Hi Not sure if this is the best place to post this. We had a new WB boiler fitted (together with a magnaclean unit) back in June 2010. Last month the heating stopped working and so we called the fitter back in. He spent a few hours and couldn't find the fault. He then called in WB who confirmed that the boiler was not the issue. The fitter then gave up. We called in another gas engineer who said there was a huge amount of sludge still in the system plus a valve had been fitted incorrectly. He then did a powerflush as well as other 'corrections' and charged £325. The question is should I go back to the original fitter to claim all/some of the £325 considering the powerflush had not been done properly? Any advice would be appreciated.