Mold In and Around The Home | Best Pick Reports

According to the EPA, "You should consider having the air ducts in your home cleaned if there is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system." This kind of microbial growth happens when mold spores combine with the dust, dirt, and moisture in the system; multiply; and then are distributed throughout the home or office via the air ducts. In some cases, molds are potentially toxic substances (mycotoxins).