Zero Energy Ready SIP House Coupeville WA

Location: Coupeville, WA

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Awards/Certifications: DOE Zero Energy Ready Home, ENERGY STAR Certified, EPA Indoor AirPLUS

Energy-efficient Whidbey Island home built with SIPs to allow Zero Energy Ready designation from the U.S. Department of Energy

KEY FEATURES
• Path: performance
• Walls: SIP 5-5/8-inch (R-26) panels; corrugated house wrap
• Attic: 9-3/8-inch (R-41) SIPs and 11-3/8-inch (R-50) SIPs
• Foundation: slab on grade with R-20 XPS rigid insulation under slab and R-10 XPS on interior of foundation walls
• Windows: triple-pane, argon-filled, fiberglassframed, Low-e windows with U=0.18 to 0.22 and 0.26 to 0.31 SHGC (higher SHGC on south side for passive solar gains)
• Air Sealing: 1.32 ACH50
• Ventilation: four timer-controlled fans to bring in and exhaust air, HEPA MERV 19 filters
• HVAC: ground-source heat pump, provides hot water for radiant floor heating of 1st and 2nd floor plus all domestic hot water at 14.67 HSPF, COP=4.3
• Hot Water: ground-source heat pump with desuperheater
• Lighting: 10% LED; 90% CFL; 3 ENERGY STAR ceiling fans
• Appliances: ENERGY STAR dishwasher, clothes washer, refrigerator; all lowest energy use in their categories.
• Solar: solar ready with branch panel located in attic.
• Water Conservation: 100% xeriscaped with native drought-tolerant plants (no irrigation needed)
• EPA WaterSense Fixtures: all shower heads, lav faucets, toilets
• Other: thermal mass concrete floors, passive solar design
• Electric Car Charging Ctation: not installed but roughed in

DOE project link: Zero Energy Ready SIP House Coupeville WA

To explore other Zero Energy Ready Homes, visit the Department of Energy’s Tour of Zero page.

Documents

• DoE Zero Energy Ready SIP Home Coupeville WA

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