YES — Louisiana has adopted 2021 IECC which requires HVAC loads be calculated per ACCA Manual J for new construction and major renovations.
Louisiana has adopted 2021 IECC as the statewide energy code for residential construction.
Primary zone covering New Orleans and surrounding areas
Additional zone in Louisiana
Local Louisiana contractors typically charge $150-400 for Manual J calculations. AutoHVAC offers your first Manual J calculation completely FREE with permit-ready results in 60 seconds — no credit card required.
Yes. Louisiana follows 2021 IECC which requires heating and cooling loads be calculated per ACCA Manual J for permits on new construction and major HVAC work.
You can get a free Manual J calculation for Louisiana instantly at AutoHVAC — upload your blueprint and receive a permit-ready report in 60 seconds. Alternatively, local Louisiana HVAC contractors charge $150-400 with 3-7 day turnaround, or you can use DIY software like Wrightsoft or CoolCalc ($5-200+/month).
Louisiana includes IECC climate zones 2A, 3A. Zone 2A is most common, covering cities like New Orleans, Baton Rouge, Shreveport. Climate zone data determines design temperatures and insulation requirements used in Manual J calculations.
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