Passive home HVAC design

I have a mechanical engineer who says he’s done Passive home design. My new home design is 6,000 s.f. in climate zone 4A with a SIP house exterior walls and… I have a mechanical engineer who says he’s done Passive home design. My new home design is 6,000 s.f. in climate zone 4A with a SIP house exterior walls and…Read MoreGreenBuildingAdvisor