Should I service my boiler before winter?
An autumn boiler service is the cheapest way to avoid a cold-weather breakdown and keep your warranty valid. Here is why it matters and what a service involves.
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Upfront cost — no obligation Yes — the best time to service your boiler is in early autumn, before you start relying on the heating every day. A boiler that has sat unused all summer is most likely to fail on the first cold morning, and a service catches small faults before they become a no-heating emergency in the middle of winter. It also keeps your manufacturer warranty valid, which usually requires an annual service. This guide explains why autumn is the ideal time and what is included.
Why autumn is the best time to service your boiler
Boilers tend to break down when they are first put under load after months of standing idle, which is exactly what happens on the first cold day of the year. Servicing in September or October means any worn part, low pressure or minor fault is found and fixed before the cold sets in, rather than when you are left without heating. It also avoids the winter rush, when engineers are busiest and call-outs are hardest to book.
Boilers tend to break down when they are first put under load after months of standing idle, which is exactly what happens on the first cold day of the…
What does a boiler service include?
A standard annual service checks that the boiler is burning gas safely and working efficiently. The engineer inspects the burner, heat exchanger and main components, checks the gas pressure and flue, tests the safety devices, and looks for corrosion or leaks. Anything starting to wear is flagged before it fails. At the end you get a record of the service, which is what your manufacturer warranty requires.
A standard annual service checks that the boiler is burning gas safely and working efficiently.
Servicing keeps your warranty valid
Most boiler manufacturers require a documented annual service to keep their warranty in force. Miss a year and you can lose cover, leaving you to pay for repairs that would otherwise be free. Booking a service each autumn keeps the paperwork up to date and the warranty intact. See our boiler service for what is covered.
Most boiler manufacturers require a documented annual service to keep their warranty in force.
Signs your boiler needs attention before winter
Book a service sooner rather than later if you notice the boiler is slow to fire up, the pressure keeps dropping, the radiators are cold at the top or take a long time to warm, or there is any banging, gurgling or a yellow rather than blue flame. If the system is sludged up, a power flush alongside the service can restore heat and efficiency.
Frequently Asked Questions
When should I service my boiler?
Ideally in early autumn, before you start using the heating daily. An annual service before winter catches faults early and keeps your warranty valid.
How often should a boiler be serviced?
Once a year. Most manufacturers require an annual service to keep the warranty valid, and yearly servicing keeps the boiler safe and efficient.
Does servicing my boiler keep the warranty valid?
In most cases, yes. Manufacturers usually require a documented annual service, so keeping up with it each year protects your warranty.
What happens if I do not service my boiler?
The boiler can become less efficient and more likely to break down, small faults go unnoticed, and you may void your manufacturer warranty.
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