Judith Basin, Montana HVAC Climate Zone

Judith Basin is located in IECC Climate Zone 6B (Cold - Dry). Get accurate Manual J load calculations with official design temperatures for Judith Basin.

Climate Zone
6B
Winter Design
-13°F
Summer Design
91°F
ZIP Codes
5

Judith Basin HVAC Contractors: Get Your Free Manual J Report

Climate Zone 6B requires precise load calculations. Upload your Judith Basin blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Judith Basin's exact design temperatures (-13°F winter / 91°F summer).

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Verify Your Judith Basin ZIP Code

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

Judith Basin covers 5 ZIP codes: 59447, 59452, 59462, 59469, 59479

Judith Basin Design Temperatures

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

Winter 99% Design Temp
-13°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
62°F

IECC Requirements for Zone 6B

Minimum insulation and window requirements for Judith Basin 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 Judith Basin

Heating Systems

Gas furnace (96%+ AFUE)
Boiler
Typical AFUE
96-98%

Cooling Systems

AC (13-14 SEER, often optional)
Typical SEER
13-14 SEER

Get Free Manual J Calculations for Judith Basin

Upload your Judith Basin blueprint and get a professional Manual J load calculation using official Zone 6B design temperatures. First report is FREE.

Judith Basin design temps
Zone 6B compliant
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