How do you HVAC a room without screwing up front and rear wave interaction when you must condition the room and the attic?
I'm doing a dedicated building this summer for an IB build with 20x28 ft sturcture. This is in Oregon with typically mild summers and winters. I plan on having a ventless attic, with walls and attic sealed with spray polyurethane foam insulation. Although I am in an isolated area and I don't need to worry about too much soundproofing, but the ventless attic seemed to be the best way to not disturb neighbors (about 150ft away).
I need a minimal HVAC system to just condition the 560 square foot room. The tightly sealed building needs some filtered exchange for outside air. I'm imagining a ductless heat pump like the one Mitsubishi sells inside the room (just has a small hole in the wall to run power and refrigerant.) The smaller units are extremely quiet. Then I'll need a small blower in the attic exchange outside air, filter it, and circulate it around the room and the attic.
So how do you accomplish that task without compromising your IB array??