Plano Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 2A (hot-humid). Plano's north Dallas position produces hot Texas summers (100°F/74°F cooling design) and cold winters with ice storm potential (22°F heating design). Premium residential market demands premium HVAC system documentation.

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

Local Electric Utility: Oncor Electric Delivery

Building Department: City of Plano Development Services Department

Local Trade Association: ACCA Texas / ASHRAE Dallas Chapter