We recently carried out a full powerflush of a central heating system in bollington cheshire the system was an open vented system system and Noises were coming from the Boiler and pipework The system was very Black and lots of corrosion had been taking place please see video Below For More Details and if you need any work like this doing please call us on Tel 07836 353 985 or Contact us through our website for any advice or if you wiush to Book Our prices Are up to 50% cheaper Than british gas for power flushing