I am fully aware of what they are, we stopped building them for a reason. They are hell to live in. You get the bare minimum air exchange as required by code.

I am fully aware of what they are, we stopped building them for a reason. They are hell to live in. You get the bare minimum air exchange as required by code. Try being in such a building for a day. Properly constructed passive buildings use thermal mass to maintain comfortable temperatures while allowing proper ventilation.