Winix ZERO replacement filter set. Includes 1 Hepa filter, 1 activated carbon filter with carbon granules. Covers needs for 1-2 years (depends on the particle-gaseous pollutant load of the space).

The filters need to be replaced depending on the operating hours of the device and the load of indoor air with gaseous pollutants and particles. An average lifespan is one year for both filters. The above calculations are made assuming the device operates for 12 hours each day and the indoor space is moderately loaded.