ACI, a non-profit organization, celebrated 20 years of training building and housing professionals in 2006. Founded as the Affordable Comfort Conference in 1986, our roots are in defining the best way to make homes energy efficient, without harming the residents and the building. Through our national and regional conferences, and other training programs, ACI brings together the thinkers and doers who are committed to finding out how buildings really work. They solve technical problems, learn about new techniques, tools and materials, and build their businesses.