Since 1921, AAF has been bringing clean air to indoor environments all across the globe. Our leadership is built on more than a century of experience in creating advanced filtration products, services and solutions with the integrity, trust and reliability you’ve come to expect. Today, you’ll find AAF manufacturing facilities in 22 countries across four continents, with sales and technical support offices in over 100 countries. At multiple research and development locations, we continuously research, test and refine ways to remove harmful contaminants from the air that contribute to improving the quality of life for people, processes and the environment.