Roanoke Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 4A (mixed-humid). Roanoke's mountain valley location produces cooler conditions than coastal Virginia — 91°F/73°F cooling design and 16°F heating design. Elevation variation across the metro can affect local design conditions.

Energy Code & Manual J Requirement: Virginia Uniform Statewide Building Code (IECC 2021). ACCA Manual J required for all Roanoke City/County HVAC permit applications.

Local Electric Utility: Appalachian Power (AEP)

Building Department: City of Roanoke Building Inspection Division

Local Trade Association: ACCA Mid-Atlantic Chapter