Answer: Because they get dirty! There are several other factors that can increase the need for regular system cleaning: pets, occupants with allergies or asthma, cigarette or cigar smoke, and home renovation or remodeling projects. Allergy and asthma sufferers, as well as young children and the elderly, tend to be more susceptible to the types of poor indoor air quality that air duct cleaning can help address. We generate a great deal of contaminants and air pollutants, such as dander, dust, and chemicals. These contaminants are pulled into the HVAC system and re-circulated 5 to 7 times per day, on average. Over time, this re-circulation causes a build-up of contaminants in the ductwork, which could lead to bigger health issues that could cause serious problems for people with respiratory health conditions, autoimmune disorders, or some environmental allergies.

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