Climate ZonesIllinoisMcHenry

McHenry, Illinois HVAC Climate Zone

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

Climate Zone
5A
Winter Design
0°F
Summer Design
91°F
ZIP Codes
17

McHenry HVAC Contractors: Get Your Free Manual J Report

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Verify Your McHenry ZIP Code

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

McHenry covers 17 ZIP codes: 60012, 60013, 60014, 60021, 60033, 60034, 60042, 60050, 60071, 60072 and 7 more

McHenry Design Temperatures

Official ASHRAE design temperatures for McHenry, 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 McHenry 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 McHenry

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
McHenry, Illinois

Get Free Manual J Calculations for McHenry

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McHenry design temps
Zone 5A compliant
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