Filtration layering involves using a primary dust filter followed by secondary active carbon or HEPA-style inserts to scrub the air. Every UFC Multi-Zone indoor head is designed with multiple slots to hold these various filtration stages. For homeowners with allergies, the Bravo Milano 12,000 BTU Universal Floor/Ceiling can significantly improve the air quality of a bedroom. You can find specialized replacement filters in our Other Accessories section to target specific pollutants like smoke or pollen. Keeping these layers clean is simple and should be done every few months for a Single-Zone system. This multi-tiered approach ensures that the air you breathe is as cool as it is clean. It’s an essential feature for any modern, healthy home environment.