Winix Filter A

The set is designed for a full year of maintenance. You should replace the True HEPA filter every 12 months, while the four included Activated Carbon filters should be swapped out every 3 months to maintain optimal airflow and odor control.

This filter is compatible with several popular Winix models, including the 6300, P300, 5300, 5500, 5300-2, 6300-2, AM90, C909, 9800, and C535. Always check your specific unit's manual or the label on your current filter to confirm compatibility before purchasing.

The +PetGuard designation indicates that this filter set is specifically optimized to handle the unique challenges of pet ownership. It is engineered to capture pet dander and hair more effectively while utilizing the activated carbon layers to neutralize the specific odors associated with household pets.

It captures both. The True HEPA filter is rated to trap 99.99% of airborne allergens, including microscopic pet dander as small as 0.003 microns, while the pre-filter and carbon layers work to catch larger hair and fur before it clogs the main filter.

Carbon filters are your first line of defense against odors and VOCs, but they saturate faster than HEPA filters. By including four, Winix allows you to refresh your unit's odor-fighting capability every three months, ensuring your air stays fresh throughout the entire year-long lifespan of the main HEPA filter.