I'm sorry...I know it's the most boring subject ever, but doesn anyone have any experience of this, please? We have three radiators which are not heating up and our plumber has suggested having them power flushed, although, he has said that it may not solve the problem. We've found a local company who want £480 to do this but I'm reluctant to pay such a large amount of money if it's not going to work. Has anyone had a central system powerflushed and has it worked...or otherwise? Thank you so much!