Costco Air Purifier Filters

Costco sells replacement filters for some of its purifiers, most notably the Winix filter 2-pack for the C535 and C909. The rule is the same either way: match the part number on your unit.

What to check

  • Pack contents: HEPA and carbon may be combined or separate.
  • Bundles: a Costco purifier bundle may already include your first spare.
  • Filter type: Levoit filters come in original, toxin absorber and pet allergy versions.
  • Reset the indicator after installing.

See Winix Replacement Filters and Levoit Replacement Filters for part numbers.

FAQs

Does Costco sell Winix filters?

Yes. Costco has sold a Winix replacement filter 2-pack for the C535 and C909 purifiers. Availability varies. Always match the part number printed on your unit.

Where can I buy filters for a Costco air purifier?

Many Costco models share filters with mainstream models. Avoid ordering by product name alone, since similar names can use different filters.

Are Costco filter 2-packs worth it?

Often, if the filters match your purifier and you will use both within a year or two. The per-filter price is usually lower than buying singles. Store the spare sealed in a dry place.
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