Numerous factors can negatively impact your home or business’ indoor air quality. In some cases, a dirty filter is the culprit. In others, you need to clean the vents and ductwork in your building. No matter the cause, there is a solution. While no one will die because of poor ventilation in a building, those with allergies or asthma might experience more frequent attacks. If you own a commercial property, you might be able to cut down on sick days by giving your HVAC system a serious once over and remove the dust and dander causing all the problems.