Bangor Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 7 (very cold). Bangor's inland central Maine location produces very cold winters (-6°F heating design) with no coastal moderation, and modest summers (84°F cooling design). Heating load calculations are the critical Manual J output.

Energy Code & Manual J Requirement: Maine Uniform Building and Energy Code (MUBEC), IECC 2021 base. ACCA Manual J required for residential HVAC permits. Penobscot County and Bangor area municipalities enforce MUBEC.

Local Electric Utility: Versant Power (formerly Emera Maine)

Building Department: City of Bangor Department of Code Enforcement & Inspection Services

Local Trade Association: PHCC Maine / ASHRAE Maine Chapter