Boiler noises to look out for

Boilers are incredibly important to keep our homes at a comfortable temperature and to provide us with warm running water. As a piece of equipment it is normal for issues to arise with your heating at one point or another. You can help to alleviate issues arising by using a Cheltenham Boiler Servicing company to come in once a year and check your system. Blu Fish Cheltenham can help provide you with an annual service and they can also repair any problems that are identified. When it comes to looking for issues within your heating systems, these can sometimes be made obvious with the arrival of strange noises.


In the event that your central heating makes loud rattling noises, that usually signifies the presence of loose objects which could be vibrating or shaking against one another, but if that’s not the case, there are a few more reasons why this might be happening. There is a possibility of boilers making rattling noises when there is air trapped in the pipes. It is possible to remove the excess air from your system by bleeding your radiators, and as this is a simple task. It is important to only bleed your radiators when they are cool and never whilst they are running.

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A humming noise can sometimes be heard coming from electric water heaters, and the problem can be easily fixed by tightening the heating element on the heater. The rumbling noise that may be heard coming from a hot water heater can also be caused by bits of sediment, rust or limescale that have heated up and expanded within the cylinder.

There are also times when rumbling noises are caused by extremely high pressures. The valves inside your heating system can hum or whine if the incoming water supply from the main line has too much pressure. This is why it’s important to check if the valves inside your heating system need to be adjusted.

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You may have noticed that your boiler makes a high-pitched whistling noise, almost like an old-fashioned kettle, when it is in use. This is known as kettling and the most likely cause is the build up of limescale in the system.