Air ducts play a key role in distributing clean air, yet they often collect dust, pet dander, and hidden contaminants. The material explores how these pollutants accumulate, how moisture leads to mold growth, and how circulation spreads them through the home. It also explains the connection between dirty ducts and allergies, asthma, and inconsistent airflow. Professional cleaning is emphasized as a way to restore system efficiency, lower energy costs, and support a healthier living space for every family member. For more details, visit: https://johnsonsinsulation.green/air-duct-installation-services/