TL;DR — Central Heating Service Cost At A Glance
- A central heating service typically costs £70 – £150 inc VAT, covering a full system check rather than the boiler alone.
- London and the South East add roughly £20 – £40 to the standard price.
- A full service checks the boiler, radiators, pump, controls, thermostat and system pressure — more thorough than a basic boiler service.
- Gas work must be carried out by a Gas Safe registered engineer, and the check keeps the boiler warranty valid.
- Prices rise if the system needs extra cleaning, radiator balancing or a power flush — these are quoted separately.
- Booking the service in spring or summer avoids the autumn rush and keeps the system ready for winter.
Book a central heating service with a Gas Safe registered engineer — check prices and book online or call to arrange a convenient slot.
How Much Does A Central Heating Service Cost In 2026?
A central heating service in the UK costs £70 – £150 inc VAT, with most households paying around £90 – £120. In London and the South East, add roughly £20 – £40 to reflect higher labour rates. A full service usually takes 45–90 minutes, depending on the size of the system and how well it has been maintained.
The difference between a central heating service and a straightforward boiler service is scope. A boiler service focuses on the boiler and its safety controls. A central heating service takes in the whole system — the boiler, radiators, pump, valves, thermostat, controls and system pressure — so the engineer can spot cold spots, sludge, a failing pump or a pressure fault before it becomes a winter breakdown.
Price mainly reflects your system type and size, your location, and whether the visit is a standalone booking or part of a cover plan. A larger home with more radiators takes longer to check and balance, which nudges the price towards the upper end.
Here is what a central heating service typically costs across the UK in 2026:
| How you book | Rest of UK | London & South East |
|---|---|---|
| Standard central heating service | £70 – £120 | £90 – £150 |
| Service + landlord Gas Safety certificate (CP12) | £100 – £160 | £120 – £190 |
| Service included in a heating cover plan | often bundled into the monthly premium | often bundled into the monthly premium |
Figures include VAT and reflect 2026 market rates. Your exact price depends on the system and postcode — get a fixed quote here.
Central Heating Service Cost By System Type
The type of system and the number of radiators both affect how long a service takes, and therefore the price. These are typical figures for a system in reasonable condition.
| System | Rest of UK | London & South East |
|---|---|---|
| Gas combi boiler system (small home) | £70 – £110 | £90 – £130 |
| Gas system/heat-only with cylinder | £80 – £130 | £100 – £150 |
| Larger home (8+ radiators) | £100 – £150 | £120 – £180 |
| Oil-fired heating system | £90 – £150 | £110 – £180 |
Prices assume a system in working order. A neglected system that needs cleaning, radiator balancing or a power flush will cost more, quoted separately from the service.
What Affects The Cost Of A Central Heating Service?
A central heating service is fairly standardised, but a few things move the price.
1. System Type And Fuel
Gas combi systems are quickest to service. Systems with a hot water cylinder involve extra checks, and oil-fired heating costs a little more because it needs an OFTEC registered engineer and additional burner checks.
2. Number Of Radiators And System Size
A one-bedroom flat with three radiators is far quicker than a four-bedroom house with a dozen. More radiators mean more to inspect, bleed and balance, which adds time and cost.
3. Your Location
London and the South East run higher on labour, adding roughly £20 – £40 over the rest of the UK for the same work.
4. System Condition
A well-maintained system is quick to check. One that is full of sludge, has cold radiators or a struggling pump takes longer, and any remedial work — cleaning, balancing or a power flush — is quoted on top of the service.
5. Standalone Service Or Cover Plan
A one-off service is a fixed fee. If you hold boiler and heating cover, an annual service is often included in the monthly premium, so there is no separate charge.
What's Included — And What's Not
A central heating service usually includes:
- A full inspection of the boiler and its safety controls
- Checking the flue and combustion on gas boilers (a flue gas analyser reading)
- Testing the pump, valves and expansion vessel
- Checking system and boiler pressure
- Inspecting radiators for cold spots and bleeding where needed
- Testing the thermostat and heating controls
- A written service record for your warranty
Usually not included:
- Repairs or replacement parts if a fault is found (see the boiler repair cost guide)
- A power flush or chemical system clean (see the power flush cost guide)
- Radiator replacement or new valves
- A new thermostat or controls upgrade
If the engineer finds a problem during the service, ask for a written quote before agreeing to any repair.
Can You Do It Yourself?
No — not the service itself. A central heating service involves testing the gas boiler's combustion, pressure and safety devices, which must be done by a Gas Safe registered engineer (OFTEC for oil). It is illegal and unsafe for a homeowner to work on the gas side of the system.
What you can do between services is basic upkeep that keeps the system healthy. Bleed radiators when they have cold spots at the top, keep an eye on the boiler pressure gauge and top up the system if it drops below the normal range, and watch for warning signs such as noisy pipes, slow-to-warm radiators or a boiler that keeps losing pressure. Anything beyond that — and certainly anything touching the gas supply — belongs to a qualified engineer.
How To Save Money On A Central Heating Service
- Book in spring or summer — engineers are quieter than in the autumn rush, and the system is ready before the cold sets in.
- Bundle the service with a landlord Gas Safety check if you let the property, rather than paying for two visits.
- Consider a heating cover plan if you want the annual service rolled into a predictable monthly cost.
- Stay on schedule — an annual service keeps the boiler warranty valid and prevents small faults becoming expensive repairs.
- Keep your service records so the warranty stays intact and the system's history is easy to prove when you sell.
- Get a fixed price up front so there are no surprises on the day.
How To Hire A Good Heating Engineer
Check that the engineer is on the Gas Safe Register for gas work (OFTEC for oil) — ask to see the ID card and verify the number on the official register. Confirm they are insured, that the service follows a proper checklist covering the whole system rather than just the boiler, and that you receive a written service record. Fixed, transparent pricing avoids add-ons appearing at the end.
With Fantastic Services, you get Gas Safe registered engineers, upfront pricing and easy online booking — arrange a full system service, or a service plus landlord certificate, in a few clicks.
Frequently Asked Questions
How Much Does A Central Heating Service Cost In 2026?
A central heating service costs £70 – £150 inc VAT, with most people paying £90 – £120. London and the South East add roughly £20 – £40. Larger systems with more radiators, and oil-fired systems, sit towards the upper end.
What Is The Difference Between A Boiler Service And A Central Heating Service?
A boiler service checks the boiler and its safety controls. A central heating service is broader, covering the boiler plus radiators, the pump, valves, thermostat, controls and system pressure — the whole heating system rather than one component.
How Often Should Central Heating Be Serviced?
Once a year is the standard advice. An annual service keeps the boiler warranty valid, catches faults early and helps the system run efficiently through winter. Landlords also need an annual Gas Safety check on gas appliances.
Does A Central Heating Service Have To Be Done By A Gas Safe Engineer?
Yes, for gas systems. Any work on a gas appliance must be carried out by a Gas Safe registered engineer. Oil-fired systems should be serviced by an OFTEC registered engineer.
How Long Does A Central Heating Service Take?
A full central heating service usually takes 45–90 minutes, depending on the number of radiators and the condition of the system. A larger home or a neglected system takes longer.
Is A Power Flush Included In A Service?
No. A power flush is a separate job that clears sludge from the system, costing £400 – £700. A service may reveal that a flush is needed, but the flush itself is quoted on top.
Does An Annual Service Reduce Heating Bills?
Often, yes. A well-serviced system with clean radiators and a healthy pump runs more efficiently and is less prone to breakdowns, which can lower running costs and help you avoid a larger repair or early replacement bill.
