Norman Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 3A (mixed-humid). Norman's Cleveland County location shares OKC metro's climate: 99°F/74°F cooling design and 13°F heating design. Moore (in Cleveland County) is in a high-tornado-risk area.

Energy Code & Manual J Requirement: Oklahoma Residential Energy Code (IECC 2018). ACCA Manual J required for Cleveland County and Norman area HVAC permit applications.

Local Electric Utility: OG&E (Oklahoma Gas & Electric)

Building Department: City of Norman Building & Construction Division

Local Trade Association: ACCA Oklahoma