Baton Rouge Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2A (hot-humid). Baton Rouge's Mississippi River location produces hot, very humid subtropical conditions year-round. The 78°F wet-bulb cooling design reflects very high latent loads that make dehumidification a primary HVAC design priority.

Energy Code & Manual J Requirement: Louisiana Energy Code (IECC 2021 with Louisiana amendments). ACCA Manual J required for HVAC permits in East Baton Rouge Parish and all Capital Region jurisdictions.

Local Electric Utility: Entergy Louisiana

Building Department: City of Baton Rouge / East Baton Rouge Parish Department of Development

Local Trade Association: ACCA Louisiana / ASHRAE Louisiana Chapter