Categorically, there is a common misconception that if you change your filters and clean your grilles, your duct work is considered cleaned. THIS IS A FALLACY!!! There are a number of contaminates that could still be deep within the ducts itself. One of which being Mold! Click the link to read more. https://www.protekcorporation.com/wp-content/uploads/2019/06/What-you-cant-see-CAN-hurt-you-Article.pdf
