To begin the process, a powerful pump, which is attached to the powerflushing machine, is connected to your central heating system.
On a standard central heating system, this means removing the pump and connecting the powerflush hoses to the pump valves. On a combi-boiler system, the powerflushing hoses would be connected to your radiators.
The pump on a powerflushing machine moves fluid through your system 4-5 times faster than the pump on your central heating system, which gives it the power to remove the sludge deposits that typical pressure can’t flush away.
Next, a series of high strength cleansing chemicals are pumped through the heating system to flush out all contaminants. The chemical solutions used typically include an agent to help break down and remove rust and sludge, a descaler to break down limescale and a corrosion inhibitor to stop further rust from occurring.