Dirty air ducts can cause allergies, stale odors in your home, extra dust, and even sickness. Over time, pollutants, mold and bacteria from dirt, pollen, tobacco smoke, pet hair, and dust mites collect in the ductwork of your home's heating and cooling system. Every time your furnace or air conditioner runs, these particles whisk through your vents and spew into the air that your family breathes. On average, air duct cleaning should be done every three to five years.
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