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Pre-filter and odor reduction layer

Honeywell Filter K Gas & Odor Reducing Pre-Filter (2-Pack) – HRF-K2 replacement filter

Filter K Gas & Odor Reducing Pre-Filter (2-Pack) (HRF-K2) fits Honeywell HFD-120, Honeywell HFD-300, Honeywell HFD-310 and 6 more models according to the cited Honeywell source.

Official manufacturer Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2 Check official Honeywell availability Non-affiliate link to the cited official product page.
Marketplace search Check eBay prices for HRF-K2 Sponsored eBay links. We may earn a commission from qualifying purchases.

Quick fit check

Filter K Gas & Odor Reducing Pre-Filter (2-Pack) fit and replacement facts

Part numberHRF-K2
Compatible models9
Filter rolePre-filter and odor reduction layer

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

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

Compatible Honeywell models

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

Model Filter Part number Role Source Marketplace
Honeywell HFD-120 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 Check prices
Honeywell HFD-300 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 Check prices
Honeywell HFD-310 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 Check prices
Honeywell HFD-320 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 Check prices
Honeywell HFD123 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 Check prices
Honeywell HFD140 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 Check prices
Honeywell HFD230 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 Check prices
Honeywell HFD280 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 Check prices
Honeywell HFD360 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 Check prices

Buying checklist

What to check in a filter listing

Confirm that the listing names part HRF-K2 and one of the compatible models: Honeywell HFD-120, Honeywell HFD-300, Honeywell HFD-310 and 6 more models. 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

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

Usage conditions can affect service life. Follow the cited manufacturer guidance for this 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.

Frequently asked questions

How often should I replace the Honeywell 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.

Which Honeywell models use the Filter K Gas & Odor Reducing Pre-Filter (2-Pack) HRF-K2?

According to the official Honeywell product page, Filter K Gas & Odor Reducing Pre-Filter (2-Pack) (HRF-K2) fits Honeywell HFD-120, Honeywell HFD-300, Honeywell HFD-310 and 6 more models. Verify the model label on your unit before ordering.

Do aftermarket HRF-K2 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number HRF-K2, review the listing details, and verify the model label on your unit before buying.

Manufacturer source

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.

Honeywell Plugged In Filter K 2-Pack Page

Source compatibility checked 2026-07-22. Recheck the listing and your purifier label before ordering.