Boy, I would go with the tankless. I just put on in my home after checking out all the otions. I don't think anything beats a tankless. Other than than what Sam said about going solar
Philip Anderson
HDR Remodeling Berkeley Ca
Go Solar!
Your question is a technical question. We would suggest that you go to our website (http://www.benningtonbuilders.com), to our Vendor Page and contact Plumbing Parts Plus who will be able to answer your question.