The California HERS Program was initially implemented to address building construction defects and improper equipment installations that negatively affect performance and cause energy to be wasted instead of conserved. HERS tested and verified measures cover newly constructed or altered space conditioning, ventilation, and hot water distribution systems and quality insulation installations.

Organizations that are interested in becoming a HERS Provider must submit an application in accordance with California Code of Regulations Title 20 Sections 1670-1675 (HERS Regulations) and Title 24, Parts 1 and 6 (Energy Code). To allow a HERS Provider to use an External Digital Data Source (EDDS) as an alternative data entry to its data registry, the HERS Provider must submit an EDDS application in accordance with Title 24, Part 6, Reference Joint Appendix JA7.8

Home Energy Rating System Program - HERS


Standards Compliance Branch
Toll-free in California: 800-772-3300
Outside California: 916-654-5106