I have had problems with the after care. The boiler was installed on September 11th and the engineer left a piece of equipment behind so came back to collect this the following day. I explained to him that the pressure had fallen quite a lot overnight, so there may be something wrong either with the boiler or the radiators (a leak in the system). He said that normally if there is a leak there tends to be water somewhere, and to ask my neighbour downstairs. There is no evidence of water anywhere and having asked my neighbour everything is apparently fine. Anyway 2/3 weeks later the pressure fell again. Two days ago (November 26th) I called the office, and the engineer now says that he had already checked the radiators (he didn't check all of them) and there was no water, and that it was a brand new boiler and the culprit is probably "a very small leak" somewhere but they are not coming back (so much for the 10 year guarantee) because he had already been here and everything was fine, and their guarantee only covers the boiler, not the leaks. So I adjust the pressure again, and it falls again in two days, by quite a lot. So if the leak is so small, how come the pressure falls again in just two days? And even if they don't cover the leaks, only the boiler, can they not come to check that the boiler is OK, and if it is not, then help me find the leak? I will have to go to another one in Crystal Palace.