NK Gas Services
Prices range from £80 to £120 depending on where you live and who you use. Here's what you're actually paying for — and why skipping it is a false economy.
So, how much does a boiler service cost? In most parts of the UK you can expect to pay between £80 and £120 for a standard annual boiler service. The exact price depends on your location, the type of boiler, and which engineer you use. Here in the West Midlands — covering Wolverhampton, Walsall, Cannock, and surrounding areas — NK Gas Services charges a fixed £90 with no hidden fees. In this guide I'll break down what you get for that money, why servicing matters, and what happens if you put it off.
Nationally, boiler service prices sit in the £80–£120 range for most domestic properties. London engineers tend to charge at the higher end — sometimes £130 or more. Outside the capital, prices are generally more competitive. The Midlands and North typically fall in the £80–£100 bracket.
Some factors that influence the price include:
Be cautious of unusually cheap quotes. A £40 or £50 service often means a quick visual check rather than a proper, thorough inspection. You want someone who is actually going to open the boiler up, check the heat exchanger, and test everything properly. See our full pricing page for a clear breakdown of what NK Gas charges and why.
A proper boiler service is more than a quick look and a tick on a form. A Gas Safe engineer should carry out a thorough inspection of the entire system. Here's what our annual boiler service includes:
At the end of the visit you'll receive a service report detailing the condition of the boiler. If anything needs attention, we'll tell you clearly and give you a quote before doing anything extra.
Most boiler manufacturers recommend — and many require — an annual service to keep the warranty valid. Miss a service and you may find the warranty voided the moment something goes wrong. That could turn a free repair into a bill of several hundred pounds.
Beyond the warranty, there are three compelling reasons to service your boiler every year:
Safety. A boiler that hasn't been serviced can develop faults that go unnoticed — particularly around the heat exchanger and flue. A cracked heat exchanger can allow carbon monoxide to enter your home. CO is odourless and colourless, and it kills. An annual service catches these problems early.
Efficiency. A dirty burner or sooted heat exchanger makes your boiler work harder to produce the same amount of heat. That means higher gas bills. A well-maintained boiler runs more efficiently — and over a full heating season, the savings can comfortably cover the cost of the service.
Reliability. Servicing is about prevention, not just cure. Small issues — a worn seal, a slightly off gas pressure, a beginning-of-life ignition problem — are cheap and quick to fix when caught early. Left alone, they often lead to a full breakdown, usually on the coldest night of the year.
If you're a landlord in Wolverhampton, Walsall, or elsewhere in the West Midlands, you're legally required to have your rental property's gas appliances checked annually. That's where a gas safety certificate (CP12) comes in — we can carry out the service and issue the CP12 at the same visit.
People often put off a boiler service because the boiler seems to be working fine. That's understandable — but it's a bit like skipping a car MOT because the engine sounds OK. Problems build up quietly.
Here's what can happen over time without regular servicing:
A £90 service once a year is genuinely good value when you consider what it protects against. Most boiler breakdowns we attend to in the West Midlands could have been prevented — or at least caught much earlier — with regular servicing.
Generally, no — the service itself costs the same regardless of how old your boiler is. What changes with age is the likelihood of finding things that need attention during the service.
Boilers under 5 years old that have been well maintained are usually serviced quickly and cleanly. Boilers over 10 years old are more likely to have worn parts, and the engineer may recommend replacements. These are quoted separately — the service fee itself stays fixed at £90.
If your boiler is over 12–15 years old, a service is still worth doing, but it's also a good time to start thinking about whether a new installation makes more sense. A modern A-rated condensing boiler can be significantly cheaper to run. We're happy to give you an honest assessment when we're in — no hard sell, just practical advice.
We keep our pricing simple. An annual boiler service with NK Gas is £90 — fixed, no hidden extras. That price covers the full inspection described above, the service report, and honest advice on anything we find.
We're Gas Safe registered (number 568305) and have over 147 five-star Google reviews from customers across Wolverhampton, Walsall, Cannock, Dudley, Birmingham, and the wider West Midlands. We're available 7 days a week and can often accommodate same-day or next-day appointments.
Booking is straightforward — call us, send a WhatsApp, or drop us an email and we'll arrange a time that suits you. There's no complicated online form or call centre to navigate. You deal directly with us.
Covering Wolverhampton, Walsall, Cannock and across the West Midlands. Same-day service available, 7 days a week. Gas Safe #568305.
Annual service £90 · CP12 from £65 · 147+ five-star reviews