For more information about the transition from Version 2 to Version 3, including the transitional Version 2.5 guidelines, see the Transition Timeline for California.
There is only one path to qualify a home to earn the ENERGY STAR in California, the Performance Path. The Performance Path is based on a customized package of upgrades. See the Version 2 Program Requirements for California. (21KB)
The Version 2 Requirements for California require completion of the Thermal Bypass Checklist. Homes must also pass California’s Quality Insulation Installation protocol.
EPA has developed a Thermal Bypass Inspection Checklist Guide (2.52MB) to explain the rationale behind each item.
EPA periodically makes policy changes and clarifications, typically in response to a unique situation within a particular climate zone. See Recent Policy Changes and Clarifications.