Climate ZonesIdahoLatah

Latah, Idaho HVAC Climate Zone

Latah is located in IECC Climate Zone 5B (Cool - Dry). Get accurate Manual J load calculations with official design temperatures for Latah.

Climate Zone
5B
Winter Design
-7°F
Summer Design
91°F
ZIP Codes
11

Latah HVAC Contractors: Get Your Free Manual J Report

Climate Zone 5B requires precise load calculations. Upload your Latah blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Latah's exact design temperatures (-7°F winter / 91°F summer).

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Verify Your Latah ZIP Code

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

Latah covers 11 ZIP codes: 83535, 83537, 83806, 83823, 83832, 83834, 83843, 83855, 83857, 83871 and 1 more

Latah Design Temperatures

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

Winter 99% Design Temp
-7°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
63°F

IECC Requirements for Zone 5B

Minimum insulation and window requirements for Latah 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 Latah

Heating Systems

Gas furnace (95%+ AFUE)
Typical AFUE
95-98%

Cooling Systems

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

Related Climate Zone Pages

Learn More About
Climate Zone 5B
View All Zones in
Idaho
HVAC Permits for
Latah, Idaho

Get Free Manual J Calculations for Latah

Upload your Latah blueprint and get a professional Manual J load calculation using official Zone 5B design temperatures. First report is FREE.

Latah design temps
Zone 5B compliant
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