Many people believe an HVAC system is a furnace and air conditioner. However, there is much more that goes into your HVAC system than just the furnace and air conditioner. Indoor air quality is best achieved through air cleaners/filters, humidifiers, dehumidifiers, and air exchangers. According to the American Lung Association, 85 percent of American homeowners are not aware that pollution may be worse inside their homes than outdoors. The steps you take to improve your indoor air quality can lead to utility savings as well as long-term health benefits for you and your loved ones.