Raleigh Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Raleigh's North Carolina Piedmont location produces hot, humid summers (94°F/75°F cooling design), moderate winters with ice storm risk (20°F heating design), and significant latent cooling loads throughout the summer season.

Energy Code & Manual J Requirement: North Carolina Residential Building Code (IECC 2015 with NC amendments). ACCA Manual J required for Wake County and all Triangle region HVAC permits.

Local Electric Utility: Duke Energy Progress

Building Department: City of Raleigh Planning & Development Department

Local Trade Association: ACCA Carolina Chapter / ASHRAE Carolinas Chapter