My boiler makes funny noises, what does this mean?

Clunking and banging noises are called ‘Kettling’ noises, these noises are usually caused when limescale accumulates on the heat exchanger, this causes the water to boil, steam and expand. This problem can significantly reduce efficiency and may cause further damage.

Whistling noises can also occur, this can be caused by kettling or air can be trapped in the system, releasing the air can resolve the issue, a loss of water pressure or a blockage can also cause whistling.


FloRise try to make the advice on our website as useful and reliable as possible. However the purpose of this advice is provided as useful tips only and should not be taken as professional advice and should not be relied upon as such.

If you are in any doubts as to following any advice we recommend you speak to a qualified FloRise plumber who will under take the work for you. You can contact us locally 01252 917 640 or contact us online for a FREE quote