If your boiler is making banging or popping noises, then it could be because of kettling. Ketting doesn’t just mean that your boiler makes an unpleasant noise, but also can prevent your home from being heated efficiently and limits the flow of hot water to your taps. Fixing the issue will not only stop your boiler from making a racket, but will also mean that your central heating system works far more efficiently.
What is kettling?
Kettling is when your boiler makes banging or popping noises when turned on. It is commonly caused by a build-up of limescale or corrosion debris on the surfaces of the heat exchanger. This build-up can restrict the flow of water and cause localised boiling, which can cause hot water to turn into steam.
With all of Bristol water being hard or very hard, kettling can be a common problem in older boilers installed in the area.
How can I stop the noise?
As the noise is because of a build-up of debris, the way to stop your boiler banging is to remove any debris that is coating the inside of your boiler. Having your boiler system powerflushed will remove any limescale and debris from your system. The process involves pumping water and cleaning chemicals around your system to clear away any build-up.
Powerflushing will help restore your boiler and radiators so that they perform more efficiently. You can read more about why you should powerflush your central heating system in our blog.
If kettling is happening because of a build-up of corrosion material, then you may want to install a magnetic filter to your system after powerflushing has been carried out. This magnet will catch any loose material before it enters the rest of the system, helping to prevent kettling from occurring. We would recommend that magnetic filters are fitted to all boiler systems to maintain healthy working boiler and reduce the risk of issues.
If you’re concerned about the health of your boiler, then speak to us about our Bristol boiler maintenance service.
Unit 2 Septimus Buildings 
