How to select an air duct cleaning company? There are health benefits for all residents from regularly cleaning the Heating, Ventilation, Air Conditioning (HVAC) System. Heating, ventilation, and air conditioning (HVAC) systems collect mold, fungi, bacteria and a variety of contaminants that reduce the quality of the air residents and visitors breathe. A dirty air duct contributes to poor indoor air quality and affects the health of people in the residence.
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