Climate ZonesMississippiYazoo

Yazoo, Mississippi HVAC Climate Zone

Yazoo is located in IECC Climate Zone 3A (Warm - Humid). Get accurate Manual J load calculations with official design temperatures for Yazoo.

Climate Zone
3A
Winter Design
22°F
Summer Design
94°F
ZIP Codes
6

Yazoo HVAC Contractors: Get Your Free Manual J Report

Climate Zone 3A requires precise load calculations. Upload your Yazoo blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Yazoo's exact design temperatures (22°F winter / 94°F summer).

Claim Free Report
No credit card required

Verify Your Yazoo ZIP Code

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

Yazoo covers 6 ZIP codes: 39039, 39040, 39088, 39162, 39179, 39194

Yazoo Design Temperatures

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

Winter 99% Design Temp
22°F
Summer 1% Design Temp
94°F
Summer Wet Bulb
75°F

IECC Requirements for Zone 3A

Minimum insulation and window requirements for Yazoo per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-30
Floor Insulation:R-19
Window U-Factor:0.32
Window SHGC:0.25

Energy Code: 2021 IECC

Recommended HVAC Equipment for Yazoo

Heating Systems

Gas furnace
Heat pump
Typical AFUE
90-95%

Cooling Systems

AC (14-16 SEER)
Heat pump
Typical SEER
14-16 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 3A
View All Zones in
Mississippi
HVAC Permits for
Yazoo, Mississippi

Get Free Manual J Calculations for Yazoo

Upload your Yazoo blueprint and get a professional Manual J load calculation using official Zone 3A design temperatures. First report is FREE.

Yazoo design temps
Zone 3A compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Yazoo contractors who trust AutoHVAC