Jackson Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Jackson's central Mississippi location produces very hot, humid summers (97°F/77°F cooling design) and variable winters with occasional freezing events (23°F heating design). Cooling and dehumidification dominate the HVAC design.

Energy Code & Manual J Requirement: Mississippi State Building Code (IECC 2009). ACCA Manual J required for residential HVAC permits in Hinds County and surrounding jurisdictions.

Local Electric Utility: Entergy Mississippi

Building Department: City of Jackson Planning & Development Department

Local Trade Association: ASHRAE Mississippi Chapter / PHCC Mississippi