Silver Spring Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 4A (mixed-humid). Heating design 12°F, cooling design 92°F/75°F.

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

Local Electric Utility: Pepco (Potomac Electric Power / Exelon)

Building Department: Montgomery County Department of Permitting Services (DPS)

Local Trade Association: ACCA Mid-Atlantic Chapter