[cougjunkie]

Originally Posted by UteStar

I do not know much about them besides the energy efficiency aspect of it. Here is a website that walks you thru it all, so hopefully it will help answer some of your questions: http://www.eere.energy.gov/consumer/.../mytopic=12820

Here is another site: http://www.gotankless.com/

Let us know what you find out and if you put one in, lets know what you think of it.

yes do the research and then post a full report.