[ONLY for UN103] To replace the filter is to ensure your air purifier running at its best condition and capacity.
[3 in 1 combination filter set] Pre /Charcoal & HEPA Filter. Filters particles as small as 0.3 microns and larger and filters air pollution of PM 2.5. On average, the filter should be replaced every 3-6 months. Note: please remove the plastic bag of the composite filter before running the air purifier.
[HIGH EFFICIENCY ELIMINATOR] Dust, Allergen, Odor Remover, Pet Dander, Smoke Eliminator. Helps get rid of common allergy triggers including, pollen, pet dander, as well as other small particles and pollutants.