Climate ZonesLouisianaJefferson Davis

What Climate Zone is Jefferson Davis, Louisiana?

Jefferson Davis is in IECC Climate Zone 2A (Hot - Humid). Get accurate Manual J load calculations with official design temperatures for Jefferson Davis.

Climate Zone
2A
Winter Design
32°F
Summer Design
95°F
ZIP Codes
7

Jefferson Davis HVAC Contractors: Get Your Free Manual J Report

Climate Zone 2A requires precise load calculations. Upload your Jefferson Davis blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Jefferson Davis's exact design temperatures (32°F winter / 95°F summer).

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Verify Your Jefferson Davis ZIP Code

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

Jefferson Davis covers 7 ZIP codes: 70532, 70546, 70549, 70581, 70591, 70640, 70650

Jefferson Davis Design Temperatures

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

Winter 99% Design Temp
32°F
Summer 1% Design Temp
95°F
Summer Wet Bulb
77°F

IECC Requirements for Zone 2A

Minimum insulation and window requirements for Jefferson Davis per IECC 2021.

Wall Insulation:R-13
Roof/Ceiling:R-30
Floor Insulation:R-13
Window U-Factor:0.4
Window SHGC:0.25

Energy Code: 2015 IECC

Recommended HVAC Equipment for Jefferson Davis

Heating Systems

Gas furnace
Heat pump
Electric resistance
Typical AFUE
80-92%

Cooling Systems

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

Related Climate Zone Pages

Learn More About
Climate Zone 2A
View All Zones in
Louisiana
HVAC Permits for
Jefferson Davis, Louisiana

Get Free Manual J Calculations for Jefferson Davis

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Jefferson Davis design temps
Zone 2A compliant
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