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

Check your exact setup

Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.

Check a whole cart

AI 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-5300-2", candidate_id: "winix-115115".