Bozeman Climate Zone & Energy Code
Climate Zone: IECC Climate Zone 6B (cold-dry). Heating design -10°F, cooling design 88°F/58°F.
Energy Code & Manual J Requirement: Montana adopted IECC 2021 as the state energy code. ACCA Manual J is required for all HVAC permit applications in Gallatin County.
Local Electric Utility: NorthWestern Energy
Building Department: City of Bozeman Community Development Department
Local Trade Association: PHCC Montana / ASHRAE Montana Chapter