Fine Particulate Matter in the air we breathe. Air pollution ranks behind only high blood pressure, diet and smoking as the fourth leading cause of death worldwide. Our MERV15 washable furnace filters remove >90% of PM2.5.
The most harmful component of air pollution is something called PM2.5. PM2.5 is fine particulate matter that is small enough to pass through the lungs into the bloodstream where it causes many negative health effects. PM2.5 in the air you breathe may not be from nearby as it has the ability to stay airborne for days and weeks so can come from almost anywhere.