We have recently had electric storage heaters removed from the house we bought and had central heating installed - combination boiler - combi 30 HE. We have had problems with the flue - installed in loft and have found on a number of occasions that it had come apart - contacted installer and he just put duck tape around it. We told him about the very load noises, kinda of pulsating bangs and unless you turned the thermostat completely down it would continue to get louder and louder. We was just told that we need to bleed the rads, which we have done and since then have to do them very regularly, especially one of them. We have also noticed that one of the pipes in bathroom towel rail is leaking which I guess is why we have to keep bleeding the rads. We asked for the manufacture to check out boiler and he said that the flue should have some holding brackets on it and should not need duck tape at all. Also the pipe sticking out of roof is not straight ! He said that the pressure on boiler was very low and brought it back to the correct pressure, but we are still getting the very loud pulsating banging, We have contacted corgi as the boiler manufacturer suggested but just wanted to get some more advise please, desperate now as the noise is waking me up through the night and also the baby !!