Fits checked Oct 1, 2026 · How we check
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Winix · air purifier

Winix NK105 replacement filter

Use part 112180. Replace all-in-one True HEPA canister filter every 12 months.

The filter that fits

Maker lists this model

Winix Filter N

Winix Replacement Filter N

Part number
112180
How many
1 per unit
How often
Replace all-in-one True HEPA canister filter every 12 months
Buy Filter N on AmazonManufacturer page

Opens an Amazon search for Winix Filter N 112180. Check the listing says 112180.

See the sources

Does your exact model share this filter?

Winix labels several versions of the NK105. Check the label on your unit.

  • NK105 takes 112180
  • NK100 same filter

Look-alike models that take a different filter

Winix Europe's Filter N is for the NK300/NK305 and Tower Q models; check the US part number 112180.

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits winixamerica.com Maker's own page checked Oct 1, 2026
    Filter N – 112180: Compatible with Winix air cleaner models NK100, NK105, and QS
  • How often winixamerica.com Maker's own page checked Oct 1, 2026
    change the all-in-one True HEPA Canister Filter once every 12 months
  • What's in it winixamerica.com Maker's own page checked Oct 1, 2026
    True-HEPA filtration ... Coated Deodorization (CD) Carbon Filter reduces odors