Power Flushing

A power flush is a process carried out designed to remove sludgy build-up in the boiler, pipes and radiators that make up your central heating system. A power flushing unit sends water through your central-heating system at high velocity to dislodge any build-up of sludge, rust and other debris.
This helps to improve the efficiency and life span of the boiler and central heating system and prevent uncostly breakdowns. 
As with so many plumbing issues, regular maintenance (including power flushing) is the best way to keep your system in shape.