A clogged or scaled heat exchanger is one of the most common causes of boiler inefficiency, kettling noises, and premature failure. Over time, limescale and sludge build up on the metal surfaces, restricting heat transfer and forcing the boiler to work harder — burning more gas and shortening its...
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The ignition electrode is the small component that creates the spark to light your boiler’s gas burner. When it wears out or cracks, your boiler won’t ignite — leaving you without heating and hot water. The good news is that replacing an ignition electrode is one of the easiest...
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A banging, clunking, or kettling noise from your boiler is never a good sign. It usually means something is wrong inside the heat exchanger, pump, or pipework — and ignoring it can lead to expensive damage or a complete boiler failure. The good news is that most boiler noises are...
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The expansion vessel is one of the most overlooked components in a boiler — but when it fails, it causes a chain reaction of pressure problems that can shut down your entire heating system. If your boiler pressure is rising too high when the heating is on and then...
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Winter is when your boiler works hardest — and when most breakdowns happen. A failed pump, a worn ignition electrode, or a split diaphragm can leave you without heating and hot water when you need them most. The good news is that most winter boiler problems are preventable. Follow this...
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Ordering the wrong boiler spare part is frustrating. You strip the boiler down, wait for delivery, and then realise the electrode or valve doesn’t fit. At Boiler Spares Ltd, we want you to get the right part first time — every time. This guide shows you exactly how to find...
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The F28 error code on a Vaillant boiler is one of the most common — and most frustrating — faults homeowners face. It means your boiler has tried to ignite and failed, leaving you without heating and hot water. The good news is that F28 is often caused by...
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Worcester Bosch is one of the most trusted boiler brands in the UK — but even the best boilers can throw up a fault code when something goes wrong. Understanding what these codes mean can save you an expensive call-out and help you fix the problem with the right...
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When your boiler breaks down, you face a choice: pay a premium for a genuine manufacturer part, or save money with a compatible alternative. At Boiler Spares Ltd, we stock both — so we have no reason to steer you one way or the other. This guide gives you...
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Is your boiler pressure gauge dropping into the red zone? A boiler that keeps losing pressure is one of the most common heating problems in the UK — and in most cases, it’s caused by a faulty part that you can replace yourself or with the help of a...
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