Grand Forks Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 7 (very cold). Grand Forks's northern Red River valley location is among the coldest in the continental US — -26°F heating design — with flat terrain and exposure to unobstructed Arctic air flows from the Canadian prairies.

Energy Code & Manual J Requirement: North Dakota State Building Code (IECC 2021). ACCA Manual J required for Grand Forks County HVAC permits.

Local Electric Utility: Xcel Energy

Building Department: City of Grand Forks Building Inspection Department

Local Trade Association: PHCC North Dakota / ASHRAE Dakotas Chapter