Climate ZonesMichiganHoughton

Houghton, Michigan HVAC Climate Zone

Houghton is located in IECC Climate Zone 7 (Very Cold). Get accurate Manual J load calculations with official design temperatures for Houghton.

Climate Zone
7
Winter Design
-18°F
Summer Design
87°F
ZIP Codes
17

Houghton HVAC Contractors: Get Your Free Manual J Report

Climate Zone 7 requires precise load calculations. Upload your Houghton blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Houghton's exact design temperatures (-18°F winter / 87°F summer).

Claim Free Report
No credit card required

Verify Your Houghton ZIP Code

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

Houghton covers 17 ZIP codes: 49905, 49913, 49916, 49917, 49921, 49922, 49930, 49931, 49934, 49942 and 7 more

Houghton Design Temperatures

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

Winter 99% Design Temp
-18°F
Summer 1% Design Temp
87°F
Summer Wet Bulb
70°F

IECC Requirements for Zone 7

Minimum insulation and window requirements for Houghton per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-60
Floor Insulation:R-38
Window U-Factor:0.3
Window SHGC:0.45

Energy Code: 2020 IECC

Recommended HVAC Equipment for Houghton

Heating Systems

Gas furnace (97%+ AFUE)
Boiler
Cold climate heat pump with backup
Typical AFUE
97-98.5%

Cooling Systems

AC (minimal, 13 SEER)
Typical SEER
13 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 7
View All Zones in
Michigan
HVAC Permits for
Houghton, Michigan

Get Free Manual J Calculations for Houghton

Upload your Houghton blueprint and get a professional Manual J load calculation using official Zone 7 design temperatures. First report is FREE.

Houghton design temps
Zone 7 compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Houghton contractors who trust AutoHVAC