Efficiency First

Standards and Technical Resources

ASHRAE Standards and Guidelines

Preview some standards documentation online, or purchase complete documents through ASHRAE.

BPI Standards

Downloadable reference sheets for BPI technical standards (also see Approved BPI Technical Standards for building performance and professional accreditation standards).

BPI 101: An Overview of the BPI Credentialing Process

Slides from a presentation prepared by the Building Performance Institute


Guide to household appliances and home improvement products that qualify under the federal ENERGY STAR program

RESNET Standards

Index of standards for home energy rating, audits and procedures

Measured Home Performance: A Guide to Best Practices for Home Energy Retrofits in California

Sponsored by the Energy Commission, this is a guide for companies interested in home performance in California. Download a PDF of the Best Practices Guide by clicking here.