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Primary replacement filter set

Winix Filter E 113250 replacement filter

Filter E (part 113250) fits Winix B451 and Winix P450, according to the official Winix product page.

Official Winix fit · checked

Winix models that use Filter E 113250

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 113250 listing

  • The listing names part 113250. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: Winix B451 and Winix P450.
  • 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.

Frequently asked questions

How often should I replace the Winix Filter E (113250)?

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 E 113250?

According to the official Winix product page, Filter E (113250) fits Winix B451 and Winix P450. Verify the model label on your unit before ordering.

Do aftermarket 113250 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 113250, 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 E, SKU 113250, as compatible with models B451 and P450.

Winix America Filter E - 113250

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