Ferloy Air Purifier Replacement Filters (4-Pack)

Upgrade your Ferloy 25 Series air purifier with these premium 4-pack replacement filters, designed for models W1, S1, and B1. Each 3-in-1 filter combines a True HEPA H13 layer and activated carbon to capture 99.97% of particles as small as 0.3 microns—including dust, smoke, pet dander, and allergens—ensuring cleaner, fresher air in your home.

These high-quality, cost-effective filters provide an ideal solution for maintaining optimal air purification performance. Replace them every 3 months for best results, or sooner if you notice reduced airflow or efficiency. Ferloy stands behind its products with a customer-first guarantee—if you’re not fully satisfied, our team is ready to assist with replacements or refunds. Breathe easier with Ferloy’s trusted air filtration.