How much does a boiler service cost in the UK? (2026)
Verified UK boiler service prices for 2026 by fuel type and region, what a Gas Safe engineer should actually check, and how to tell a fair service quote from an upsell.
A boiler service in the UK in 2026 typically costs £85 to £120 for a gas boiler, with a national average around £100. The price buys the annual inspection that keeps a boiler safe, efficient, and warranty-valid. What it does not buy is parts, which is where a service quote can quietly turn into a repair bill, so it pays to know what the visit alone should cost.
Quick answer
UK boiler service in 2026: a gas boiler service is £85-£120 (average £100), electric £75-£110, and LPG or oil £90-£125. London and the South-East run about 10% above average; Scotland and the North sit below. Parts are extra. Gas boilers must be serviced by a Gas Safe registered engineer.
How to read this guide#
Two kinds of figures appear below:
- Headline price ranges (cost by fuel type and region): cross-referenced against MyJobQuote's UK 2026 boiler service guide. Source listed at the bottom.
- Practical guidance (what is checked, cover plans, red flags): standard UK practice and safety requirements, for context rather than figure-by-figure verification.
Headline ranges (verified)#
Annual boiler service by fuel type, UK 2026:
| Service | Typical duration | Typical cost |
|---|---|---|
| Gas boiler | 1 – 1.5 hours | £85 – £120 |
| Electric boiler | 1.5 – 2 hours | £75 – £110 |
| LPG boiler | 1.5 – 2 hours | £90 – £120 |
| Oil boiler | 1.5 – 2 hours | £90 – £125 |
By region:
| Region | Typical cost | vs UK average |
|---|---|---|
| London & South-East | £100 – £120 | +10% |
| Midlands | £85 – £110 | average |
| North England | £80 – £105 | -10% |
| Wales | £80 – £105 | -10% |
| Scotland | £75 – £100 | -15% |
These cover the service visit only. Replacement parts (heat exchanger, gas valve, pump, thermistor, diverter valve) are quoted and charged separately.
Practical guidance (industry standard)#
Gas Safe is the non-negotiable#
Only a Gas Safe registered engineer may legally service a gas boiler. Before any work starts, check the engineer on the Gas Safe Register and confirm their ID card covers boilers. Oil boilers are usually serviced by OFTEC-registered engineers. An unregistered person working on a gas appliance is breaking the law, and it is the one red flag that should end the conversation.
What a real service includes#
A full service is not a five-minute glance. The engineer should:
- Inspect the boiler, controls, and pipework for corrosion or leaks.
- Check gas pressure and flow against the manufacturer's figures.
- Test the flue and combustion with a flue gas analyser.
- Inspect seals, the heat exchanger, and the burner.
- Confirm safety devices and the pressure relief valve work.
- Leave a written service record.
If there is no flue gas analyser and no paperwork, you have not had a full service, whatever the invoice says.
Cover plan or one-off service#
- One-off service (£85-£120/year): cheapest for a newer boiler under warranty, where the annual service is mainly about keeping cover valid.
- Monthly cover plan (£8-£20/month): bundles the service with breakdown repairs and callouts. Worth considering on an older boiler more likely to fail, but over a year it costs more than a single service if nothing breaks.
Many manufacturer warranties are void if the boiler is not serviced annually, so the service often pays for itself by protecting a multi-year guarantee.
What affects the price#
- Region. London and the South-East run about 10% above average; Scotland and the North below.
- Fuel. Gas is quickest and cheapest; oil and LPG take longer.
- Access and condition. A boiler in an awkward loft or a heavily scaled system takes longer.
- Timing. Out-of-hours visits carry a premium.
Service inside a new-boiler or heating quote#
When you have a new boiler fitted, the first year's service and the warranty registration should be clear in the quote. For judging a replacement price, see is my new boiler quote fair and the new boiler cost guide; for whole-system work, the central heating cost guide.
Red flags in a boiler service quote#
- Not Gas Safe registered. End the job. This is non-negotiable for gas.
- No flue gas analysis or written record. Then it was not a full service.
- Parts bundled invisibly into the service price. The service visit and any parts should be separate lines.
- Multiple parts "needed" on a working boiler. Get a second opinion before agreeing to replacements found during a routine service.
- A service price far above £120 with no region, brand, or fuel reason given.
Comparing your quote#
If a boiler service or new-boiler install is in a quote, check the service visit is priced separately from parts and that a Gas Safe engineer is named. The faster way is to paste or upload your quote into Check the Quote: we check every line against current UK rates for your postcode, flag anything above the fair range, and tell you what is missing from the scope. Your first check is free.
Got a quote you want checked?
Paste any UK contractor quote and Check the Quote compares every line item against current market rates, flags missing scope, and runs a Companies House check on the contractor. Free on your first project.
Frequently asked questions
- How much does a boiler service cost in the UK in 2026?
- A one-off annual gas boiler service is typically £85-£120, with a UK average around £100 (MyJobQuote, 2026). Electric boilers are £75-£110, and LPG or oil boilers £90-£125. The price covers the inspection visit only; any parts the engineer finds need replacing are quoted and charged separately.
- Who is legally allowed to service a gas boiler?
- Only a Gas Safe registered engineer may legally work on a gas boiler in the UK. Always check the engineer is on the Gas Safe Register and that their ID card covers boiler work before they start. Servicing a gas appliance without registration is illegal and unsafe. Oil boilers are typically serviced by OFTEC-registered engineers.
- What should be included in a boiler service?
- A proper service includes a visual inspection, checking the gas pressure and flow, testing the flue and combustion with a flue gas analyser, checking for leaks and corrosion, inspecting seals and the heat exchanger, and confirming safety devices work. The engineer should leave a written service record. A five-minute glance with no flue test is not a full service.
- Is an annual cover plan cheaper than a one-off service?
- It depends on use. A monthly boiler cover plan (typically £8-£20 a month) bundles the annual service with breakdown repairs, so it can be worth it on an older boiler likely to need callouts. For a newer boiler under warranty, a one-off £85-£120 service each year is usually cheaper, and many warranties only require the annual service to stay valid.
- Why is my boiler service quote much higher than £100?
- Either it bundles parts and repairs into the service price, or it is an out-of-hours or premium-brand rate. A fair quote separates the service visit from any parts. If a quote jumps because the engineer "found" several parts needing replacement on a working boiler, get a second opinion before agreeing.