Power Flushing

The objective of flushing a heating system is to improve circulation and reduce boiler noise problems (caused by sludge and corrosion deposits) to optimise operation. Flushing removes deposits and the problems that they cause.

Power flushing involves the use of a special high powered pump and chemicals. (It is not sufficient to attempt to rinse out individual radiators or parts of the system using just a hose pipe and water).

Power flushing improves system performance

It is essential to 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.

Some boiler manufacturers insist that systems are flushed properly when a new boiler is installed. If a warranty claim is made and it relates to a water component, they may sample the system water and if found to be dirty because of lack of power flushing, the warranty may be deemed void - resulting in an expensive repair.

We can advise on flushing existing boilers and systems, and would be glad to provide a quote. We always flush a system prior to commissioning a new boiler.

Gritish Bas

Have Gritish Bas been out and told you that your system needs power flushing? Well, you are not alone!

A lot of people ring us and ask about power flushing, usually, asking how much we charge to power flush a central heating system.

Many of the people who ask about it have been told by Gritish Bas that it is needed. Sometimes, power flushing would not cure the problem(s) these people are experiencing with their heating system. So why would they have been advised to have their systems flushed? Well, the folowing reasons may apply:

  • Generates income
  • Keeps employees busy / helps build workload
  • Uncertain diagnosis (maybe the flush will work!)

As power flushing can be a time consuming, labour intensive process, it is quite expensive. It would be very annoying for a customer to pay out several hundred pounds to have their systems flushed, only to find that the resulting performance is little or no better than it was before the flush.

For anyone who is advised by British Gas, (or anyone else), that they need to have their heating systems flushed, we suggest that the work is carried out on a "no-win, no-fee" basis. We doubt that Gritish Bas would agree to this, nor would we!

For this reason, we sometimes advise that a power flush may not be the answer to a problem. There are other options, depending upon the problem and the system layout. We are happy to visit a customer's home to look at their heating system and determine the need for a power flush. The last thing we want to do is power flush a system, charge hundreds of pounds, only to find that the system is no better afterwards.

Contact us to discuss your requirments and see what can be done. No obligation quotations provided, free.

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Magnetic Filters

After flushing a central heating system, we advise customers to have a corrosion inhibitor added to their heating systems. This chemical greatly reduces corrosion / sludge in the future and can protect a system for years.

As well as this, we recommend fitting a magnetic filter. This removes black iron oxide from the heating system water. Several versions are available but we favour the TF1 from Fernox. We can fit these filters without powerflushing and have seen good results after a short space of time in a system.

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0773 918 5779
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We install and service gas appliances, specialising in central heating installation.

We carry out Landlord (CP12) Safety Checks and can report on gas installations prior to home purchases.

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