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2021 Virginia Residential Energy Code Resources

On behalf of Viridiant, the Virginia Department of Housing and Community Development, and the Southeast Energy Efficiency Alliance, we are pleased to share the 2021 Virginia Residential Energy Code Guide Book. 

These resources are intended to support and provide deeper context and understanding of the implementation of the 2021 Virginia Residential Energy Code (Energy Code). Should there be a conflict between these resources and the Energy Code, the Energy Code takes precedence.

2021 Virginia Energy Code Guide
General Provisions and Compliance Pathways
  • New Climate Zones for 24 Jurisdictions
  • Expanded Compliance Path Options
  • Additional Efficiency Packages
  • Certificate
  • Certificate Template
The Thermal Envelope – Insulation and Air-Sealing
  • Updates to U-Factor & R-Value Tables by Climate Zone and Building Component
  • Overhead Insulation Details
  • Floor Insulation Strategies
  • Slab Edge Insulation
  • Air Sealing and Insulation Requirements and Resources
  • Blower Door Template
Mechanical Systems – HVAC and Domestic Hot Water
  • Programmable Thermostat Requirements
  • Duct Buried Within Insulation
  • Duct Leakage Testing
  • Duct Leakage Report Template
  • Hot Water Pipe Insulation
  • Ventilation Equipment Performance and Efficiency
  • Heating/Cooling Design, Equipment, and Installation Requirements and Resources
Electrical and Lighting Systems
  • Lighting Controls and Automation
Additional Resources
  • Unvented Crawl Spaces
  • Jack A. Proctor Building Code Academy
  • Recommended Practices for Remote Inspection
Read the Full Code Guide
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