L As the National Air Duct Cleaners Association (NADCA) maintains, “because they get dirty!”.
In addition to normal accumulations of dust and dirt found in all homes through regular use, several other factors can increase the need for air duct cleaning:
• Occupants with allergies or asthma
• Cigarette or cigar smoke
• Water contamination or damage
• Home renovation or remodeling projects
Some occupants are more sensitive to these contaminants than others. 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 to address.