Indianapolis Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 5A (cold-humid). Indianapolis has a continental climate with hot, humid summers (90°F/72°F cooling design) and cold winters (2°F heating design). Both cooling and heating loads drive equipment sizing.

Energy Code & Manual J Requirement: Indiana Residential Building Code (IECC 2018). ACCA Manual J required for residential HVAC permits in Marion County and all Indianapolis metro jurisdictions.

Local Electric Utility: Duke Energy Indiana

Building Department: City of Indianapolis / Marion County Contractor Licensing & Building Services

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