we recently power flushed a central heating system in bowdon near altrincham,several of the customers radiators were just not working when we arrived,it was fairly large system consisiting of 17 radiators,by end of power flush all radiators were heating up nicely and we also fitted a spirtech filter on the return pipe to the Boiler,we will soon upload our video for this powerflush so watch this space ,and ofcourse if you need any power flushing in bowdon or altrincham call me or get in touch through our website Tel   07836 353 985