Power Flushing

Are You In Need of a Power Flush In The Ledbury Area?

If your problem is because of poor quality system water, failing parts due to sludge, cold areas in radiators, radiators failing to heat up at all, blocked heat exchangers or any other issue which sludge can cause, we are able to help.

We provide a fixed rate power flushing service and are the leading providers of this in Ledbury. We carry this service out on a regular basis and are highly experienced with the process. If you choose us, you will be getting the best service!

Power flushing is regularly carried out incorrectly resulting in customers paying significantly more trying to recitify sludge, scale and sediment related problems then they ought to. There are countless ways which the process could be carried out, but only a few correct ways. We explain at length further down the page.

We follow the Approve Codes of Practice such as those set out by the Domestic Water Treatment Association, which make sure that treated water is physically examined, analysed with a TDS meter (the total dissolved solids) to within 10% of the tap water supply and PH checked before any inhibitor treatment.

So Why Use Us?

  • Experts at power flushing
  • Fixed price service
  • Trustworthy and reliable
  • One of the leading power flushing providers in Ledbury

What We Offer:

A professional serviceExcellent value for moneyDurable heating systemsTailored solutions to your needsWe offer a complete range of solutions and will always advise you on the best course of action which will keep your total costs down, not just with initial costs. We only want to install central heating systems which have minimal maintenance requirements and will be as cheap to run as possible.Check around the internet about us, you will find quality reviews and examples of what we do all over it. We are transparent, honest and take pride in not screwing the customer over.


“Sludge and scale are the leading cause of premature boiler and heating system failure. Any boiler that beats the lifetime statistics usually has clear system water within it that contains inhibitors, whereas boilers that are regularly having issues will almost always have dirty system water. There are a large number of heating systems that would benefit from a power flush, potentially saving the owners a lot of money in the long run.”

What Is Power Flushing?

Power flushing is the procedure where a high speed, low-pressure pump is utilised to release sediment and other undesirable matter (flux, solder, bacteria, etc) in wet central heating systems. Thereafter, the unwanted matter within the system water is removed from the heating system.

How To Power Flush Correctly

The right method to use to do this is by adapting onto, or taking out the central heating pump from the system and attaching the power flush machine to the system’s “heart”. Instead, if there are allocated power flushing connection points or a filter, sometimes power flushing can be just as effective if done through these points. Power flushing central heating systems through radiators and other techniques will often lead to poor results and is not a recommended or approved method. Having said that, power flushing one problematic radiator is an acceptable solution.

To make this process quicker, when sludge (ferrous oxide) is causing a problem, magnetic filtration can improve the process and also reduce the amount of water used.

Using Chemicals Correctly

Using proper techniques, equipment and effective chemicals at the correct doses increases the possibility of power flushing success. Powerful acid-based chemicals (these must be neutralized using another product prior to being drained) are usually more effective than using an “environmentally friendly”, single flush product.

We uphold the use of specific, dedicated power flushing acid chemicals like Scale Breaker & FX2 instead of the use of products like X800 on existing central heating systems.

Ferrous oxide, flux residue and limescale are the solids commonly discovered in central heating systems. They often lead to blockages and restrictions within heating systems, lowering or even stopping the flow of water and heat transfer. The chemicals we advocate for power flushing usually disintegrate such unwanted matter and allow it to circulate in the system water by the power flushing unit. More significant issues, like dense blockages, particularly in micro-bore pipework (8 & 10mm) can reduce the efficiency of the method.

Power Flushing Microbore Systems

It is possible to effectively power flush micro-bore systems, however, the narrower pipes restrict water flow meaning that this solution does not have 100% success rate. Other techniques can be used to remove a greater amount of sediment from the heating system successful, like individual radiator flushing and draining the radiator individually after treatment, but it is vital to bear in mind that power flushing has its limitations. The higher the number of potential problems, the higher the likelihood of their being problems leading to an inefficient result.

Building Aggregates Blockages

Unwanted things, that may have entered the system while it was being installed, such as materials used within the house building process, will usually not be broken down by the chemicals. Debris left behind as the result of poor installation of the system can often result in the power flushing process not successfully removing all the foreign matter.

New-build properties often suffer problems with aggregates causing blockages or restrictions with eating systems. During the building of modern homes, often the central heating systems are built in stages. If pipes have been left open early on, debris from the site can easily enter the system. In some cases where we expected it to be this, we have recommended the removal of the affected pipework prior to the power flushing process.

Why Is It Not Possible For Power Flushing To Remove Everything?

Small amounts of discolored water, which contains deposits, often gets trapped within the radiators where the water flow is restricted due to radiator size, where it is, how wide the pipework is, how many bends there are and the length of the piping. Frequently, it is a tiny bit of fluid in the lower part of the radiator that will quickly become clear once drawn out. We recommend the use of lock shield valves, which have drain-offs, on all low-level radiators to make the removal of sediments and future maintenance far easier.

Traditional Heating Systems

Where header tanks (F&E tanks) supply conventional central heating systems, these are disconnected during the procedure in order to stop fluid overflowing back into the tank again. Over the years, F&E tanks can become riddled with contaminants such as sediment and when connected back onto the system, this allows the unwanted deposits to make their way back into the system once again. Where it is simple to access the F&E tank, we recommend the removal and cleaning of the tank during power flushing. It can sometimes be challenging to inspect or remove the F&E tank, usually because of its location. Where this is the case, if a customer is unwilling to pay to replace the tank, they must understand the risk of the sediment re-entering the heating system.

Are Leaks Caused By Power Flushing?

Power flushing will not result in leaks, but it can draw attention to problems within the system. Some examples are:

Equipment has not been properly jointed
Parts like radiators or valves where sludge stops the water escaping through a defect

Issues with parts can become obvious during the power flushing process because the water will then freely pass once the corrosion, scale and sludge has been removed. Even though it is unlikely to happen, when it does, the price of power flushing does not cover such defects.

Does Power Flushing Work?

On the whole, power flushing is a great way of improving the life expectancy and capacity of your central heating system. A blocked system usually leads to higher maintenance costs and a lower level of efficiency, which will eventually cause higher costs to operate properly.

Throughout our encounters, most central heating systems contain contaminants, which are preventing the proper operation of the system. How serious this is depends on the severity of the contamination. If you ensure the quality of and treatment of water within the heating system, prices for repairs to the boiler and system will be lower.

We have not yet to encountered a contaminated system that has not improved through a correctly carried-out power flush. However, it is not always possible to restore flow to all parts of a heating system through the use of power flushing. We have a fantastic level of success within the Ledbury area.

Sludge/Scale/Sediment Causes:

Tradtional systems:

  • Radiators get hot when the system is solely set for hot water
  • Scalding temperatures through the hot tap
  • Failure to get hot water through the hot tap
  • Reduced life-expectancy of pump
  • Reduced life-expectancy of motorised valve
  • Boiler kettling
  • System can overheat
  • Radiator cold spots
  • Water from the system “pumping over” into the F&E tank
  • Thermostatic radiator valves stop working

Combination (Combi) boilers:

  • Radiators getting warm when system is set for hot water only
  • Scalding temperatures through the hot tap
  • Erratic temperatures through hot tap
  • Hot tap water does not get hot
  • Reduced life-expectancy of pump
  • Boiler kettling
  • System can overheat
  • Radiator cold spots
  • Thermostatic radiator valves stop working

Analysis of System Water

Usually, heating engineers will use their experience and visual detection to diagnose sludge and scale within the system. When in significant quantities, sediments like ferrous oxide are visible in sludge form. Limescale, however, is unable to be spotted in the water, only becoming obvious when it solidifies, becoming a white deposit. It is usual to spot limescale build up in parts of the system like the pipework.

Engineers use visual test equipment, turbidity tubes for example, their vast experience and TDS meter to find sediment within a heating system. Nevertheless, this method will not be able to pinpoint the exact location of the contaminants within the system. The sole way of identifying exactly what exists is through the collection of water samples, sending them away to be analysed in a laboratory. Generally, this is an expensive thing to do and, as such, seldom used.

After Power Flushing

Once a system has been power flushed, inhibitors are added in order to slow down corrosion, and the build up of limescale and contamination. How effective inhibitors are is debatable due to the majority of research on the product coming from the manufacturers of the products.

There are several types of product offering different levels of effectiveness. There is no impartial person who is able to say which product will make the biggest difference, but in our opinion, most tend to work well when used after power flushing a system. We have encountered systems of up to ten years old, which have been treated, with no or very little build up.

Generally, one or two tubs will be sufficient to use on a standard system. The majority of brands estimate one container for 100 litres (the equivalent of 10 radiators).

It is important to note that, though brand-dependent, inhibitors can change the colour of the water somewhat after use if they are coloured. The majority of them are now clear, but in some cases, they can discolour the water.

Fernox, Sentinel and Adey are our preferred inhibitors. Our experience shows that all do an extremely good job over sustained periods of time.

Frequently Asked Questions

It is possible, but not using chemicals which are acid-based! This is because aluminium does not react well with acids or strong alkalines, so less powerful products must be employed. Alternatively, the boiler could be disconnected from the system at the point where the chemicals need to be added.

Yes! In 99% of cases, the issue(s) will be resolved without any further action being necessary. Having said that, there are certain cases where it will not be successful.

No. The process does not lead to leaks. However, where leaks are being prevented through the build up of compounds within the heating system, the remove of this can lead to parts of the system leaking. This is an unusual occurrence, but when it does happen, it is often around the radiator valves.

Areas Around Ledbury That We Cover

  • Eastnor
  • Parkway
  • Wallers Green
  • Ludstock
  • Dymock
  • Bromsberrow Heath
  • Trumpet
  • Staplow

See all the areas we cover here!