The iron and steel components in central heating systems are vulnerable to corrosion and rusting. This produces a sludge which can block different parts of the system, principally the boiler heat exchanger, pump or the radiators leading to costly repairs.
Old, cast iron pipes were usually a few centimetres in diameter but more modern pipework tends to be narrower, making blockages even more likely.

A blocked boiler will often overheat, causing the system to shut down. To remove a blockage, a boiler engineer may have to power flush your central heating system or replace the heat exchanger – both costly jobs.
A magnetic filter can help avoid these blockages and keep the system running freely by trapping any sludge before it reaches the boiler. A powerful magnet collects the debris, preventing it from damaging the boiler.
Some of these devices also include a filter which gathers non-magnetic deposits from corrosion of copper, zinc or aluminium central heating system components.

Boiler Smart fit Magnetic heating system filters as standard with every new boiler to protect your new investment. If the new boiler is to be fitted to an existing heating system the radiators and pipe work will need to be thoroughly flushed (Boiler Smart recommend a power flush) to remove any corrosion or sludge deposits that could damage the new equipment.

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