Yep - Chris hit it in the button. The idea is the ability to control coil temps. In my case of choosing this method (other than a great challenge) was easier distribution of the air with efficiency. I just run insulated water lines to multiple air exchangers. I'm still working out kinks - like water pressure / rate / flow / plate temps etc...
Very cool Hooligan that you want to go a coach route!!! I'm excited for you. It is a great platform to build on
I love all builds and its the personal touch that makes them all unique be it a skoolie or coach!
I have yet to draw a "nice" layout of my floor plan. It is different than any I have seen. I have a side isle or more so an "S" isle and a near rear kitchen, mid bath, huge front lounge / theater - lol....
It is designed around my needs and common uses rather than a weekender or vacation style unit. I do live fultime in it - so those are main decision factors in layout.
I'll try to sketch something up. As for interior pics - just due to the fact I have so few interior finishing a done / I'm kinda weird about sharing - don't know why, but I like to surprise people with a finished looking product more than my strange way I end up getting there.
But they are coming. I enjoy this forum and its always full of knowledge and ideas