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California HVAC Energy Code Resources
California’s 2025 Energy Code includes updated HVAC efficiency standards, installation requirements, heat pump guidance, duct testing information, and compliance regulations that impact contractors, technicians, and building professionals statewide.
To help industry professionals stay informed, the California Energy Commission provides an official HVAC FAQ resource covering common compliance and installation questions related to Title 24 requirements.
Topics Covered
- HVAC system alterations
- Heat pump requirements
- Duct sealing and testing
- Ventilation standards
- Energy efficiency requirements
Industry & Policy Updates Temporary
IHACI also shares important state and federal energy policy developments that may impact the HVAC industry.
U.S. Department of Energy Request for Information (RFI)The U.S. Department of Energy recently published a Request for Information seeking public feedback on improving the methodology used to assess the affordability and cost-effectiveness of building energy codes.
This initiative focuses on how future building energy standards may impact:
Construction costs
Energy efficiency
Building affordability
Long-term energy performance
Payments
