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Primary replacement filter set

Winix Filter E – 113250 replacement filter

Filter E (113250) fits Winix B451 and Winix P450 according to the cited Winix source.

Official manufacturer Filter E 113250 Check official Winix availability Non-affiliate link to the cited official product page.
Marketplace search Check eBay prices for 113250 Sponsored eBay links. We may earn a commission from qualifying purchases.

Quick fit check

Filter E fit and replacement facts

Part number113250
Compatible models2
Filter rolePrimary replacement filter set

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.

Compatible Winix models

Follow a model link for its complete primary, optional, specialty, and alternative filter list.

Model Filter Part number Role Source Marketplace
Winix B451 Filter E 113250 Primary replacement filter set Winix America Filter E - 113250 Check prices
Winix P450 Filter E 113250 Primary replacement filter set Winix America Filter E - 113250 Check prices

Buying checklist

What to check in a filter listing

Confirm that the listing names part 113250 and one of the compatible models: Winix B451 and Winix P450. Similar-looking filters are not proof of fit.

Decide whether you want an OEM or aftermarket filter, then compare the included pieces, product photos, seller details, delivery estimate, and total price.

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.

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 2026-05-24. Recheck the listing and your purifier label before ordering.