Stamford Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 5A (cold-humid). Heating design 9°F, cooling design 89°F/74°F.

Energy Code & Manual J Requirement: Connecticut adopted IECC 2021 as the state energy code. ACCA Manual J is required for all HVAC permit applications in Fairfield County.

Local Electric Utility: Eversource Energy (Connecticut Light & Power)

Building Department: City of Stamford Building Division

Local Trade Association: ACCA New England / ASHRAE Connecticut Chapter