Hi there, interesting design.
I can provide some insight on your project. With that design, I would consiider using a ductless Air and Heating system. I have put them in two SIP homes I have done.
There are no ducts to worry about and they are much more cost effective in the long run. Each room has a fan, digital thermostat, and condensation line small enough to run with other electrical wiring. Also, if you have any roof spans more than 14', I would use Steel Sips, as they can span up to about 25' without other bearing beams. Steel SIPs are lighter, and more managable to place in the track from a floor elevated off the ground. If you would like more info on your project, please contact me at
[email protected]Charles
"Leading the Construction Industry out of the Woods"