Regular system ( also known as open vent system or gravity pumped system ) These systems are problematic with sludge & rust (corrosion) due to the open F&E tank in the loft, where the water can oxidise.

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This type of system does suffer a lot from sludge & debris within the system & corrosion. We have seen this type of system completely blocked in the pipework due to rust & sludge. Also suffers a lot from pump failure.

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Typical faults that a power flush will cure:

Clears cold spots within the radiators, unblock pipework, regain the full flow to radiators and quieten boiler noise. Cold spots in radiators or radiators not working at all no heat.

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Also remember when fitting a new boiler you must have the system power flushed before new boiler is fitted. This will invalid your warranty if no power flush is done.

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