California’s Title 24 has shaped HVAC efficiency standards for more than a decade, and its influence continues to spread. Whether you are working in California or in a state adopting similar codes, understanding Title 24’s impact on economizers and ventilation control is essential.
This overview breaks down the key concepts behind Title 24 as they relate to economizers—without requiring you to navigate hundreds of pages of compliance documents.
What Is Title 24?
Title 24 is part of the California Code of Regulations and sets statewide energy efficiency and building performance requirements. It covers nearly every aspect of a building’s construction—including HVAC systems, ventilation strategies, and economizer performance expectations.
Although written for California, Title 24 often sets precedents that influence codes across the U.S.
Why Title 24 Matters in HVAC
Economizers play a major role in ventilation and outdoor air management. Title 24 directly addresses economizer performance, reliability, and energy impact. Its goal is simple:
Improve energy efficiency
Ensure proper ventilation
Reduce failures of economizer systems in the field
Historically, many economizers found in the field were non-functional, disconnected, or improperly configured, leading to wasted energy and poor indoor air quality. Title 24 was created to fix that.
Two Key Sections That Impact Economizers</