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Central Heating Noises

Gurgling Noise

Creaking Noise

  • Hot water causes the central heating pipes to heat up and expand and rub against the holes – are the holes the pipes go through big enough?

Humming Noise

  • From boiler – usually the pump – is it secure? Are the mounting fixings loose?
  • From radiators or piping – could be the pump, the pipes conduct the noise around the central heating system.
  • Turn the pump down – the pump causing rushes of water around the central heating system which can cause humming noises.

Banging Noise

  • Possible cause is air in the central heating system – bleed the radiators.
  • Is there enough water in the central heating system?
  • Tightly fitting pipes – as the water heats up this causes the pipes to heat up and expand.
  • Sticking valve – a ‘light tap’ with a hammer frees a lot of stuck central heating valves.
  • Scaling in the system – add a de-scaler to the central heating system.
  • Pipes not secured – pipes can move when heating up, the banging noise could be the movement of the pipes.


Judge Electrical Limited
15 Mulberry Court, Huntington, York, YO32 9TU
Telephone 01904 764845 (Landline), 07919 033113 Mobile)
Email info@judgeelectrical.co.uk
VAT No. 852917405. Company Number 6359328