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Honeywell HPA4100 replacement filter

Honeywell HPA4100 uses Filter Y1 True HEPA Replacement Filter (part HRFY1) as its primary replacement filter set.

Official Honeywell fit · checked

All compatible Honeywell HPA4100 filters

Every part number below is a primary replacement filter for this model.

Filter Part number Type Price
Filter Y1 True HEPA Replacement Filter HRFY1 Primary replacement filter set Check price

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

Before you order

How to buy the right Honeywell HPA4100 filter

  • Confirm the label on your purifier reads HPA4100.
  • Make sure the listing names part HRFY1, 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 Y1 True HEPA Replacement Filter HRFY1: The cited product page does not state a fixed replacement cadence for Filter Y1; the package contains 1 True HEPA filter element.

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

Frequently asked questions

What filter does the Honeywell HPA4100 use?

The Honeywell HPA4100 uses Filter Y1 True HEPA Replacement Filter (HRFY1). Each part number on this page is backed by an official Honeywell source.

How often should I replace the Honeywell HPA4100 filter?

The cited product page does not state a fixed replacement cadence for Filter Y1; the package contains 1 True HEPA filter element.

Where can I check replacement filters for the Honeywell HPA4100?

This page links directly to the cited official Honeywell 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 Y1 True HEPA Replacement Filter HRFY1

The official Honeywell Plugged In product specification states HRFY1 is designed specifically for Honeywell HPA4100 air purifiers.

Source checked
Replacement guidance
The cited product page does not state a fixed replacement cadence for Filter Y1; the package contains 1 True HEPA filter element.
Guidance checked

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