Norfolk Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Norfolk's coastal tidewater position produces hot, humid summers (92°F/78°F cooling design) and cold winters moderated by the bay (22°F heating design). Coastal humidity requires emphasis on dehumidification and moisture management.

Energy Code & Manual J Requirement: Virginia Energy Code (IECC 2021). ACCA Manual J required for residential HVAC permits in the City of Norfolk and all Hampton Roads jurisdictions.

Local Electric Utility: Dominion Energy Virginia (Dominion Power)

Building Department: City of Norfolk Department of Development

Local Trade Association: ACCA Mid-Atlantic Chapter / ASHRAE Chesapeake Chapter