Climate ZonesOregonSalem

Salem, Oregon HVAC Climate Zone

Salem is located in IECC Climate Zone 4C (Mixed - Marine). Get accurate Manual J load calculations with official design temperatures for Salem.

Climate Zone
4C
Winter Design
29°F
Summer Design
85°F
ZIP Codes
11

Salem HVAC Contractors: Get Your Free Manual J Report

Climate Zone 4C requires precise load calculations. Upload your Salem blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Salem's exact design temperatures (29°F winter / 85°F summer).

Claim Free Report
No credit card required

Verify Your Salem ZIP Code

Enter your ZIP code to confirm it's in Salem and get climate zone details.

Salem covers 11 ZIP codes: 97301, 97302, 97303, 97304, 97305, 97306, 97307, 97308, 97309, 97310 and 1 more

Salem Design Temperatures

Official ASHRAE design temperatures for Salem, used for accurate Manual J load calculations.

Winter 99% Design Temp
29°F
Summer 1% Design Temp
85°F
Summer Wet Bulb
67°F

IECC Requirements for Zone 4C

Minimum insulation and window requirements for Salem per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-19
Window U-Factor:0.32
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Salem

Heating Systems

Gas furnace
Heat pump
Typical AFUE
92-95%

Cooling Systems

AC (optional)
Heat pump
Typical SEER
14 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 4C
View All Zones in
Oregon
HVAC Permits for
Salem, Oregon

Get Free Manual J Calculations for Salem

Upload your Salem blueprint and get a professional Manual J load calculation using official Zone 4C design temperatures. First report is FREE.

Salem design temps
Zone 4C compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Salem contractors who trust AutoHVAC