Your air ducts are the hidden pathways that carry warm or cool air throughout your home—but over time, they can collect dust, allergens, and debris that impact both your indoor air quality and HVAC efficiency. Here are seven warning signs that it may be time to schedule a professional duct cleaning:

1. Visible Dust Blowing from Vents
   If you see dust puffing out of your vents when your HVAC system kicks on, that’s a clear sign your ducts need attention.
2. Unexplained Allergy Flare-Ups
   More sneezing, coughing, or itchy eyes at home? Dirty ducts may be circulating allergens like pollen, dander, and mold spores.
3. Musty or Moldy Odors
   Persistent, unpleasant smells coming from your vents could indicate mold growth inside your ductwork.
4. Dust Build-Up Around Vents and Registers
   Excessive dust collecting around vent covers can be a visible clue that your ducts are clogged.
5. Poor Airflow from Vents
   Blocked or dirty ducts can restrict airflow, making rooms feel unevenly heated or cooled.
6. Rodent or Insect Infestation Evidence
   Droppings or nests in or around vents may mean pests have taken up residence inside your ducts.
7. It’s Been More Than 3-5 Years
   As a general rule, ducts should be inspected and cleaned every 3–5 years—more often if you have pets, allergies, or recent renovations.

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