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)