Power flushing is a highly effective cleaning method for your boiler, radiator and pipe work. It involves high velocity water cleaning at a low pressure to ensure the safety of your system. It is where a chemical is added to the system to loosen and remove iron oxide (sludge) and scale build up within the radiators, pipe work and boiler. This is then flushed out and further chemicals added to inhibit the re-occurrence of sludge and scale.