Medford Climate Zone & Energy Code

Climate Zone: IECC Climate Zone 4B (mixed dry). Medford's inland Rogue Valley position produces Oregon's most demanding cooling conditions — 101°F cooling design — while still experiencing cold winters (22°F heating design). Both heating and cooling require significant HVAC capacity.

Energy Code & Manual J Requirement: Oregon Energy Code (IECC 2021). ACCA Manual J required for residential HVAC permits in Jackson County and Medford jurisdictions.

Local Electric Utility: Pacific Power (PacifiCorp)

Building Department: City of Medford Building Division

Local Trade Association: PHCC Oregon / ASHRAE Oregon Chapter