I read this article today and checked out the website. I think it could potentially be a good add on item. Same as adding a tank less but lower initial cost.
http://www.ssuchronicle.com/2015/09...ter-from-any-water-heater-announced-by-seisco
http://www.seiscosupercharger.com/
http://www.ssuchronicle.com/2015/09...ter-from-any-water-heater-announced-by-seisco
http://www.seiscosupercharger.com/