Santa Clara, California HVAC Climate Zone

Santa Clara is located in IECC Climate Zone 3C (Warm - Marine). Get accurate Manual J load calculations with official design temperatures for Santa Clara.

Climate Zone
3C
Winter Design
41°F
Summer Design
81°F
ZIP Codes
26

Santa Clara HVAC Contractors: Get Your Free Manual J Report

Climate Zone 3C requires precise load calculations. Upload your Santa Clara blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Santa Clara's exact design temperatures (41°F winter / 81°F summer).

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Verify Your Santa Clara ZIP Code

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

Santa Clara covers 26 ZIP codes: 94022, 94024, 94040, 94041, 94043, 94086, 94087, 94089, 94301, 94304 and 16 more

Santa Clara Design Temperatures

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

Winter 99% Design Temp
41°F
Summer 1% Design Temp
81°F
Summer Wet Bulb
63°F

IECC Requirements for Zone 3C

Minimum insulation and window requirements for Santa Clara per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-30
Floor Insulation:R-19
Window U-Factor:0.32
Window SHGC:0.4

Energy Code: 2022 Title 24

Recommended HVAC Equipment for Santa Clara

Heating Systems

Gas furnace
Heat pump
Typical AFUE
90-95%

Cooling Systems

AC (often optional)
Heat pump
Typical SEER
14 SEER

Get Free Manual J Calculations for Santa Clara

Upload your Santa Clara blueprint and get a professional Manual J load calculation using official Zone 3C design temperatures. First report is FREE.

Santa Clara design temps
Zone 3C compliant
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