Author: steve7876

Introduction The air we breathe within the confines of our homes and offices is often taken for granted. We assume that because we cannot see the microscopic particles swirling around us, the air must be clean. However, the history of indoor environments tells a much more complex story. For decades, the infrastructure responsible for distributing heated or cooled air remained a hidden, neglected part of the building. The ducts were simply hollow metal veins, prone to accumulating dust, debris, and biological growth. As our understanding of respiratory health and energy efficiency evolved, so too did the necessity for maintaining these…