Vokera Compact Combi Boiler making strange noises

Hi All,

I have purchased my Vokera compact combi boiler two years ago. It worked well but now from last three or four days, it is generating some strange sounds whenever I use it. These sounds are quite loud however; the volume goes down after few minutes. I just wanted to know, is it something serious or it is normal for the boiler to produce these sounds.

Thanks for your kind suggestions


Hello William, this issue is termed as kettling. With respect to kettling, popping or banging noises are quite common. It is normally caused by the limescale buildup & even corrosion remains becoming overheated onto the inner surfaces of the boiler’s heat exchanger thus, leading to limited boiling. I would advise descaling and power flushing the boiler