Lowell Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 5A (cold-humid). Heating design 2°F, cooling design 88°F/73°F.

Energy Code & Manual J Requirement: Massachusetts adopted the Massachusetts State Building Code (IECC 2021 base with amendments). ACCA Manual J is required for all HVAC permit applications in Middlesex County.

Local Electric Utility: Eversource Energy

Building Department: City of Lowell Inspectional Services

Local Trade Association: ACCA New England