Title 24: California Energy Standards

Overview

Title 24 is California's Building Energy Efficiency Standards, updated every three years to ensure new buildings and renovations meet minimum energy efficiency requirements. These standards reduce energy consumption, improve indoor comfort, and help California achieve its climate goals.

The standards cover various building components including HVAC systems, insulation, windows, and roofing. Cool roof requirements are a key component, especially in warmer climate zones where they significantly reduce cooling loads.

Component Guides

Key Requirements

• Cool roofs with minimum solar reflectance and thermal emittance
• Climate zone-specific prescriptive requirements
• CRRC-rated products for compliance verification
• Performance and prescriptive compliance paths
• HERS verification for certain measures

Resources

• California Energy Commission
• Cool Roof Rating Council
• Energy Code Ace