Columbus Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Columbus's west Georgia position produces hot, humid summers (96°F/77°F cooling design) and moderately cold winters (23°F heating design). Latent loads are significant; summer humidity management is an important HVAC design consideration.

Energy Code & Manual J Requirement: Georgia Energy Code (IECC 2015). ACCA Manual J required for residential HVAC permits in Muscogee County and Columbus jurisdictions.

Local Electric Utility: Georgia Power (Southern Company)

Building Department: Columbus Consolidated Government Inspections & Code Enforcement

Local Trade Association: ACCA Georgia Chapter