LEVOIT Vital100 Air Purifier Replacement Filter - HEPA & Activated Carbon Combo for Allergens, Dust, Smoke - Vital 100-RF (1 Pack, White) - Perfect for Bedrooms, Living Rooms & Offices

These filters do the job but are expensive to replace. The system will shut itself off if the filter gets too dirty. It does pull a lot out of the air and you can vacuum the front if dust accumulates on the filter. You can do that to extend the filter life and before it shuts down on its own. Overall, it does a good job of filtering the air.