Boilers

What is sludge made from?

Sludge is a buildup of undissolved components in the water of your heating system. 

The main component, magnetite, is formed from iron rust when water and oxygen interact with steel pipes and radiators, but it also contains limescale – deposits that form from hard water.


Dirt and general system grime are also found within central heating sludge. Left untreated, sludge and all the various components it contains causes poor water quality and ultimately, could damage your boiler. 


60% of boiler breakdowns are caused by sludge in the system. Having a magnetic filter fitted on your boiler captures many of these particles, preventing them from building up inside your boiler and protecting it from an unexpected and unwanted breakdown.

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Related FAQs

Can I run a bath and shower at the same time?

Depending on whether you have a hot water cylinder, you can normally run a bath and a shower at the same time. A system boiler and storage cylinder may be more suitable for properties that have a higher demand.

What are the different types of boilers?

The main types of boiler are combi, system, heat only, and electric boilers. The one that you choose for your property will depend on your specific needs and aspects of your home.

What temperature should my boiler be set at?

Typically, your boiler should be set to at least 65 degrees Celsius to prevent bacteria growing in the water and maintaining comfort.

Why is my boiler leaking?

Checking for damp surfaces on or around your boiler, pipe corrosion, and water dripping beneath it can help identify if there is a leak.

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