Dust buildup inside air ducts can circulate tiny particles throughout your home each time the HVAC system runs, irritating the respiratory system and eyes. This constant exposure to airborne dust can lead to sneezing, coughing, congestion, and itchy or watery eyes—especially for people with allergies or sensitivities. Over time, dirty ducts can worsen indoor air quality and make your living environment feel stuffy or uncomfortable. Regular duct cleaning helps reduce these irritants, promoting cleaner air and a healthier atmosphere for everyone in the household.