What is a power flush
Not many people have heard about power flushing. It's not until an engineer has informed you that your system is blocked or high amounts of sludge present in the system causing flow issues. A power flush is a cleaning service, that cleans the inside of the boiler, pipes, radiators & clears blockages on your heating system returning the heat back to your radiators. This has to be done by a qualified engineer.
A powerflush is the quickest and most effective way to remove blockages and sludge from your heating system.
During a powerflush, a powerful pump unit is connected directly to your central heating system. Depending on whether you have a combi or system boiler, the powerflush pump will connect to the pump head or circulation pump. It can also be connected across the tails of a radiator.
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Once connected, this pump will flush a powerful blend of chemicals through the pipework. These will remove the sludge and rust in the system, destroy limescale and prevent rust from reoccurring in the future. Once any sludge, oil, scale and other contaminants have been dislodged by the action of the chemicals, your heating engineer will force clean water through the pipes to remove all the contaminated liquid from the system, before properly disposing of it.
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We can power flush any system weather its a common 2 pipe system or single pipe system. We also power flush 10mm -12mm microbore systems. Microbore systems with twin entry valve, where two pipes go into one valve on one side of the radiator cannot be power flushed.
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When the power flush is completed and the system has been re-commissioned we issue a power flush certificate which is accepted by British Gas and all breakdown insurance companies.
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MagnaCleanse Vs Power Flush
Magnacleans
A Magnaclean is where a magnetic filter is added to the system and using the central heating pump to pump the chemicals around the system. Whilst the engineer uses a device called a vibro tool which he will use to vibrate the bottom of the radiator which aggravates the magnetite (sludge) and sends it to the filter. Its only 18% effective doesn't clear all sludge.
We don't recommend this service, the down side to the magnacleans is the vibro tool can mark and damage radiators it can't be used on all radiators, the filter will only collect magnetite not limescale so that ends up blocking up the pump or left in the system, causing blockages in later life.
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Power flush
A power flush is where a special power flush machine and filter are connected to the heating system and with a very powerful cleaning agent for power flushing is added to dissolve any blockage and sludge in the heating system.
We use Kamco CF90 or CF210 machines with a reverse flow function which pumps a low pressure, high flow rate of 150 - 180L per minute whilst the duel magnetic filter collects all the debris from the heating system. A power flush can also clean microbore system. Power flushing is 98% effective on cleaning any heating system. When we are carrying out a power flush we are checking the water TDS levels once the readings reach the same or within 30% of the mains water reading then the system is deemed clean and meets the BS7593-2019 building standards.
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People have been told that power flushing can cause leaks, this cannot happen, the power flush it self will not cause any leaks. What can happen is if you have a radiator with a pinhole in it already and its blocked with sludge and corrosion, then this will leak due to the fact that the corrosion will be lifted and open the hole. The power flush will not damage the pipe work or boiler as it will only reach 1.8 bar in pressure, most systems when hot will run at 2.2 bar. So a power flush is the best option if you have a blockage in the pipe work, cold spots on the radiators or boiler is banging and overheating.
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