Climate ZonesMontanaSanders

Sanders, Montana HVAC Climate Zone

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

Climate Zone
6B
Winter Design
-13°F
Summer Design
91°F
ZIP Codes
7

Sanders HVAC Contractors: Get Your Free Manual J Report

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

Claim Free Report
No credit card required

Verify Your Sanders ZIP Code

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

Sanders covers 7 ZIP codes: 59831, 59844, 59848, 59853, 59859, 59873, 59874

Sanders Design Temperatures

Official ASHRAE design temperatures for Sanders, 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 Sanders 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 Sanders

Heating Systems

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

Cooling Systems

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

Related Climate Zone Pages

Learn More About
Climate Zone 6B
View All Zones in
Montana
HVAC Permits for
Sanders, Montana

Get Free Manual J Calculations for Sanders

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

Sanders design temps
Zone 6B compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Sanders contractors who trust AutoHVAC