I don't know how much you 'poked' around the site but if you didn't get to this page, 'Shoule I Convert', take another minute to do so.
Also, take the same 'link' and cut out all the 'stuff', except the www.aceee.org part, and press enter. It's the home page. From there, there is more info. Some of the links may not apply to what you're interested in reading but there are OTHER links on those pages that MIGHT have stuff you're interested in reading. I'm only saying this because there may be more to learn before you decide.
My best to ya and hope this helps.
Jay J -Moderator
PS: The link(s) were courteous of Harold Kestenholz - Hydronic Network. (Thanks Harold. Sorry for not mentioning this in the 1st follow-up ...)