Net-Zero Resources

Certification

Net-Zero Ready: Meet all design, construction, and diagnostic testing criteria

Net-Zero Certified: 1 year of online energy tracking with neutral or positive bills

• Energy Performance
  • Net Zero Energy (site energy), HERs Index: ≤10
  • Minimum HERs Index prior to renewables: 50
• Diagnostic Testing
  • Infiltration target: 1.5 ACH50
  • Duct leakage: ≤2% leakage to the outside, 10 system airflow capacity leakage
• Envelope
  • Meet or exceed 2012 IECC criteria including RESNET Grade I installation
  •  Windows
    • U Value: ≤30
    • SHGC: ≤0.27
      • High gain windows for south exposure
• HVAC/Ductwork
  • Manual J, D, and S
  • All ductwork located within the thermal envelope, mastic
  • Commissioning: Ventilation and HVAC (system airflow, refrigerant charge, room- room pressure ±3 PA)
• Ventilation
  • Required: 62.2-2010
• Water Heating
  • WaterSense Indoor Criteria
• Lights/Appliances
  • 75% CFL and/or LED
  • Energy Star Appliances
• Renewables
  • Photovoltaic Array, Solar Thermal, and/or Wind Turbine(s)