Andrew Riley heating plumbing & gas
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0121 439 7129
077 2926 2276


Power-flushing

What is Power-flushing?

Power-flushing will clean a central heating system internally and in particular improve radiator performance and heat output. Put simply, it’s rather like vacuum cleaning the inside of your radiators & boiler; only using a mixture of water & a cleaning fluid to pump & flush out the insides of your heating system. 

For our power-flushing we use market leader Kamco's high powered power-flush pump together with their magnetic power-flushing filter to rapidly remove circulating black iron oxide contamination from the flushing water

To professionally power-flush the average house central heating system will take at least a day, this includes flushing every radiator one by one.

With an increase in fuel prices cleaning and Power-flushing your central heating system can result in saving money on your heating costs due to the fact that all the internal elements will be clean and able to work to their respective maximum potential.

NOTE FOR NEW BOILER INSTALLATIONS: Building regulations (Part L) state chemical flushing of your existing heating system pipework must be undertaken prior to commissioning a new boiler to an existing central heating system. 

Boiler manufacturers require power-flushing when fitting a new boiler to an existing central heating system to validate the warranty.  

Thus, when fitting a new replacement boiler to an existing heating system power-flushing is an essential part of the work



Power-flushing can help with the following problems:
  • Cold Radiators: Sediment of iron oxide sludge accumulating at the bottom of radiators restricts the flow pattern.
  • Sludge and Scale: Black Oxide sludge forms continuously in all unprotected central heating systems as a result of corrosion. It will also harden into scale on the hottest surfaces of a system, causing the boiler to make knocking or banging noises called ‘kettling’ 


  • Fuel Wastage: In untreated heating systems, corrosion debris accumulates in the boiler and, in hard water areas lime-scale will form. The insulating effect of these deposits reduces heat transfer to the circulating water. 3mm of lime scale deposit on the heat exchanger will add 18% to your fuel bill.
  • Boiler Failure: Assuming no other faults exist, the insulating effect of accumulated deposits of sludge and scale can restrict the transfer of heat to such an extent that the boiler overheats and fractures!
  • Pump Seizure & Failure: Black Oxide sludge, being abrasive and magnetisable, increases shaft and bearing wear which is the most common cause of sticking pumps and pump failures.

How to keep your central heating system in top condition

We recommend fitting an air & dirt central heating filter system such as the SpiroCombi deaerators/dirt separators.  These will continuously remove dirt, air and microbubbles from the system fluid.

Building regulations (Part L) recommend a dirt filter is fitted prior to commissioning a new boiler to an existing central heating system.  Many boiler manufacturers now require a dirt filter is fitted to validate their warranty.




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