How Often Should You Service Your Boiler?
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The Short Answer: Once a Year
Most boiler manufacturers recommend an annual service, and for good reason. A yearly check-up catches small issues — a worn seal, a dropping efficiency, a build-up of debris — before they turn into a breakdown in the middle of winter, or worse, a safety hazard.
Why Annual Servicing Matters
A boiler service isn't just about avoiding a costly repair bill. It also affects your safety, your warranty, and how much you're paying to heat your home every month.
Tips:Pro Tip: Book your service in late summer or early autumn, before the cold weather hits and engineers get booked solid. It also means any issues are fixed before you actually need your heating.
What Happens If You Skip It?
Warranty Risk
Most boiler warranties are conditional on an annual service by a qualified engineer, carried out every 12 months without a gap. Missing even one year can void your warranty entirely, leaving you to cover the full cost of any future repair or replacement.
Safety Risk
An unserviced boiler is one of the main causes of carbon monoxide leaks in UK homes. A service includes checks for this exact risk, along with confirming your flue, seals, and gas connections are all working as they should.
Efficiency and Cost
A neglected boiler has to work harder to produce the same amount of heat, which shows up directly on your energy bills. Regular servicing keeps it running at its intended efficiency.
Landlords: This One Isn't Optional
If you rent out a property, an annual gas safety check by a Gas Safe registered engineer is a legal requirement, not just good practice. You'll need a valid Gas Safety Record (CP12) for the property, renewed every year, and a copy provided to your tenants.
What's Checked in a Landlord Gas Safety Check
- All gas appliances, pipework, and flues in the property
- Boiler operating pressure and safety devices
- Ventilation and flue performance
- Overall condition and any visible faults
What Does a Standard Boiler Service Include?
- Visual inspection of the boiler casing, flue, and surrounding pipework for damage or corrosion.
- Component checks, including seals, electrical connections, and safety devices.
- Pressure and flow testing to confirm the system is operating within the manufacturer's guidelines.
- Flue gas analysis to check the boiler is burning gas cleanly and safely.
- Cleaning of key components where needed, such as the burner and heat exchanger.
An annual service is one of the cheapest ways to protect your home, your warranty, and your family — and it usually takes less than an hour.
Due (or overdue) for a boiler service? Book with our Gas Safe registered engineers and we'll have you covered before the weather turns.
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