California HVAC Load Calculation
Professional HVAC load calculation requirements for California. Get accurate heating and cooling load calculations with state-specific design temperatures, building codes, and local climate considerations for Los Angeles, San Diego, San Jose and 3 more cities.
Quick Start California Load Calculator
Get started with your California HVAC load calculation using our professional tools designed for local climate conditions.
California Design Temperatures
Winter Design Temperature
Used for heating load calculations and equipment sizing across California
Summer Design Temperature
Used for cooling load calculations and equipment sizing across California
Climate Zone Information
California spans climate zones 2B and 3B and 3C and 4B and 4C and 5B, which means different regions may have varying design requirements. Always verify local design temperatures for your specific project location.
California Building Codes & Requirements
HVAC Requirements
- • HERS verification required
- • High-efficiency equipment mandatory
- • Demand response capability
Note: Most stringent energy codes in the US with frequent updates
Energy Code
Title 24 (most stringent in nation)
Common Building Types
- • Stucco/frame homes
- • Multi-family housing
- • Commercial high-rise
California HVAC Challenges
Seismic requirements
Wildfire concerns
Diverse climate zones
Strict efficiency standards