Do you find your heating system not heating up as it once did? Or maybe the radiators are cold at the bottom and warm at the top? There could be corrosion occurring within the heating system, which slows the circulation of the water in the heating system. Not only will the heating and hot water take a lot longer to heat up, but in the long run, the system will be consuming more gas and energy get the water unto the satisfactory level required.

Some common symptoms of corrosion occurring within your central heating system are:

  • Radiators taking a long time to heat up
  • Cold spots on your radiators
  • Frequently needing to bleed radiators
  • Black water coming from the bleed nipple, or from the radiator when you remove it when decorating
  • Vibration or banging noises from the pipework
  • Hot water fluctuating hot and cold when trying to have a lovely shower or bath
  • Noise from your boiler such as banging, clanging and kettling 
  • Pump whining and making grinding noises
  • Diverter valve jammed or passing water down the heating circuit in summer when no heating is required 

If you are experiencing any 1 or more of these symptoms, our central heating system maybe in need of a 'Powerflush'.

Powerflushing is a very effective method to remove corrosion from the central heating system and restore the flow of water inside the system and get the system back to being efficient and save energy costs.  

the bearded plumbing co - powerflush

the procedure

You may ask what is the procedure to carrying out a powerflush. Below we have highlighted the process within a few steps, just so you can get an understanding of what to expect.

  1. Drain down the complete heating system
  2. Remove the central heating circulator pump and put to a side
  3. Attach the powerflush machine to where the circulator pump is usually connected
  4. Ensure all radiator valves are in the open position to allow the flow of water
  5. Fill the machine with water and begin powerflushing
  6. After 30 minutes, a very effective chemical is added which will assist with the breakdown of the corrosion
  7. Now each radiator will be isolated and the machine will concentrate its powerful flow of water to 1 rad at a time for 30 minutes, and then move on to the next
  8. After all  the radiators have been flushed individually, all radiators are opened up and a second chemical is added to the system and flushed for a final 30 minutes
  9. The water in the system is now drained down to a suitable drainage system
  10. The circulator pump is reinstated and 1ltr of Inhibitor is added to the system. The system is filled with fresh water and the system is entirely bled of air and the system is switched on and the system is balanced and all rads are checked to ensure they are all heating equally and efficiently