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Primary replacement filter set

Winix Filter A 115115 replacement filter

Filter A (part 115115) fits Winix 5300, Winix 5300-2, Winix 5500 and 7 more models, according to the official Winix product page.

Official Winix fit · checked

Winix models that use Filter A 115115

This filter is listed for 10 models. Open a model to see its complete list of primary, optional, and specialty filters.

Official package contents

What's in the box

From the linked official Winix product page. Marketplace packs can differ, so compare before you buy.

Filter A 115115

Before you order

What to check in a 115115 listing

  • The listing names part 115115. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: Winix 5300, Winix 5300-2, Winix 5500 and 7 more models.
  • 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: replace the True HEPA filter every 12 months and the included activated carbon filters every 3 months.

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

Free calendar reminder

Never forget a filter change

Enter the date you installed the filter and we'll make a repeating calendar reminder based on the official replacement schedule.

Filter A — True HEPA Filter 115115

The calendar reminder starts 12 months after this date and repeats on that schedule.

Filter A — Activated Carbon Filter 115115

The calendar reminder starts 3 months after this date and repeats on that schedule.

Your date is processed only in this browser. The .ics calendar file is generated locally on your device and is not uploaded to this site.

Compare compatible options

These share at least one compatible model but may do a different job, such as a carbon pre-filter or a specialty version. Check each part page before buying.

Optional pet pre-filter pack

Filter U

1712-0094-00

Frequently asked questions

How often should I replace the Winix Filter A (115115)?

Winix sells this as a one-year replacement filter set: replace the True HEPA filter every 12 months and the included activated carbon filters every 3 months.

Which Winix models use the Filter A 115115?

According to the official Winix product page, Filter A (115115) fits Winix 5300, Winix 5300-2, Winix 5500 and 7 more models. Verify the model label on your unit before ordering.

Do aftermarket 115115 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 115115, 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 A, SKU 115115, as compatible with models 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909 and P300.

Winix America Filter A - 115115

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