Phoenix Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2B (hot-dry). Phoenix is one of the hottest major cities in the US, with 111°F cooling design and 34°F heating design. Sensible cooling loads dominate, with minimal latent load due to low humidity.

Energy Code & Manual J Requirement: Arizona Residential Building Code (IECC 2018 with amendments). ACCA Manual J required for all Maricopa County HVAC permit applications.

Local Electric Utility: Arizona Public Service (APS)

Building Department: City of Phoenix Planning & Development Department

Local Trade Association: ACCA Arizona Chapter / ASHRAE Arizona Chapter / SMACNA Arizona