Air ducts are integral parts of a ventilation system. They are responsible for the supply of clean air and the intake of waste air. That is why the sanitary and hygienic condition of the air ducts by the ventilation system must also be monitored periodically.
A layer of dust and debris reduces the performance of the ventilation system: Buildups reduce the cross-sectional area of the duct and also resist the moving air. Mud deposits are a favorable area for the development of pathogenic bacteria that can harm human health.