A Powerflush is a cleansing process which aims to remove deposits…

A Powerflush is a cleansing process which aims to remove deposits of sludge, rust and any other debris from your central heating system.

These contaminants, if left, can seriously affect the efficiency of a heating system and, in severe cases, a powerflush could be the only option available. Over time the water in your pipes, boiler and radiators deposits unwanted byproducts like rust. This rust (plus other dirt and debris) becomes an unpleasant, mud-like substance that professionals affectionately refer to as ‘sludge’.

Sludge in your heating system can cause to blockages and corrosion which will lead to both inefficiency and / or breakdown. In extreme cases it can be so damaging that a complete boiler replacement is needed.

When Do You Need A Powerflush?
If you carry out regular servicing and maintenance (professional servicing is recommended annually) then a preventative Powerflush should only be necessary every 5-6 years to clear debris and prevent significant blockages from taking hold.
However, this will vary depending on the system you have. For example, some boilers use copper heat exchangers rather than stainless steel which will corrode quicker.

IMPORTANT: If you are planning to replace your boiler it’s important that the engineer performs a Powerflush before the installation. Otherwise, you risk contaminating the new boiler with damaging sludge and debris that’s hanging around in the old pipework.

Signs You Need a Powerflush
There are signs to look out for that suggest that all is not well in your central heating system.

Cold areas on radiators e.g. at the bottom
Excessive noise from the boiler or the heating system pump
Discoloured water when you bleed the radiators
Heating is slow to warm up
Cloudy tap water (limescale in system)
Some radiators struggle to heat up as well as others
Radiators cold but pipes are hot
Boiler regularly shuts down and needs restarting
No water escapes when you bleed a radiator
Noisy radiators and or / boiler
Small leaks in radiators.



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