Macon Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Macon's central Georgia piedmont position produces hot, humid summers (96°F/77°F cooling design) and mild winters (25°F heating design). Summer humidity management is important; winter heating is a meaningful but not dominant consideration.

Energy Code & Manual J Requirement: Georgia Energy Code (IECC 2015). ACCA Manual J required for residential HVAC permits in Bibb County and all Macon area jurisdictions.

Local Electric Utility: Georgia Power (Southern Company)

Building Department: Macon-Bibb County Planning & Zoning Building Permits

Local Trade Association: ACCA Georgia Chapter