Climate ZonesMichiganAlpena

Alpena, Michigan HVAC Climate Zone

Alpena is located in IECC Climate Zone 6A (Cold - Humid). Get accurate Manual J load calculations with official design temperatures for Alpena.

Climate Zone
6A
Winter Design
-9°F
Summer Design
89°F
ZIP Codes
5

Alpena HVAC Contractors: Get Your Free Manual J Report

Climate Zone 6A requires precise load calculations. Upload your Alpena blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Alpena's exact design temperatures (-9°F winter / 89°F summer).

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Verify Your Alpena ZIP Code

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

Alpena covers 5 ZIP codes: 49707, 49744, 49747, 49753, 49766

Alpena Design Temperatures

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

Winter 99% Design Temp
-9°F
Summer 1% Design Temp
89°F
Summer Wet Bulb
73°F

IECC Requirements for Zone 6A

Minimum insulation and window requirements for Alpena 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: 2020 IECC

Recommended HVAC Equipment for Alpena

Heating Systems

Gas furnace (96%+ AFUE)
Boiler
Cold climate heat pump
Typical AFUE
96-98%

Cooling Systems

AC (13-15 SEER)
Typical SEER
13-15 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 6A
View All Zones in
Michigan
HVAC Permits for
Alpena, Michigan

Get Free Manual J Calculations for Alpena

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Alpena design temps
Zone 6A compliant
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