Most people think only about the quality of air outdoors, when in reality, indoor air quality is often far worse than what we find outside. From air pollution, to wildfires, to airborne illnesses, indoor air quality can have a direct impact on health. There are several reasons indoor air quality is not only poor but on the decline in many areas. With many people looking for homes that are as energy efficient as possible, doors, windows and other construction materials have been developed to help seal homes and ensure the loss of conditioned air is at a minimum. While keeping homes tightly sealed against the outside environment can definitely help with energy efficiency, it can also reduce airflow and lead to a buildup of harmful substances in the air you breathe.