Cheyenne Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 6B (cold-dry). Cheyenne's high plains location (6,062 ft elevation) produces very cold, dry winters (-6°F heating design) and hot, dry summers (90°F/60°F cooling design). One of the windiest state capitals in the US.

Energy Code & Manual J Requirement: Wyoming Residential Building Code (IECC 2018). ACCA Manual J required for all Laramie County HVAC permit applications.

Local Electric Utility: Rocky Mountain Power (PacifiCorp)

Building Department: City of Cheyenne Building Permits & Inspection

Local Trade Association: PHCC Wyoming / ASHRAE Mountain Desert Chapter