Power Flushing Services

If you answer yes to one or more of the below questions, your Central Heating System may need Power Flushing


If you answer yes to one or more of the below questions, your Central Heating System may need Power Flushing

  • Have you noticed that your Central Heating doesn’t appear to be as warm as it once was?
  • Have your radiators become noisy?
  • Are there cold spots on your radiators, usually at the bottom in the middle?
  • Does it take an age for your Central Heating to initially warm up?

The Problem…

Rust and sludge builds up slowly over time, due to oxidisation within your system. Left to manifest itself, this sludge can and will eventually, over time clog up radiator valves, boiler internal parts, and heating pumps and zone valves, requiring costly repairs.

This rust and sludge can however, usually be removed through a process known as Power Flushing.

This process, takes on average around a day to carry out using a high pressure water system that isolates each radiator to ‘flush’ all rust and sludge from within, leaving you with a cleaner more efficient system.

Once the Power Flush is completed, your Central Heating System is treated to a rust inhibitor solution. This inhibitor does exactly what it says on the tin, it inhibits rust and corrosion.

This can be topped up every year on the on the annual boiler service, for a lot less than the cost of a new central heating system. At Furness Heating Engineers, we offer you the peace of mind of a Power flush from as little as £350.00.

The Benefits of Power Flushing

Power Flushing, jet flushing and hard flushing are all expressions used (in the heating trade over many years) to denote the process by which heating systems are forcibly cleansed using water at high velocity, but low pressure, so that no physical damage is caused to the system.

The objective is to restore systems with circulation and boiler noise problems (caused by sludge and corrosion deposits) to optimum operation. Power flushing removes these deposits and the problems that they cause.

Power flushing, in conjunction with flushing chemicals is also an excellent way to pre-commission and clean new heating systems, to remove excess flux, swarf and other debris, and the grease and oil used to prevent rusting of components before use.

It is prudent to power flush a heating system immediately before fitting a new boiler to an existing system to prevent possible future problems. Many systems are found to contain corrosion and sludge, even if no flow problems have yet shown themselves.

Existing debris is often mobilised by alterations to the system/piping and the increased efficiency of the new boiler, and may then accumulate in the boiler heat exchanger, causing noisy operation, reduced efficiency and, in extreme circumstances, failure of the boiler. The high efficiency and compactness of modern boilers, developed to minimise fuel costs and pollution, means that they are more susceptible to problems caused by debris in the system water.

Power Flushing Process

The power flushing process is a versatile, easy to use and highly effective method of flushing heating systems. By utilising a Power flushing machine, heating systems can be purged of sludge, scale and corrosion deposits with minimal dismantling and disruption.
How does it work?

The power flushing pump is simply connected into the heating system, either across standard circulator pump couplings, across the tails of one radiator, or wherever most practicable. The powerful flow, combined with instantaneous flow reverser device, will dislodge and mobilise deposits and corrosion which resist traditional system cleaning methods.

Once the corrosion and sludge deposits have been loosened and mobilised, fresh clean water is forced through the heating system, pushing the contaminated water out through a full bore dump valve to waste. During the process, radiators are individually flushed, without removing or disconnecting them from the system, by directing the full output of the pump through each radiator separately.

At the end of the flushing process, the system contains fresh clean water and reinstatement of the system to normal operation takes only a few minutes.
System flushing will not remedy design or mechanical faults, which should be rectified, but in many cases it will cure the problems caused by these.

Please call 01229 831711 to speak to our friendly staff directly about your heating requirements or to arrange an appointment.

    Gas Engineers Barrow - Furness Heating Engineers Ltd are your one stop shop for all your heating requirements in Barrow and the South Lakes. We specialise in everything related to heating, from Boiler Repairs, Servicing & Installations, Cooker & Fire Installations to Bathrooms and Landlord safety checks.


    19 Abbey Road, Barrow-in-Furness, Cumbria, LA14 5UD


    01229 831711