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The Need To Powerflush Your System 

Sludge and debris if left in heating systems will accumulate in the boiler and radiators, dramatically reducing their effectiveness and will eventually lead to a loss of efficiency or premature failure of the appliance.

The following are some of the problems that could be avoided with a Powerflush as it removes the Magnetite sludge from your system :

Cold radiators or cold spots on radiators
Excessive noise from the boiler or pump possible leading to premature failure
Heating pump circulation problems
Pipe blockages
Internal corrosion
System blockages
Dis-colored water when you bleed a radiator or in severe cases when you run a tap
Poor or even non existent hot water even when the system has been running a while

These problems on their own may be able to be rectified without Powerflushing, however if you notice more than one sign then its probably worth considering a powerflush.

The benefits of power flushing

The result of power flushing is that the boiler and the rest of the central heating system become more efficient. This occurs because there is better circulation through the pipework and radiators and in turn the boiler doesn't have to work so hard to warm the house and water, Therefore the overall result is that you will save money on your heating bills.

Consequences of not power flushing

If your heating system does need to be power flushed and you decide not to do it then the problems will almost certanly get worse. The circulation through the pipes and the radiators will slow until very little hot water gets through. This means that the house will not heat up and the boiler will be working harder and be working for no real reason. The result of this is that energy will be wasted and in the long run money will be wasted as well.

New Boilers

In accordance with BS7593, boiler manufacturers requirements and benchmark. All new replacement boilers installed on to existing heating systems and new heating systems should be power flushed to ensure all sludge, Magnetite, fluxes, residues, excess jointing compound, mineral oils and other contaminants are thoroughly flushed from the system to ensure peak performance of the boiler and heating system


How do we do a power flush

When power flushing, we as a company use both the Powerflush and Magnetite machines, connecting them to the heating system. The principle is to create a powerful fresh water flow under controlled conditions to remove the debris from the system. After connecting the Powerflush and Magnetite cleaning machines to the heating systems, a chemical cleaner is added to the system.

The contaminated water passes through the system which removes the circulating black iron oxide contamination from the flushing water quickly and simply using the power of a large magnet which attracts the magnetic iron oxide away from the water flow.The rapid removal of debris from the flushing water prevents saturation of the chemical cleaner solution with the black sludge, leading to a more effective power flush.

When the new boiler/heating system has been installed and before the final commissioning of the boiler we again carry out a manual flush of the system adding a pre-commission cleaning agent. The water is circulated around the system breaking down any flux's, jointing agent etc that might have been introduced into the system, in to suspendable parts making it easier to flush out the system. The system is once again drained, re-filled with fresh water and an inhibitor added. The inhibitor helps to protect the system from within, stopping the build up of sludge within the system, ensuring maximum efficiency and minimum fuel usage. Finally when the heating is completed and fully working the inhibitor levels are checked to ensure the concentrated levels are correct for the system and recorded on the commissioning sheet.


For a small additional cost we offer the "Sentinal System Check" which consists of:

• After the system has been fully flushed as detailed above, the inhibitor is added and the boiler commissioned. 

• Water samples are taken and sent to an independent highly qualified laboratory that operates a quality system compliant with TO ISO 17025 and a full laboratory report is supplied that contains the results of all analysis undertaken.

• This report is added to your installation and commissioning pack.


So is power flushing worth it? The answer to this depends on how affected your heating system is. If the entire system is showing signs of bad circulation or you notice more than two of the signs mentioned above then a powerflush will probably be worth the money you pay, if however, only a few radiators are suffering from cold spots then it will probably be much quicker and easier to take the radiators off the wall and flush them separately. To be absolutely sure though it is worth asking Denis his advice.

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