my worcster combi boiler is 2 tears old and pressure needs to be toped up every 6/7 days an engineer serviced the boiler and confirmed nothing wrong with the boiler but appeared at a loss as to what to do about the pressure drop.any ideas/thoughts

RON, November 2011

did the engineer check the safety discharge pipe outlet for passing water?If that was ok its a case of find the micro leak

sw plumbob, November 2011