A power flush is an often-used method in central heating to clear your radiators and pipework from magnetic sludge and debris.

However, if the problem goes unnoticed for long periods, you may end up dealing with bigger ones in the form of increased energy bills or failing systems further down the line. This often ends up costing a lot more overall, along with any headaches that come with it if. In other words, you need to know what you’re dealing with before you start paying for anything.

For those of us living in South Wales, finding the right person for the job is vital to making sure your central heating system is well taken care of. Whether you’re in the capital city of Cardiff, Newport, or further out into the valleys, if you’re based in South Wales then there’s no reason why you can’t explore the benefits.

But what exactly is a power flush? Are there any dangers to the procedure? And if so, what other options are available? What does it cost? Questions like these will need answering before you even consider thinking about a power flush.

In this article, we’ll give you a step-by-step explanation of how a ‘power flush South Wales’ is carried out. You’ll also learn about what can cause the problems that a power flush can solve, an assessment of one our favourite flushing systems as well as guidance on how you can have one arranged yourself.

Power Flush South Wales – What is a power flush?

The good thing about a power flush is that its reasonably self-explanatory. Using a specially designed machine that our engineers will provide; it will pump water mixed with cleaning chemicals, through your radiators at high pressure to help remove any build up of dirt and magnetic sludge.

This is carried out by following these steps:

  • Upon arriving at your property, our engineer will attach the machine itself to a single entry point in your central heating system
  • That machine will then pump a powerful mix of cleaning chemicals with water throughout your system
  • As this is happening, the chemicals help dislodge and break down deposits sitting inside your radiators
  • As the process continues, this gets drained out the system
  • Your system will then be refilled with clean water
  • Inhibitors are added to protect your heating system from damage in the future

All of this is done to make sure your boiler and heating system is returned as close as possible to its former glory. A power flush in South Wales provided by us can help prolong the life of your heating system. It helps maximise the heat output from your radiators and make sure you’re getting the best possible performance. Not only this, but it’ll also help you cut down on energy costs over time and prolong the life of your boiler as much as possible.

Why do I need a Power Flush South Wales?

While there may be a number of reasons for you to arrange a Power Flush, be sure to understand exactly why they’re performed. Look out for the following signs in your central heating system, and you might find you’re in need of one:

  • Radiators have cold patches near the bottom
  • Excessive ‘Kettling’ noises coming from the boiler
  • Water is discolored when you bleed your radiators
  • Heating generally slow to warm up
  • Hydrogen and methane gas caused by bacteria in system can give off a strong odor in the radiators, which is noticeable whilst bleeding them. (Caution as this is flammable)
  • Excessive system noise
  • Increase in Fuel energy bills

A radiator with cold patches near the bottom is usually a tell-tale sign of a sludge build up

While these are just a few of the more obvious signs to look for, it’s worth paying close attention to how everything is operating. The cause for a lot of these issues comes in the form of ‘magnetic sludge’ – a unsettling deposit that collects in several areas including your radiators and pipework.

What exactly is magnetic sludge?

It’s a mix of rust, black iron oxide, dirt and other pieces of debris that causes blockages and ends up restricting the flow of water. Because of this restriction, your radiators will then struggle to reach any desired temperatures. This sludge can damage your boiler, heat pump and valves, ultimately having a negative effect on your energy bills and can become costly to replace.

Magnetic sludge in your radiators can hide a multitude of things once it has built up, this is the most common cause of corrosion in radiators. From the inside of your radiators it will cause rusting which ends up eating tiny holes in the radiator resulting in leaks.

The problem with this is if you power flush your system these holes become unblocked by the sludge and can start to leak so you don’t know that you have a problem until this is done. This can ultimately lead to you having to replace the radiators with this problem.

Its always best if you have a very old system to air on the side of caution.

Why do blockages like this occur?

As water passes through your system and travels down the metal pipes, rust starts to form. Rust itself occurs due to the corrosion of metallic alloys in the presence of oxygen and water. When this happens, pieces of rust are constantly broken off by the water and carried throughout the system.

Eventually, this rust along with other metallic compounds, ends being deposited in inconvenient places such as your radiators.

Therefore, it can be quite easy to identify a build-up of black sludge in your radiators. If you gently run your hands over the surface, you’ll find the cold patches where it builds up (at the bottom of the radiator), making it impossible for the water to access to heat your radiator properly.

What’s the best power flushing system to use?

Getting a professional to do the job for you can save you a lot of hassle and worry. However, you can still benefit from learning about the resources that a professional has at their disposal. Have a look at one of the best examples we like to use at BT Morgan Heating Engineers:

The Adey MagnaCleanse

As one of the best examples for power flushing on the market, the Adey MagnaCleanse proves how efficiently the job can be done. Many of its benefits include:

  • Noticeably extended lifespan of heating system
  • Improves efficiency of boiler and central heating performance
  • A typical system flush can be finished within approximately 2-4 hours
  • Provides valuable protection for your system


One of the best aspects of the Adey MagnaCleanse, is how effective it is at reducing your annual energy bills. For a detailed look, click here to use Adey’s own savings calculator

As the customer, you’ll be able to enjoy the benefits all year round from a thoroughly power-flushed system. However, even installers can enjoy what this product has to offer. Along with the usual energy saving bonuses, there’s more to benefit from including:

  • Highly efficient water-saving capability – it only needs to drain down at the end of the process
  • Works continuously during the process to remove all magnetite lodged in the system
  • Cleaning chemicals remain in the system during the whole process, ensuring a thorough completion of the job
  • The Magnacleanse’s drain valve offers improved control when releasing system pressure during the power flush process

Here at B T Morgan Heating Engineers, with every MagnaCleanse Flush we will include a MagnaClean filter. Magnetic filters are recommended as best practice, they will save you money on your fuel bills and reduce expensive maintenance costs for the life of your boiler. This is included in our price.

How much is a power flush?

There are lots of factors that will affect the price of a power flush, such as the size and complexity of the central heating system. Prices will vary from engineer to engineer but can range from £299 to £599.

Are there times when a power flush isn’t the best option?

In all honesty, yes. A power flush is certainly very good at getting the job done, and it’s clear just how much you can benefit from having one arranged for your property. However, if your property and central heating system is too old, then a slightly milder ‘Chemical flush’ might be a better option for you. You can contact a reputable heating company like us, to give you the best advice on this and in some cases, we can arrange a survey to establish the best option for you. As mentioned previously if your system and radiators are old then it does carry some risk with the condition if these radiators and any possible leaks. In some cases, it may be more beneficial to replace the system.

Who can perform a power flush?

There are power flushing kits available for hire and industrial videos available on the internet it is a very complicated job. Hiring a professional company or a professional who has experience in power flushing systems is always the safe option. It can get very messy; specialist chemicals and equipment should only be handled by trained competent persons.

Why choose B T Morgan Heating Engineers?

Because of the shared wealth of experience from our employees, we’re able to get each job done to the high standard that you need. Professionals like our quality assured, Gas Safe engineers are fully trained and competent persons. We can make sure you feel looked after and that your boiler and central heating system can perform as best as possible.

As local South Wales based heating engineers, we’re able to provide a professional and high-quality service that’s from just around the corner!