Larry Zarker is the CEO of the Building Performance Institute, the professional standards setting and credentialing organization for both the weatherization and home performance contracting industries. He oversees BPI's national network of over 12,000 certified professionals and BPI GoldStar contracting companies. He was instrumental in moving BPI toward the new Healthy Home Evaluator certification and the new Healthy Housing Principles certificate of knowledge. He has delivered talks on the various ways that conditions in homes can negatively impact the health of its occupants. Prior to BPI, he worked for nearly twenty years with the NAHB Research Center and was the Vice President of Marketing for over a decade, serving both the new home and remodeling sectors with innovative product development and research.