Gilbert Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2B (hot-dry). Gilbert's southeast valley Phoenix metro position produces extreme desert conditions — 110°F cooling design and 31°F heating design. Above-average home sizes in Gilbert create correspondingly large absolute cooling loads.

Energy Code & Manual J Requirement: Arizona Residential Energy Code (IECC 2018). ACCA Manual J required for residential HVAC permits in Maricopa County and Gilbert jurisdictions.

Local Electric Utility: Salt River Project (SRP)

Building Department: Town of Gilbert Building Safety Division

Local Trade Association: ACCA Arizona Chapter