By using a four-step process to filter the air of particles, odors and gases, the Friedrich C-90B provides fresh, clean air and reduces breathing problems for those with allergies and respiratory sensitivity.
1. The pre-filter catches the larger particles (dust, pet dander, and pet hair) as room air is drawn through the unit.
2. In the ionizing section of the electronic cell, billions of microscopic particles become electrically charged as they pass through a powerful electric field.
3. Collector plates immediately attract and hold these "charged" particles.
4. Finally, an activated carbon filter removes common odors and gases (such as VOCs) as the cleaned air is circulated back into the room.
Ozone-safe and Energy Star qualified. Cleans the air in an area of up to 480 square feet.











