Climate ZonesIllinoisMacoupin

Macoupin, Illinois HVAC Climate Zone

Macoupin is located in IECC Climate Zone 4A (Mixed - Humid). Get accurate Manual J load calculations with official design temperatures for Macoupin.

Climate Zone
4A
Winter Design
13°F
Summer Design
91°F
ZIP Codes
20

Macoupin HVAC Contractors: Get Your Free Manual J Report

Climate Zone 4A requires precise load calculations. Upload your Macoupin blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Macoupin's exact design temperatures (13°F winter / 91°F summer).

Claim Free Report
No credit card required

Verify Your Macoupin ZIP Code

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

Macoupin covers 20 ZIP codes: 62009, 62012, 62014, 62023, 62033, 62063, 62069, 62079, 62085, 62088 and 10 more

Macoupin Design Temperatures

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

Winter 99% Design Temp
13°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
75°F

IECC Requirements for Zone 4A

Minimum insulation and window requirements for Macoupin per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-19
Window U-Factor:0.32
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Macoupin

Heating Systems

Gas furnace (90%+ AFUE)
Heat pump
Typical AFUE
92-96%

Cooling Systems

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

Related Climate Zone Pages

Learn More About
Climate Zone 4A
View All Zones in
Illinois
HVAC Permits for
Macoupin, Illinois

Get Free Manual J Calculations for Macoupin

Upload your Macoupin blueprint and get a professional Manual J load calculation using official Zone 4A design temperatures. First report is FREE.

Macoupin design temps
Zone 4A compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Macoupin contractors who trust AutoHVAC