#BPI develops standards & certifications for improving home comfort and energy efficiency, and for creating and maintaining safe and healthy home environments. BPI is the nation's premier developer of technical standards and professional credentials for residential energy efficiency retrofit work. BPI is the nation's premier building performance credentialing, quality assurance and standards setting organization. BPI develops technical standards using an open, transparent, consensus-based process built on sound building science. BPI is approved by the American National Standards Institute, Inc. (ANSI) as an accredited developer of American National Standards and as a certifying body for personnel credentials.