A dirt ductwork system hampers indoor air quality and can lead to serious health issues if not cleaned on time. AC duct systems are comprised of a set of tubes that deliver fresh, clean and cool air throughout your home. While the expert recommended cleaning time of the AC ducts is on an as-needed basis, many homeowners are often unsure when should they opt a professional air duct cleaning. Here is a list of five signs that indicate that the AC ducts require an immediate cleaning.
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