It’s the middle of a quiet night, and suddenly, your peace is shattered by clanking, whistling, or banging sounds emanating from your boiler. It’s worrying when your boiler starts making unusual noises. This guide will help you understand why it’s happening and whether you need to call a professional heating engineer for boiler repairs.


Common Types of Boiler Noises and Their Causes

  1. Whistling Sounds (Kettling): Often caused by limescale build-up in the heat exchanger. This restricts water flow and causes water to boil and steam within the boiler, resembling a kettle’s whistle.
  2. Banging Noises: These are usually due to sudden alterations in water pressure within the boiler’s system. It could be a symptom of air in the system or low water pressure.
  3. Gurgling Sounds: Common in colder months if there is a frozen condensate pipe or air in the radiator.


Should You Call an Engineer?

If your boiler starts making any of these noises, it’s advisable to contact a certified heating engineer to inspect your system. These sounds may indicate minor issues, but they can lead to more significant problems or system failures if not addressed promptly.

Preventive Measures


  • Regular Maintenance: Booking an annual service can help prevent issues that lead to noise. During a service, an engineer can check for any signs of wear and tear, replace faulty components, and clean key parts.
  • System Checks: Make sure your boiler’s pressure is within the recommended range. You can often resolve minor pressure issues yourself by following the manufacturer’s instructions.


Act Now

If you’re in areas such as Middleton on Sea, Elmer, Felpham, Aldwick, Rose Green, or Bognor and your boiler starts making strange noises, don’t hesitate to call us. As your local West Sussex heating engineers, we are well-equipped to handle all your boiler needs efficiently and effectively.

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