10 Of the most common boiler problems

Boiler breakdowns tend to happen at the worst possible time, i.e. during the colder winter months. Most people’s boilers lie dormant during the summer and then as soon as the weather turns cooler they are forced back into life with a bang. This puts a great deal of strain on your central heating system and that’s when problems can arise. Fear not, we’ve put together a guide to the top ten most common boiler faults:

  1. Lack of heating or hot water: This could potentially be caused by broken diaphragms and airlocks, motorised valves failing, low water levels or issues with the thermostat, all of which require a qualified boiler engineer to investigate and resolve.
  2. Banging, whistling or gurgling noises: Strange noises are often caused by air trapped in the central heating system, or it could be due to low water pressure or kettling.
  3. Kettling: This is what happens when limescale builds up on your boiler’s heat exchange, kind of like what happens inside a kettle!
  4. Leaking or dripping: There are a variety of reasons why your boiler might be leaking water. If you notice any water dripping from your boiler it’s best to get an engineer to look at it as soon as possible so that they can determine the cause of the leak and fix it.
  5. The pilot light goes out: If the pilot light in your boiler goes out it could be due to a number of reasons including a draught blowing the light out, a deposit built up in the pilot light, or a broken thermocouple which means the supply to the pilot light is removed.
  6. Loss of pressure: This is most commonly due to a water leak somewhere in the system but it could also mean that a pressure valve needs replacing.
  7. Radiators not heating up: When the pipework in your central heating system corrodes it can lead to a build up of sludge which prevents the hot water from flowing freely. A power flush from Power Flush Master is designed to clear the sludge and get your central heating in tip-top shape.
  8. Frozen condensate pipe: If your condensate pipe becomes frozen during the cold winter months it is recommended that you call a qualified engineer out to thaw it properly.
  9. Problems with the thermostat: If you find that your thermostat is not as accurate as it once was or it is turning the heating on and off when it shouldn’t be then it could be time to invest in a new one.
  10. Boiler switches itself off: If your boiler keeps turning itself off of its own accord it could mean that the water pressure is too low, there’s a problem with the thermostat or a lack of water due to a closed valve or air in the system.
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