Power Flush Your Heating SystemPower flushing is a technique used to clear sludge, rust and other debris in your central heating system pipes, radiators, coils, and heat exchangers. Description A power flush is a cleaning procedure. Power flushing cleans the inside surfaces of your central heating system. The procedure is made more effective by chemicals and magnets to aid in the cleaning process, once clean you add a chemical called an inhibitor that stays in the system and