Dayton Climate Zone & Energy Code
Climate Zone: IECC Climate Zone 5A (cold-humid). Heating design 4°F, cooling design 90°F/75°F.
Energy Code & Manual J Requirement: Ohio adopted IECC 2018 as the state energy code. ACCA Manual J is required for all HVAC permit applications in Montgomery County.
Local Electric Utility: AES Ohio (formerly Dayton Power & Light, DP&L)
Building Department: City of Dayton Department of Planning, Neighborhoods & Development
Local Trade Association: ACCA Ohio Chapter / ASHRAE Ohio Valley Chapter