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Honeywell HFD-300 replacement filter

Honeywell HFD-300 uses Filter K Gas & Odor Reducing Pre-Filter (2-Pack) (part HRF-K2) as its primary replacement filter set.

People also search for this model as: Honeywell HFD/300, Honeywell HFD 300, Honeywell HFD300.

Quick fit check

Match the exact filter before buying

The official manufacturer source identifies these primary parts for the Honeywell HFD-300.

Pre-filter and odor reduction layer Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2
View part details Official Honeywell source

Cited package contents

Package details below come from the linked official source; recheck it before buying.

Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2

All compatible part numbers

Primary, optional, specialty, and alternative filters are listed separately so you can match the role as well as the part number.

Filter Part number Role Source
Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2 Pre-filter and odor reduction layer Honeywell Plugged In Filter K 2-Pack Page

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 K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2

The official Honeywell Plugged In Compatible with field lists HRF-K2 for HFD-120, HFD123, HFD140, HFD230, HFD280, HFD-300, HFD-310, HFD-320, and HFD360.

Source checked
Replacement guidance
Honeywell sells HRF-K2 as a 2-pack pre-filter set: replace Filter K pre-filters every 3 months.
Guidance checked

Buying checklist

How to choose the right replacement

Match the Honeywell HFD-300 model label and the exact part number above. Marketplace listings can be OEM or aftermarket, and a similar-looking filter may have different dimensions.

Compare the listing title, product photos, included filter pieces, seller details, delivery estimate, and total price before you order.

Care guidance

Replacement schedule

  • Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2: Honeywell sells HRF-K2 as a 2-pack pre-filter set: replace Filter K pre-filters every 3 months.

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

Optional calendar tool

Plan your next filter change

Choose a date to download a calendar reminder based on the cited replacement guidance.

Filter K Gas & Odor Reducing Pre-Filter (2-Pack) filter set HRF-K2

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.

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Frequently asked questions

What filter does the Honeywell HFD-300 use?

The Honeywell HFD-300 uses Filter K Gas & Odor Reducing Pre-Filter (2-Pack) (HRF-K2). Each part number on this page is backed by an official Honeywell source.

How often should I replace the Honeywell HFD-300 filter?

Honeywell sells HRF-K2 as a 2-pack pre-filter set: replace Filter K pre-filters every 3 months.

Where can I check replacement filters for the Honeywell HFD-300?

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.