Climate ZonesAlaskaLake and Peninsula

What Climate Zone is Lake and Peninsula, Alaska?

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

Climate Zone
7
Winter Design
-18°F
Summer Design
87°F
ZIP Codes
12

Lake and Peninsula HVAC Contractors: Get Your Free Manual J Report

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

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Verify Your Lake and Peninsula ZIP Code

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

Lake and Peninsula covers 12 ZIP codes: 99548, 99549, 99564, 99565, 99579, 99606, 99625, 99640, 99647, 99648 and 2 more

Lake and Peninsula Design Temperatures

Official ASHRAE design temperatures for Lake and Peninsula, 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 Lake and Peninsula 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: 2021 IECC

Recommended HVAC Equipment for Lake and Peninsula

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
Alaska
HVAC Permits for
Lake and Peninsula, Alaska

Get Free Manual J Calculations for Lake and Peninsula

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

Lake and Peninsula design temps
Zone 7 compliant
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