by Mark Hansberger on July 6, 2021July 1, 2021 Do You Know How to Use an Air Quality Rating Scale? Clean, breathable air is one of the most important factors when it comes to your health. The air you breathe can contain viruses, bacteria, and a host of other contaminants, which can cause asthma attacks, […]Read More Filed Under: IAQ – Indoor Air Quality Tagged With: air purifier– AQI– clean air