Boiler Services: Why They Matter, What’s Involved, and When to Book

Picture of Jamie Gardner - Founder & Electrician at Home Exeter

Jamie Gardner - Founder & Electrician at Home Exeter

Jamie founded Home Exeter in 2019 and has been a working electrician for over a decade. He leads a NICEIC-accredited team serving Exeter and South Devon.

Keeping your boiler running safely and efficiently is one of those jobs it’s easy to put off – until it lets you down. Our Gas Safe registered engineers service boilers for homes across Exeter and the surrounding Devon area, catching small faults before they become expensive breakdowns. Here’s why an annual service matters, what’s involved, and when to book.

What Is a Boiler Service?

A boiler service is a routine check-up carried out by a qualified Gas Safe engineer to ensure your boiler is working safely, efficiently and reliably.

Much like a car service, it is designed to catch problems early, prevent breakdowns and keep everything running smoothly. Most boiler manufacturers recommend servicing your boiler annually.

If your boiler is out of warranty, seems to be working fine, or has not had any issues, it might be tempting to skip your annual service. But delaying it can cost you far more in the long run.

Why Is Boiler Servicing So Important?

Whether you rely on your boiler for heating, hot water or both, it is one of the most important appliances in your home. A professional boiler service helps to:

1. Keep Your Home Safe

Boilers that are not properly maintained can leak carbon monoxide, a colourless, odourless gas that is deadly in high levels.

A service includes checks for carbon monoxide leaks, ventilation and flue safety, ensuring your boiler is operating safely.

2. Avoid Breakdowns and Expensive Repairs

Most boiler problems start small and grow over time. During a service, your engineer will spot signs of wear, corrosion, or build-up that could lead to a breakdown.

Catching these early prevents emergencies and expensive repair bills later.

3. Improve Energy Efficiency

An annual service keeps your boiler running as efficiently as possible. That means:

  • Less fuel used
  • Lower energy bills
  • A reduced carbon footprint

This is especially important if you’re trying to keep household costs down or run a more sustainable home.

4. Prolong Your Boiler’s Lifespan

Regular servicing can add years to your boiler’s life. Boilers are a big investment, and a service helps protect that investment by reducing wear and tear.

5. Protect Your Warranty

Most boiler warranties (especially from brands like Worcester Bosch, Vaillant or Ideal) require annual servicing by a Gas Safe engineer. If you skip a service, you may void the warranty, even if the fault was unrelated.

What’s Included in a Boiler Service?

A boiler service should be carried out by a fully qualified Gas Safe registered engineer. The appointment usually takes between 30–60 minutes, depending on the make and model.

Here’s what to expect during a standard service:

  • Visual inspection: The engineer will check the boiler and surrounding pipework for leaks, corrosion, damage or any signs of wear.
  • Control and component checks: The boiler’s controls, safety devices and key components are tested to ensure they work correctly.
  • Flue and ventilation inspection: The flue (the pipe that vents exhaust gases) will be checked to make sure it is clear and safely fitted.
  • Gas pressure and flow test: Ensures your boiler is getting the right gas supply and is burning it efficiently.
  • Cleaning: Some internal parts (like the heat exchanger or burner) may be cleaned if needed to improve performance.
  • Carbon monoxide test: The engineer will check for safe combustion and confirm there are no dangerous emissions.
  • Service record: You will receive a written report confirming what was done and any recommended follow-up work.

If your boiler is older or shows signs of issues, the engineer may advise additional work or a safety shutdown if there’s a risk.

How Often Should You Service a Boiler?

You should have your boiler serviced once a year. The best time to do it is in late summer or early autumn, before the heating season begins.

This helps ensure everything is working before you start relying on it daily. It also means you’re less likely to be stuck without heat on a freezing January morning.

How Much Does a Boiler Service Cost in the UK?

On average, a boiler service costs between £70 and £120, depending on:

  • Your location
  • The type and age of the boiler
  • Whether it’s a one-off service or part of a care plan

At Home Exeter, we offer transparent, fixed-price boiler servicing with no hidden fees, so you always know what to expect. For the most accurate price based on your system, you can get a fast quote using the link below.

→ Get Your Instant Boiler Quote Here

Signs Your Boiler Needs a Service (or a Repair)

Even if your boiler seems fine, it still needs regular servicing. But there are some clear warning signs that should prompt you to book sooner:

  • Unusual noises: banging, gurgling or whistling sounds
  • Leaking water around the boiler or pipework
  • Low boiler pressure that keeps dropping
  • Radiators taking ages to heat up
  • Pilot light going out repeatedly (older models)
  • Strange smells or error codes
  • High energy bills without a clear reason

These symptoms can be caused by a range of issues, and a service will help diagnose and resolve them before they get worse.

Can I Service My Own Boiler?

No. You must be Gas Safe registered to carry out any kind of gas boiler servicing, repair or installation in the UK.

Attempting to service your own boiler is dangerous and illegal. It can lead to gas leaks, carbon monoxide poisoning, and invalidated home insurance.

Always ask to see your engineer’s Gas Safe ID before work begins.

Boiler Servicing for Landlords

If you’re a landlord, you are legally required to:

  • Get an annual Gas Safety Certificate (CP12) for each property
  • Ensure all gas appliances, including the boiler, are safe to use
  • Keep a record of the check and give a copy to tenants within 28 days

A boiler service is not the same as a gas safety check, but many landlords choose to do both together for peace of mind.

Home Exeter offers convenient landlord packages that cover servicing, safety checks, and repairs. Contact us if you manage rental properties and want a trusted, responsive partner.

FAQs About Boiler Servicing

How long does a boiler service take?
Usually around 45 minutes, depending on your boiler model and condition.

Do I need a service if my boiler is brand new?
Yes, even in the first year, an annual service is often required to keep your warranty valid.

Can I get my boiler serviced in summer?
Yes, and it is often easier to book. You will also avoid last-minute winter emergencies.

Is a boiler service the same as a repair?
No. A service is preventative. If your boiler is already faulty, you will likely need a diagnostic visit or repair.

What happens if I don’t service my boiler?
You risk breakdowns, safety issues, reduced efficiency, and a voided warranty.

Why Choose Home Exeter for Your Boiler Service?

At Home Exeter, we pride ourselves on offering:

  • Trusted local engineers
  • Gas Safe registered service
  • Fair pricing with no surprises
  • Fast response times
  • Friendly, professional support

Whether you need a one-off boiler service or want ongoing care, we can help.

Book today and keep your boiler safe, efficient and ready for winter.

→ Click here to get your boiler service quote in 60 seconds

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