Spokane Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 5B (cold-dry). Spokane's inland continental climate produces hot, dry summers (94°F/63°F cooling design) and cold winters (4°F heating design) — dramatically different from Seattle's marine climate.

Energy Code & Manual J Requirement: Washington State Energy Code (WSEC). ACCA Manual J required for all Spokane County HVAC permit applications.

Local Electric Utility: Avista Utilities

Building Department: City of Spokane Building & Planning Department

Local Trade Association: ACCA Northwest Chapter / ASHRAE Pacific Northwest Chapter