The United Nation's World Health Organization has estimated that up to 30 percent of all office buildings worldwide suffer from sick building syndrome, affecting as many as 64 million workers in the United States. This is just one of many indoor air quality (IAQ) statistics that is presented to consumers on a regular basis.

But what do individuals really know about how to improve their indoor air quality (IAQ)? And more specifically, what do they really know about the air filtration system in their homes and businesses? To select the right filter, contractors need to tell their customers the whole story.