault-finding are normally separate from the service itself. You can then decide whether to proceed rather than finding that extra work has been added without explanation. If the boiler cannot be operated safely, we will tell you and explain the next steps.
Does a boiler service include a gas safety certificate?
Not automatically. A service records the condition and operation of the boiler. A landlord gas safety record is a separate legal inspection covering the gas appliances and pipework within the rented property. Tell us what documentation you need when arranging the visit, so we can allow for the correct checks and paperwork.
How to compare boiler service prices
- Check whether the price is for a gas or oil appliance.
- Confirm whether the visit covers one boiler or additional heating equipment.
- Ask whether the service record is included.
- Check how faults, cleaning, parts and follow-up work are charged.
- For a rented property, confirm whether the required landlord safety record is included.
The cheapest advertised price may not describe the same inspection. A service that excludes important checks can leave you comparing different amounts of work. A clear quotation should state what we will inspect and what would be charged separately.
We provide the cost in writing before work starts. If the engineer finds something outside the agreed service, you will know what it is, why it matters and what the additional work would cost before deciding. This keeps the annual service separate from an unexpected repair bill.
For an older boiler, regular servicing can also show when repeated repairs or unavailable parts are becoming a practical concern. That does not automatically mean replacement is needed. We explain the condition of the existing appliance first, so you can compare continued maintenance with a planned new boiler installation on the facts of your heating system.
If your boiler is still under a manufacturer’s warranty, check its service conditions before booking. Some warranties require regular servicing and suitable records. Keeping the service paperwork can help show that the required maintenance was carried out if a fault develops later.
For an older boiler, the service record is useful for a different reason. It shows whether the appliance is continuing to operate normally or developing repeated faults. That information can help you plan replacement costs instead of making the decision during a breakdown.
