Power Flushing

A power flush is a process carried out by our central heating engineers, designed to remove sludgy build-up in your boiler, pipes and radiators that make up your central heating system. A power flushing unit sends water through your central-heating system at high velocity to dislodge any build-up of sludge, rust and other debris that may be present. This process helps to improve the efficiency and lifespan of the boiler and central heating system, helping to prevent breakdowns.

When is a Power Flush required?

One or more of these symptoms could indicate that your central heating system would benefit from from this process:

  • Cold radiators and radiators with substantial cold spots
  • Black, sludgy water in the heating system (often indicated during radiator removal or a failed heating pump/valve replacement)
  • Poor circulation within a system that used to perform.
  • A magnet attaches to copper pipe-work (signs of iron sludge within the same)
  • An overflowing attic header tank (we would also advise checking your pump speed in this instance)

We would recommend a Power Flush if you're thinking of having a new boiler installed to an old central heating system with old-style radiators. Our boiler engineer can carry out visual and chemical checks, of which indicate the PH balance and levels of corrosive elements in the system. These checks will determine whether a full power flush is indeed required. In some cases a ‘dynamic flush’, using clean mains pressure water, is all that's needed to aid your system. Our engineers can advise accordingly to suit your your systems requirements.

What is the process and how long does it take to complete?

A powerful machine  'pumping station' is used to remove dirty water and sludgy build-up in the system, while introducing clean water. The engineer may add a chemical to the system to break down sludge before the equipment is connected and the flushing process begins.

The power flushing process is made up of several stages:

  • Following setup of equipment, our engineer should spend around 60-90 minutes flushing the entirety of your system (in both directions), persisting with any troublesome sections until they run clean.
  • Clearing out the system, our engineer will add a chemical 'neutraliser' and wash it through the system. Our engineer will also take this opportunity to check the PH balance, making sure the system is not too acidic; excess acid can lead to internal corrosion.
  • Our engineer round off the flushing works by add a dose of ‘inhibitor’ fluid to the system. This prevents corrosion and goes some way to preventing sludge build-up in the central heating system in the future. Depending on the size and initial condition of the system, the complete process may well take a little longer and our helpful staff will advise accordingly with a little information from yourself. 


Call us on 01473 822775