Austin Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2A (hot-humid). Austin has long, hot summers (100°F dry-bulb cooling design) and mild but genuine winters (27°F heating design). Latent load management is significant during the humid summer months.

Energy Code & Manual J Requirement: Texas Residential Energy Code (IECC 2015). ACCA Manual J required for Travis, Williamson, and Hays County HVAC permit applications.

Local Electric Utility: Austin Energy (City-owned utility)

Building Department: City of Austin Development Services Department (DSD)

Local Trade Association: ACCA Texas / ASHRAE Texas Gulf Coast Chapter