YES — North Carolina has adopted 2018 NC Energy Code which requires HVAC loads be calculated per ACCA Manual J for new construction and major renovations.
North Carolina has adopted 2018 NC Energy Code as the statewide energy code for residential construction.
Primary zone covering Charlotte and surrounding areas
Additional zone in North Carolina
Additional zone in North Carolina
Local North Carolina 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. North Carolina follows 2018 NC Energy Code 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 North Carolina instantly at AutoHVAC — upload your blueprint and receive a permit-ready report in 60 seconds. Alternatively, local North Carolina HVAC contractors charge $150-400 with 3-7 day turnaround, or you can use DIY software like Wrightsoft or CoolCalc ($5-200+/month).
North Carolina includes IECC climate zones 3A, 4A, 5A. Zone 3A is most common, covering cities like Charlotte, Raleigh, Greensboro. Climate zone data determines design temperatures and insulation requirements used in Manual J calculations.
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