Air Filter LookupAir purifier filter finder

Honeywell air purifier

Honeywell HPA125 replacement filter

Honeywell HPA125 uses Filter O 3-in-1 HEPA Replacement Filter (part HRFO1) as its primary replacement filter set.

Official Honeywell fit · checked

Same filter, other models

Other Honeywell purifiers that use Filter O 3-in-1 HEPA Replacement Filter HRFO1

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

All compatible Honeywell HPA125 filters

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

Filter Part number Type Price
Filter O 3-in-1 HEPA Replacement Filter HRFO1 Primary 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 Honeywell product page. Marketplace packs can differ, so compare before you buy.

Filter O 3-in-1 HEPA Replacement Filter HRFO1

Before you order

How to buy the right Honeywell HPA125 filter

  • Confirm the label on your purifier reads HPA125.
  • Make sure the listing names part HRFO1, 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 O 3-in-1 HEPA Replacement Filter HRFO1: Honeywell recommends replacing 3-in-1 Filter O HEPA filters every 9 to 12 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 O 3-in-1 HEPA Replacement Filter filter set HRFO1

The calendar reminder starts 12 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 Honeywell HPA125 use?

The Honeywell HPA125 uses Filter O 3-in-1 HEPA Replacement Filter (HRFO1). Each part number on this page is backed by an official Honeywell source.

How often should I replace the Honeywell HPA125 filter?

Honeywell recommends replacing 3-in-1 Filter O HEPA filters every 9 to 12 months.

Where can I check replacement filters for the Honeywell HPA125?

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 O 3-in-1 HEPA Replacement Filter HRFO1

The official Honeywell Plugged In Compatible with field lists HRFO1 for HPA120 and HPA125 Allergen Plus Tabletop Air Purifier models.

Source checked
Replacement guidance
Honeywell recommends replacing 3-in-1 Filter O HEPA filters every 9 to 12 months.
Guidance checked

Keep browsing

Honeywell HPA105

Filter R and Filter A Pre-Filter 1-Year Value Pack (Medium Rooms) HRF-ARVP100

Honeywell HPA104

Filter R and Filter A Pre-Filter 1-Year Value Pack (Medium Rooms) HRF-ARVP100

See all Honeywell models