"It's so quiet inside, we barely hear any exterior sounds."


Key Features

  • Walls: SIPs, R-30: 6.5" graphite SIP panel (R-29), house wrap, fiber cement.
  • Roof: SIP gable roof: 10.25" R-49 graphite-EPS SIPs, asphalt composite roofing.
  • Attic: No attic, vaulted ceilings.
  • Foundation: R-23.6 Slab on grade: 11.25" ICF stem walls.
  • Windows: Triple-pane, argon-filled, low-e3, vinyl frame, U=0.15-0.22, SHGC=0.27-0.46.
  • Air Sealing: 0.47 ACH50, all SIP joints taped and sealed with double-bead mastic tape. Whole-house aerosol sealant.
  • Ventilation: HRV, HEPA filter, CO2 sensor, 88 SRE, 110 CFM, 32 Watts.
  • HVAC: Air-to-water heat pump with 50% central air handler, 50% radiant, 3.92 COP, AC variable speed compressor, 23.02 EER.
  • Hot Water: Combi air-to-water heat pump for space and water heating, 50-gal, 3.92 COP, electric tankless back-up water heater.
  • Lighting: 100% LED.
  • Appliances: ENERGY STAR refrigerator, dishwasher, clothes washer.
  • Solar: 12.87 kW, rooftop panels.
  • Water Conservation: EPA WaterSense fixtures, rainwater collection system.
  • Energy Management System: PV production and usage monitoring.
  • Other: EV charging, accessible floorplan, doorways. No-VOC paint, cabinets.

Building Specifications

Conditioned Area 2,614 ft2
Bedrooms 4
Bathrooms 3
Stories 2
Climate Zone 4C
Completion Date February 2021

Modeled Performance

  With PV No PV
HERS Index -22 35
Annual Energy Cost ($350.00) $700.00
Annual Energy Cost Savings $2,550.00 $1,500.00
Annual Energy Savings 24,300 kWh 12,100 kWh
First 30 Years Savings $103,500.00 $61,700.00