It’s very important to have a clean system free of dirt, flux etc. A poorly maintained system can easily become problematic and in the end cost YOU a lot of money.
Sludge really shortens the life of your heating system. Especially pumps, valves etc. with moving parts. It also collects in the pipe work, radiators, boiler heat exchanger, and cylinder which can easily cause a complete blockage.
A powerflush help remove these particles from the system with the use of a hi flow pump and chemicals.
Once a system has been cleaned it should be treated with a quality inhibitor to prevent this happening in the first place.