Knowing when to clean your air ducts is crucial for maintaining healthy indoor air quality. This comprehensive guide covers all the warning signs and indicators that your duct system needs professional attention. ## Visible Warning Signs The most obvious indicators that your ducts need cleaning are visible contaminants including dust blowing out of vents, visible dust accumulation around vent covers, and debris falling from ceiling or wall vents. ## Health-Related Indicators Your family's health can provide important clues about duct cleanliness. Look for increased allergy symptoms, more frequent asthma attacks, persistent coughing or sneezing, and difficulty breathing, especially at home. ## Performance Indicators Your HVAC system's performance can also indicate duct problems. Watch for higher energy bills without increased usage, uneven heating or cooling throughout the home, and reduced airflow from vents. ## Professional Assessment A professional inspection can identify issues you might miss. This includes camera inspection of duct interiors, assessment of vent conditions, and identification of hidden mold or damage. At Pure Flow, we recommend regular inspections and cleaning to maintain optimal indoor air quality.