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Common Reasons Why a Boiler Cuts Out in Winter (And How to Fix Them)

Winter is fast approaching, the cold temperatures are already here, meaning that you have to put the heating on earlier and earlier in the day. Figures already show that cold homes in Britain are a significant national health problem. This is why it is important to be proactive and take steps to ensure you can stay warm and comfortable throughout the long winter months. Of course, the most important place to start is your boiler.

During these months, your boiler goes into overtime, which is also why this is the time where your boiler is most likely to cut out when you need it the most. While this is a common problem, it is far from inevitable. Read on to find out the most common reasons for boiler breakdown and how you can fix them quickly. 

1. Frozen Condensate Pipe

If you are thinking “my boiler keeps cutting out and I don’t know why”, your first port of call should be the condensate pipe. The condensate pipe transports condensation from the inside of your boiler to the outside, getting rid of it so that your boiler can function. However, during colder months, this condensate can freeze in the pipe, causing a blockage.

This will cause condensation to flow back into the boiler, eventually causing an overload and leading to the boiler cutting out. You can usually thaw out a frozen condensate pipe by yourself,  but it is always advised to get advice or help from a professional plumber.

2. Boiler Leak

If your heating boiler keeps cutting out, it’s possible that a leak could be the culprit. The most common reason for a leak is high pressure within the boiler, so start by checking the pressure. In addition, corrosion or worn-out seals will also cause a leak. If you do suspect that a leak is the cause of your boiler cutting out, the best thing to do is call a professional repair service immediately. You may even need to replace your entire boiler. 

3. Heating System Blockage

Especially in the colder months, heating system blockages can form, which is why the boiler cuts out before the temperature is reached in many cases. This can happen due to a buildup of sludge, rust, or limescale. A professional can usually remove a blockage quickly by conducting a chemical flush. In the future, you can install a magnetic filter to reduce further blockages. 

4. A Faulty Pump

Any efficient heating system depends on a fully-functional water pump. If your pump starts to fail, water can no longer be pumped around the boiler system and blockages will quickly start to build up. This is especially common in older boiler systems. It is possible that a simple hot flush of the pump will fix the problem. However, if the pump is found to be irreparably damaged, you will need to shell out for a replacement, which can cost up to £300. 

Instant, Affordable Boiler Services in Kent and surrounding areas

If you face an unexpected boiler breakdown and need fast, affordable repair services, you have come to the right place. We are committed to providing top-tier plumbing and heating services to residents of Kent and the surrounding areas. We offer fully transparent pricing and service with a smile. So give us a call today for a free quote. 

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