Without a proper filter, your HVAC system—that's your heating, ventilation, and air conditioning system—is more likely to get clogged, which can lead to poor air quality, higher energy bills ...

What Is a Cabin Air Filter and What Does It Do? Cabin air filters clean the air entering the interior of dust, smog, odors, allergens, and other contaminants. Assuming everything is reasonably ...

who oversees CR’s air filter testing. But not every HVAC system can accommodate a thicker filter—the most common size is 1 inch thick—though you can retrofit the ductwork of some systems to ...