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Winix NK105 replacement filter

Winix NK105 uses Filter N (part 112180) as its primary replacement filter set.

Quick fit check

Match the exact filter before buying

The official manufacturer source identifies these primary parts for the Winix NK105.

Primary replacement filter set Filter N 112180
View part details Official Winix source

All compatible part numbers

Primary, optional, specialty, and alternative filters are listed separately so you can match the role as well as the part number.

Filter Part number Role Source
Filter N 112180 Primary replacement filter set Winix America Filter N - 112180

Official compatibility record

Manufacturer evidence

Each compatibility and care statement below is reproduced from the cited official manufacturer record. Check the source again before ordering.

Filter N 112180

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

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

Buying checklist

How to choose the right replacement

Match the Winix NK105 model label and the exact part number above. Marketplace listings can be OEM or aftermarket, and a similar-looking filter may have different dimensions.

Compare the listing title, product photos, included filter pieces, seller details, delivery estimate, and total price before you order.

Care guidance

Replacement schedule

  • Filter N 112180: Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.

Usage and air quality can affect service life. Follow the cited manufacturer guidance for each part.

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Frequently asked questions

What filter does the Winix NK105 use?

The Winix NK105 uses Filter N (112180). Each part number on this page is backed by an official Winix source.

How often should I replace the Winix NK105 filter?

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

Where can I check replacement filters for the Winix NK105?

This page links directly to the cited official Winix product page and shows sponsored individual eBay listings when a fresh exact-part snapshot is available, with an exact-part eBay search fallback. This site does not sell filters; match the part number and review the current source or seller listing before buying.