Indoor Air Quality is a concern for all of us – at work or home. Contaminants such as dust, dander, mold, vermin (and their droppings), and bugs can collect in ductwork. These contaminants can circulate throughout a home or office every time the system runs. Dirty ducts may contribute to health issues like respiratory conditions, autoimmune disorders, and environmental allergies. Duct Doctor was established in order to improve air quality, help HVAC systems run better, and preserve the function of sensitive equipment. Members of NADCA Duct... read full review »