Key Features:
- Walls: R-52 double-wall with 2×6 24″ o.c. outer wall, 2×4 24″ o.c. inner wall for 12″ cavity with 3″ closed-cell spray foam plus 9″ blown fiberglass; coated OSB sheathing with seams taped, 3⁄8″ woven plastic rain screen. Poly fly ash lap, cedar, and stone siding.
- Roof: 6 ft ice-and-water shield at eaves; synthetic vapor-permeable underlayment; asphalt shingles.
- Attic: R-70 22” blown fiberglass in vented attic with 24″ raised heel trusses.
- Foundation: Conditioned crawlspace with 2″ rigid foam on each side of foundation walls for R-22 total wall; 4″ R-20 rigid foam under garage slab.
- Windows: Aluminum-clad, triple-pane, low-e, air-filled, U=0.20, SHGC=0.50.
- Air Sealing: 0.92 ACH 50.
- Ventilation: HRV.
- HVAC: Ductless mini-split heat pumps, 12 HSPF, 26 SEER.
- Hot Water: 58-gal direct-vent gas water heater, .81 EF.
- Lighting: 100% LED
- Appliances: ENERGY STAR refrigerator, clothes dryer.
- Solar: 6.2-kW PV.
- Water Conservation: All faucets EPA WaterSense certified; push-button recirc pump.
- Energy Management System: Automated controls of lighting, security, and HVAC. Webbased tracking of electric production and usage.
- Other: Low-VOC, electric car charging station, EPA Indoor airPLUS qualified home.
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