Ditto a thousand times to what you have said. It is a piece of crap/ I have the NCB 180 e. First the igniter was diagnosed WRONG . @months down the road and no hot water. Thank God it is not winter or I would be w/o heat too. My plumber has been here 8 times going over things with tech support (what a joke that dept is). I made two mistakes. First I installed it last year in a new addition, did not fire it up till we moved in two months ago (big mistake) I now only have 6 weeks of labor warranty. Second I bought this piece of junk to begin with. As others have mentioned parts fail one after the other and you only get a warranty on those parts. So it wasn't the igniter and now they say it is the gas valve. If that isn't it well then we go on to the next thing. If that isn't it then we go on to the next thing and obviously there will be a next thing. the tech guy said I have no way of knowing that. BWAHAHAHA. They won't replace the entire unit just one part at a time. I just found out there is a class action suit and they have a recall for possible carbon monoxide poisoning. Of course my unit does not qualify. I wish we made things in this country again, expensive crap from Asia is too damn expensive