Will the Winix Filter A (115115) True HEPA + carbon replacement filter work with the Winix AM90 4-Stage True HEPA Air Purifier with WiFi?
Yes. Both use Winix Filter A (115115).
Both records are reviewed against the manufacturers' sources; sources last checked 2026-10-14. Informational only: confirm with the manufacturer before buying.
Why
- ✓ Both use Winix Filter A (115115).
Good to know
- The Winix 5500-2 (the "-2" model) uses Filter H (116130), not Filter A, even though the older 5500 uses Filter A.
- Winix: change the True HEPA filter about every 12 months and the carbon pre-filter about every 3 months.
Sources
- Winix AM90 4-Stage True HEPA Air Purifier with WiFi: specs from Winix America - AM90 product page, checked against the source 2026-10-13.
- Winix Filter A (115115) True HEPA + carbon replacement filter: specs from Winix America - Filter A 115115, checked against the source 2026-10-13.
- Winix Filter A (115115): True HEPA + carbon filter set shared by many Winix purifiers: 6300, P300, 5300, 5500, 5300-2, 6300-2, AM90, C909, 9800 and C535. (Winix America - Filter A 115115).
Check your exact setup
Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.
Check a whole cartAI assistants and developers: the same answer, with a signed receipt, from check_compatibility at https://tetheredtrust.com/mcp or POST https://tetheredtrust.com/v1/check with existing_id: "winix-am90", candidate_id: "winix-115115".