Poor indoor air quality can lead to discomfort, health issues, and reduced HVAC efficiency. Dust, pollen, and pet dander can exacerbate allergies and respiratory problems, while moisture and damaged ductwork may contribute to mold growth and structural issues. Stale odors and uneven airflow can also affect the comfort of indoor spaces. Addressing these issues is crucial for maintaining a healthy and comfortable living or working environment, especially in areas like Raleigh with specific climate challenges.