Calling us for home air duct cleaning implies that you want a healthy environment. Accumulation of dust in air ducts is brought about by adherence of the dirt to duct surfaces. The particles may not enter the living space, but that does not disregard the fact that they will be present in the air inside. Also, there is pollution from indoor and outdoor activities such as cooking and smoking which also contributes to dirtying the ventilation. That is why we recommend cleaning of air passages to eliminate even the smallest risk of health complications.