Central Heating Noises

Gurgling Noise

· A sign of trapped air – bleed the radiators.

· Turn the pump pressure down – the pump causing rushes of water around the central heating system.

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.

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