Originally Posted by Brock
I was thinking of getting one last month, but the plumber talked me out of it. I was completely sold on the idea before that. He told me that most people he knew of who had them weren't satisfied with the amount of hot water they were getting. I wasn't going to take a chance on a couple thousand dollars, but maybe you'll get different advice.
Consumer Reports has said the lack of consistent available hot water is a common issue that owners complain about. Also they need yearly maintenance (usually done by a plumber) to keep them in good working order. Cleaning scale deposits, etc.