Air Filter LookupAir purifier filter finder

Primary replacement filter set

Winix Filter N 112180 replacement filter

Filter N (part 112180) fits Winix NK100 and Winix NK105, according to the official Winix product page.

Official Winix fit · checked

Winix models that use Filter N 112180

This filter is listed for 2 models. Open a model to see its complete list of primary, optional, and specialty filters.

Before you order

What to check in a 112180 listing

  • The listing names part 112180. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: Winix NK100 and Winix NK105.
  • The pack size and pieces included match what you need. Genuine and third-party filters can differ.
  • The total price with shipping, seller feedback, and delivery estimate work for you.

Care guidance

Replacement schedule

Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.

Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.

Frequently asked questions

How often should I replace the Winix Filter N (112180)?

Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.

Which Winix models use the Filter N 112180?

According to the official Winix product page, Filter N (112180) fits Winix NK100 and Winix NK105. Verify the model label on your unit before ordering.

Do aftermarket 112180 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 112180, review the listing details, and verify the model label on your unit before buying.

Official compatibility record

Manufacturer source

Official Winix America product page identifies Filter N, SKU 112180, as compatible with models NK100 and NK105.

Winix America Filter N - 112180

Source compatibility checked 2026-08-29. Recheck the listing and your purifier label before ordering.