When we talk about indoor air quality we are referring to the quality of the air that we breathe while inside buildings and structures. This air can affect the health and comfort of tenants and occupants. Pollen, dust mites, bacteria, viruses, mold, pet dander and potential gas leaks in your HVAC system can contribute to poor indoor air quality. Moisture, humidity and chemical pollutants can also be contributing factors. Poor indoor air quality from any of these types of contaminants and situations can cause illness within the building occupants. The only way to ensure you do not become a victim of poor indoor air quality is to have total control over the air that is available within the home or building. This can be quite effectively done with an HVAC system. In order to ensure that indoor air quality is consistently good, you need to ensure your HVAC system is regularly checked, serviced and maintained.