Arlington Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2A (hot-humid). Arlington's central DFW position produces hot Texas summers (100°F/74°F cooling design) and cold winters with ice storm potential (22°F heating design). Both heating and cooling require robust system capacity.

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

Local Electric Utility: Oncor Electric Delivery

Building Department: City of Arlington Development Services Department

Local Trade Association: ACCA Texas / ASHRAE Dallas Chapter