Indoor air pollution is a growing concern for home and business owners. While dirty air ducts don’t necessarily pose serious health risks to your visitors, employees or staff, if not properly installed, maintained and operated, your building’s heating and cooling system may become contaminated with particles of dust, pollen or other debris. Especially after construction, mold, mildew, dust mites, pollen and animal dander are just some of the contaminants that may be circulating through your central air system. Major benefits of duct cleaning include: 1. Increased energy efficiency According to the U.S. Department of Energy, 20 to 40 percent of the energy used to heat or cool a building is wasted. Contaminants in the HVAC system, such as dust and …