There is a continuous cycle of airflow within your home. Overtime, the walls of your air ducts become filled with particles of dust, allergens, and other debris. If not properly maintained heating & cooling components become contaminated with particles of dust, pollen or other debris. Some of these contaminants may cause allergic reactions or other symptoms in people if they are exposed to them. Regular maintenance, cleaning, and servicing will keep your system operating at its peak energy efficiency and safe operation.