Climate ZonesIllinoisBureau

Bureau, Illinois HVAC Climate Zone

Bureau is located in IECC Climate Zone 5A (Cool - Humid). Get accurate Manual J load calculations with official design temperatures for Bureau.

Climate Zone
5A
Winter Design
0°F
Summer Design
91°F
ZIP Codes
24

Bureau HVAC Contractors: Get Your Free Manual J Report

Climate Zone 5A requires precise load calculations. Upload your Bureau blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Bureau's exact design temperatures (0°F winter / 91°F summer).

Claim Free Report
No credit card required

Verify Your Bureau ZIP Code

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

Bureau covers 24 ZIP codes: 61312, 61314, 61315, 61317, 61320, 61322, 61323, 61328, 61329, 61330 and 14 more

Bureau Design Temperatures

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

Winter 99% Design Temp
0°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
75°F

IECC Requirements for Zone 5A

Minimum insulation and window requirements for Bureau per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-30
Window U-Factor:0.3
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Bureau

Heating Systems

Gas furnace (95%+ AFUE)
Boiler
Heat pump (cold climate)
Typical AFUE
95-98%

Cooling Systems

AC (13-16 SEER)
Heat pump
Typical SEER
13-16 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 5A
View All Zones in
Illinois
HVAC Permits for
Bureau, Illinois

Get Free Manual J Calculations for Bureau

Upload your Bureau blueprint and get a professional Manual J load calculation using official Zone 5A design temperatures. First report is FREE.

Bureau design temps
Zone 5A compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Bureau contractors who trust AutoHVAC