YES — Oregon has adopted 2021 Oregon Energy Code which requires HVAC loads be calculated per ACCA Manual J for new construction and major renovations.
Oregon has adopted 2021 Oregon Energy Code as the statewide energy code for residential construction.
Primary zone covering Portland and surrounding areas
Additional zone in Oregon
Local Oregon 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. Oregon follows 2021 Oregon 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 Oregon instantly at AutoHVAC — upload your blueprint and receive a permit-ready report in 60 seconds. Alternatively, local Oregon HVAC contractors charge $150-400 with 3-7 day turnaround, or you can use DIY software like Wrightsoft or CoolCalc ($5-200+/month).
Oregon includes IECC climate zones 4C, 5B. Zone 4C is most common, covering cities like Portland, Salem, Eugene. Climate zone data determines design temperatures and insulation requirements used in Manual J calculations.
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