Reading Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 4A (mixed-humid). Reading's Schuylkill Valley position produces hot, humid summers (92°F/74°F cooling design) and cold winters (11°F heating design). Four-season HVAC is required for both meaningful heating and cooling loads.

Energy Code & Manual J Requirement: Pennsylvania Energy Code (IECC 2021). ACCA Manual J required for residential HVAC permits in Berks County and Reading area jurisdictions.

Local Electric Utility: PPL Electric Utilities

Building Department: City of Reading Department of Inspections

Local Trade Association: ACCA Pennsylvania