An air scrubber is a specialized IAQ device that uses NASA-inspired technology to send out "scrubbing" molecules that actively seek out and neutralize pathogens on surfaces and in the air. Unlike standard filters that wait for air to pass through them, an air scrubber is an active system that treats the entire living space. It is highly effective at killing viruses, bacteria, and mold spores, as well as reducing smoke and pet odors. These units are typically installed directly into the ductwork and operate whenever the HVAC fan is running. For families with severe allergies or health concerns, an air scrubber is considered the "gold standard" of indoor air purification.