Climate ZonesOklahomaOkmulgee

Okmulgee, Oklahoma HVAC Climate Zone

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

Climate Zone
3A
Winter Design
22°F
Summer Design
94°F
ZIP Codes
7

Okmulgee HVAC Contractors: Get Your Free Manual J Report

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

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Verify Your Okmulgee ZIP Code

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Okmulgee covers 7 ZIP codes: 74421, 74431, 74437, 74445, 74447, 74456, 74460

Okmulgee Design Temperatures

Official ASHRAE design temperatures for Okmulgee, 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 Okmulgee 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 Okmulgee

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
Oklahoma
HVAC Permits for
Okmulgee, Oklahoma

Get Free Manual J Calculations for Okmulgee

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Okmulgee design temps
Zone 3A compliant
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