Climate ZonesTexasBrazos

What Climate Zone is Brazos, Texas?

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

Climate Zone
2A
Winter Design
32°F
Summer Design
95°F
ZIP Codes
16

Brazos HVAC Contractors: Get Your Free Manual J Report

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

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Verify Your Brazos ZIP Code

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

Brazos covers 16 ZIP codes: 77801, 77802, 77803, 77807, 77808, 77840, 77845, 77866, 77805, 77806 and 6 more

Brazos Design Temperatures

Official ASHRAE design temperatures for Brazos, 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 Brazos 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: 2021 IECC

Recommended HVAC Equipment for Brazos

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
Texas
HVAC Permits for
Brazos, Texas

Get Free Manual J Calculations for Brazos

Upload your Brazos blueprint and get a professional Manual J load calculation using official Zone 2A design temperatures. First report is FREE.

Brazos design temps
Zone 2A compliant
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