What’s Inside Your Ductwork? According to the EPA, levels of air pollution inside the homes can be two to five times higher than outdoor levels. Household dust can contain mites, mold, mildew, pollen, and animal dander- all of which are cycled through the central air system, which completely circulates the air in your home three to five times a day. The best way to remove these contaminants inside your ductwork is to have them professionally cleaned. We use an advanced cleaning method to scrub your duct system clean. Plus, we can sanitize your ductwork with an EPA-registered anti-microbial chemical, leaving your home fresh and clean!