Climate ZonesCaliforniaImperial

Imperial, California HVAC Climate Zone

Imperial is located in IECC Climate Zone 2B (Hot - Dry). Get accurate Manual J load calculations with official design temperatures for Imperial.

Climate Zone
2B
Winter Design
31°F
Summer Design
108°F
ZIP Codes
14

Imperial HVAC Contractors: Get Your Free Manual J Report

Climate Zone 2B requires precise load calculations. Upload your Imperial blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Imperial's exact design temperatures (31°F winter / 108°F summer).

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Verify Your Imperial ZIP Code

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

Imperial covers 14 ZIP codes: 92227, 92231, 92233, 92243, 92249, 92250, 92251, 92257, 92259, 92266 and 4 more

Imperial Design Temperatures

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

Winter 99% Design Temp
31°F
Summer 1% Design Temp
108°F
Summer Wet Bulb
71°F

IECC Requirements for Zone 2B

Minimum insulation and window requirements for Imperial per IECC 2021.

Wall Insulation:R-13
Roof/Ceiling:R-30
Floor Insulation:R-13
Window U-Factor:0.4
Window SHGC:0.25

Energy Code: 2022 Title 24

Recommended HVAC Equipment for Imperial

Heating Systems

Gas furnace
Heat pump
Electric resistance
Typical AFUE
80-90%

Cooling Systems

AC (14-16 SEER)
Evaporative cooling (swamp cooler)
Typical SEER
14-16 SEER

Related Climate Zone Pages

Learn More About
Climate Zone 2B
View All Zones in
California
HVAC Permits for
Imperial, California

Get Free Manual J Calculations for Imperial

Upload your Imperial blueprint and get a professional Manual J load calculation using official Zone 2B design temperatures. First report is FREE.

Imperial design temps
Zone 2B compliant
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