Power flushing is the process by which heating systems are cleaned using water at high velocity, but very low pressure so that no physical damage is caused to the system.
The objective is to restore systems with circulation and boiler noise problems (caused by sludge and corrosion deposits) to optimum operation. Power flushing removes these deposits and problems they cause.
Symptoms that a power flush is required include:
Radiators don't heat up?
Underfloor heating in-effective?
High heating bills?