Climate ZonesWyomingBig Horn

Big Horn, Wyoming HVAC Climate Zone

Big Horn is located in IECC Climate Zone 6B (Cold - Dry). Get accurate Manual J load calculations with official design temperatures for Big Horn.

Climate Zone
6B
Winter Design
-13°F
Summer Design
91°F
ZIP Codes
13

Big Horn HVAC Contractors: Get Your Free Manual J Report

Climate Zone 6B requires precise load calculations. Upload your Big Horn blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Big Horn's exact design temperatures (-13°F winter / 91°F summer).

Claim Free Report
No credit card required

Verify Your Big Horn ZIP Code

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

Big Horn covers 13 ZIP codes: 82410, 82411, 82412, 82420, 82421, 82422, 82423, 82426, 82428, 82431 and 3 more

Big Horn Design Temperatures

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

Winter 99% Design Temp
-13°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
62°F

IECC Requirements for Zone 6B

Minimum insulation and window requirements for Big Horn per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-30
Window U-Factor:0.3
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Big Horn

Heating Systems

Gas furnace (96%+ AFUE)
Boiler
Typical AFUE
96-98%

Cooling Systems

AC (13-14 SEER, often optional)
Typical SEER
13-14 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 6B
View All Zones in
Wyoming
HVAC Permits for
Big Horn, Wyoming

Get Free Manual J Calculations for Big Horn

Upload your Big Horn blueprint and get a professional Manual J load calculation using official Zone 6B design temperatures. First report is FREE.

Big Horn design temps
Zone 6B compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Big Horn contractors who trust AutoHVAC