Atlanta Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Atlanta's elevated location (1,000 ft) produces hot, humid summers (92°F/74°F cooling design) and meaningful winters (22°F heating design). Both cooling and heating loads are significant.

Energy Code & Manual J Requirement: Georgia State Minimum Standard Energy Code (IECC 2015). ACCA Manual J required for all Atlanta metro HVAC permit applications.

Local Electric Utility: Georgia Power (Southern Company)

Building Department: City of Atlanta Office of Buildings

Local Trade Association: ACCA Georgia Chapter / ASHRAE Georgia Chapter / SMACNA Georgia