When thinking about air quality, you may be more focused on what’s in the air outside such as mold and pollen levels. In fact, indoor air quality (IAQ) is even more important. After all, most Americans spend 90% of their time indoors, and that percentage is even higher for those suffering from respiratory conditions or allergies. At the same time, IAQ has become more of a concern due to factors such as new building construction utilizing airtight features to increase energy conservation. That’s why if you’re going to invest in an air purifier, whole-house air purifiers are your best bet.