For the best performance and longest lifespan, use genuine Levoit replacement filters. Use the in-app feature to monitor your filter life. Search B08L971Z4L or “Core 200S-RF”
IMPROVED FILTRATION: While the ultra-fine Nylon Pre-Filter and High-Efficiency Activated Carbon Filter capture large particles and absorb odors and fumes, the efficient filter of the 3-in-1 filter removes at least 99.97% of dust, pollen, and any airborne particles with a size of 0.3 microns (µm)