I was not too excited about having to replace another of the old style instant hot water heater. When I found out they were no longer available and that the least expensive of the new style was about $100 more I was even less excited. However this is a much improved product in many ways. Time will tell how long it will last but it produces a lot more hot water and the design seems to allow for expansion which I suspect was the reason the old style attached tank would fail so quickly. My only complaint is that the top tube does not swivel so it doesn't appear you can switch the button to the other side or swivel out of the way. Maybe it does but I didn't want to break it by trying.