Sterling Heights Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 5A (cold-humid). Sterling Heights shares the Detroit metro climate — 5°F heating design and 90°F/73°F cooling design. Lake St. Clair proximity provides modest moderation; cold winters, hot humid summers, and lake-effect snow are all significant factors.

Energy Code & Manual J Requirement: Michigan Residential Energy Code (aligned with IECC 2021). ACCA Manual J required for HVAC permits in Macomb County and all Sterling Heights area jurisdictions.

Local Electric Utility: DTE Energy

Building Department: City of Sterling Heights Building Department

Local Trade Association: ACCA Michigan Chapter