HRV duct set up
I am getting ready to install my HRV. I have been contemplating exhaust in the two bathrooms, three bedrooms, and kitchen area, with only one supply duct in the great room near my mini-split. 1300 square feet, one level, 3 1/2″ exterior foam, 6″ fiberglass batts, unvented sealed crawl space. The design person at the HRV store is said I should have supply to all bedrooms and just exhaust the bathrooms/kitchen. Climate Zone 7, so I am a little concerned about supplying all that fresh air to the bedrooms in the dead of winter. I am getting for my first blower test tomorrow, after which I will install the fiberglass between studs and get ready to sheet rock. Also need to install my duct work for the HRV soon so I can sheetrock the ceiling. Duct work will be in conditioned chase created by 2×6 joists with OSB then plastic sheeting, then roof trusses with blown insulation in the vented attic. Any comments would be appreciated.