Would you believe that according to the Environmental Protection Agency the air you breathe everyday inside of you home, offices might actually be dirtier than the air outside? It’s true, and the duct-work that delivers your heating and air-conditioning can be the main culprit. From dust and air-borne, debris to mold, mildew and other odors, the result can be allergies, asthma, headaches, sore throats, and nasal congestion for the family members.