What Is Title 24?
Title 24 is California's building energy code. It sets minimum efficiency standards for equipment and installation practices to reduce energy consumption.
When Title 24 Applies
New construction, additions, and major alterations must comply. HVAC replacements trigger compliance requirements. Even simple changeouts require documentation.
Equipment Efficiency Requirements
Minimum SEER, AFUE, and HSPF ratings are specified. Heat pumps and variable-speed equipment may be required in some climate zones.
Duct Testing Requirements
New duct systems must be tested for leakage and meet maximum leakage rates. This ensures installed ducts actually deliver conditioned air.
Verification and Documentation
HERS raters verify Title 24 compliance. CF-1R and CF-2R forms document compliance. Your contractor should provide these.
Impact on Costs
Code compliance adds $500-$1,500 to project costs for testing and documentation. This ensures quality installation and long-term savings.