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Winix air purifier

Winix P300 replacement filter

Winix P300 uses Filter A (part 115115) as its primary replacement filter set.

Official Winix fit · checked

Same filter, other models

Other Winix purifiers that use Filter A 115115

Own more than one purifier? These models share the same official part number.

All compatible Winix P300 filters

Primary filters are listed first. Specialty, optional, and alternative filters also fit, but you only need them if you want that feature.

Filter Part number Type Price
Filter A 115115 Primary replacement filter set Check price
Filter A +AllergenGuard 1712-0004-10 Specialty replacement filter set Check price
Filter A +SmokeGuard 1712-0004-11 Specialty replacement filter set Check price
Filter A +PetGuard 1712-0004-12 Specialty replacement filter set Check price

Price links open sponsored eBay searches for the exact part number.

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

How to buy the right Winix P300 filter

  • Confirm the label on your purifier reads P300.
  • Make sure the listing names part 115115, not just a similar-looking filter.
  • Check the pack size and pieces included. Genuine and third-party filters can differ.
  • Compare the total price with shipping, plus the seller's feedback and delivery estimate.

Care guidance

Replacement schedule

  • 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.

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

Frequently asked questions

What filter does the Winix P300 use?

The Winix P300 uses Filter A (115115) as its primary replacement filter parts. It also has these optional, specialty, or alternative compatible parts: Filter A +AllergenGuard (1712-0004-10), Filter A +SmokeGuard (1712-0004-11), Filter A +PetGuard (1712-0004-12). Those parts are not simultaneously required primary filters.

How often should I replace the Winix P300 filter?

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.

Where can I check replacement filters for the Winix P300?

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.

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 A +AllergenGuard 1712-0004-10

Official Winix America product page identifies Filter A +AllergenGuard, SKU 1712-0004-10, as compatible with models 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909 and P300.

Source checked
Replacement guidance
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.
Guidance checked

Filter A +SmokeGuard 1712-0004-11

Official Winix America product page identifies Filter A +SmokeGuard, SKU 1712-0004-11, as compatible with models 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909 and P300.

Source checked
Replacement guidance
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.
Guidance checked

Filter A +PetGuard 1712-0004-12

Official Winix America product page identifies Filter A +PetGuard, SKU 1712-0004-12, as compatible with models 5300, 5300-2, 5500, 6300, 6300-2, 9800, AM90, C535, C909 and P300.

Source checked
Replacement guidance
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.
Guidance checked

Filter A 115115

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.

Source checked
Replacement guidance
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.
Guidance checked

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