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The combi was already here when I moved in (10 years ago) so I have no idea whether it was power flushed then - although, given the state of all the work done on the place by the previous owner, I would think not. The boiler fires on HW demand but does exactly the same as CH - fires for about...

Hi, I'm really hoping someone can put my mind at rest as I'm at my wits end. I had no heating so plumber told me system was blocked and needed to be flushed. I have a (terrible) one pipe system so this will involve taking all the rads off one by one. He also said pump was on its last legs...