BPI is celebrating its 20th anniversary and the growth is staggering — nearly 40,000 certifications and 200 training centers across all 50 states have established BPI as a major player in the building-performance field.

A recent letter to the American National Standards Institute (ANSI) is requesting that ANSI withdraw Building Performance Institute Inc.’s (BPI) accreditation as a Standards Development Organization for “repeated violations of BPI’s approved operating procedures and specific requirements of the ANSI essential requirements.”