Juneau Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 7 (very cold/subarctic maritime). Juneau's maritime influence produces milder winters than interior Alaska (9°F heating design) but persistent high humidity, heavy rainfall, and cool summers. Moisture management is a critical HVAC consideration year-round.

Energy Code & Manual J Requirement: Alaska Building Energy Efficiency Standard (BEES). The City and Borough of Juneau enforces BEES alongside local building codes. ACCA Manual J required for HVAC sizing. Southeast Alaska's climate zone requires high-performance envelopes emphasizing vapor control and moisture management.

Local Electric Utility: Alaska Electric Light & Power (AEL&P)

Building Department: City and Borough of Juneau Building Department

Local Trade Association: ASHRAE Alaska Chapter