Suggest replacing the filter after 6 - 8 months use to optimize the performance.
4 Pcs/2 Sets HEPA/Carbon Replacement Filter for NuWave OxyPure 47401 47402 Portable Air Purifier for Large Room up to 1361 sq.ft with Dual Air Inlet
2 Sets Air Purifier Filter Filtering Accessory Kit For FLT5000 AC5000
Nuage Barrier Balm 50g & 2 Sets Nuage Hayfever Wipes 30-Pack
1/2 Sets Filter Kit for LEVOIT LV-PUR131 LV-H131 LV-131S LV-RH131S Air Purifier
Lhari 2-Pack True HEPA GL-FS32 Filter, Compatible with MOOKA/KOIOS GL-FS32 and AZEUS GL-FS32 Air Purifier, 3-in-1 H13 True HEPA Removes Dust and VOCs, 2-Pack
Medify Air MA-15R-2 Air Purifier, Hepa, White, 2, 2