Laredo Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2B (hot-dry). Laredo's south Texas position produces extreme heat (101°F cooling design) with relatively low humidity compared to coastal Texas — the driest major city in Texas. Sensible cooling loads dominate; latent loads are lower than east Texas markets.

Energy Code & Manual J Requirement: Texas Energy Code (IECC 2015, Texas modified). ACCA Manual J required for residential HVAC permits in Webb County and all Laredo area jurisdictions.

Local Electric Utility: AEP Texas (Central) / Laredo Utilities

Building Department: City of Laredo Building Development Services

Local Trade Association: ACCA Texas