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Honeywell air purifier

Honeywell HHT-145 replacement filter

Honeywell HHT-145 has 4 primary replacement filter parts: HRF-B1, HRF-B2, HRF-C2, HRF-N2. Match the role and part number before ordering.

Model number may also appear as Honeywell HHT/145, Honeywell HHT 145, Honeywell HHT145.

Official Honeywell fit · checked

Same filter, other models

Other Honeywell purifiers that use the same filters

Filter B+ Gas & Odor Reducing Pre-Filter (1-Pack) HRF-B1

Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) HRF-B2

Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) HRF-C2

Filter N Replacement HEPA Filters (2-Pack) HRF-N2

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

All compatible Honeywell HHT-145 filters

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

Filter Part number Type Price
Filter B+ Gas & Odor Reducing Pre-Filter (1-Pack) HRF-B1 Pre-filter and odor reduction layer Check price
Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) HRF-B2 Pre-filter and odor reduction layer Check price
Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) HRF-C2 Primary replacement filter set Check price
Filter N Replacement HEPA Filters (2-Pack) HRF-N2 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 B+ Gas & Odor Reducing Pre-Filter (1-Pack) HRF-B1

Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) HRF-B2

Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) HRF-C2

Filter N Replacement HEPA Filters (2-Pack) HRF-N2

Before you order

How to buy the right Honeywell HHT-145 filter

  • Confirm the label on your purifier reads HHT-145.
  • Make sure the listing names part HRF-B1, HRF-B2, HRF-C2, and HRF-N2, 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 B+ Gas & Odor Reducing Pre-Filter (1-Pack) HRF-B1: Honeywell recommends replacing each HRF-B1 Filter B+ pre-filter every 3 months; the package contains 1 pre-filter.
  • Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) HRF-B2: Honeywell recommends replacing each Filter B+ pre-filter every 3 months; HRF-B2 contains 2 pre-filters.
  • Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) HRF-C2: Honeywell recommends replacing each Filter C element every 6 months; HRF-C2 contains 2 Filter C elements.
  • Filter N Replacement HEPA Filters (2-Pack) HRF-N2: Honeywell recommends replacing each Filter N HEPA filter every 12 months; HRF-N2 contains 2 filters.

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 B+ Gas & Odor Reducing Pre-Filter (1-Pack) filter set HRF-B1

The calendar reminder starts 3 months after this date and repeats on that schedule.

Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) filter set HRF-B2

The calendar reminder starts 3 months after this date and repeats on that schedule.

Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) filter set HRF-C2

The calendar reminder starts 6 months after this date and repeats on that schedule.

Filter N Replacement HEPA Filters (2-Pack) filter set HRF-N2

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 HHT-145 use?

The Honeywell HHT-145 uses Filter B+ Gas & Odor Reducing Pre-Filter (1-Pack) (HRF-B1), Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) (HRF-B2), Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) (HRF-C2), Filter N Replacement HEPA Filters (2-Pack) (HRF-N2). Each part number on this page is backed by an official Honeywell source.

How often should I replace the Honeywell HHT-145 filter?

Honeywell recommends replacing each HRF-B1 Filter B+ pre-filter every 3 months; the package contains 1 pre-filter.

Where can I check replacement filters for the Honeywell HHT-145?

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 B+ Gas & Odor Reducing Pre-Filter (1-Pack) HRF-B1

The official Honeywell Plugged In Compatible with field lists HRF-B1 for HHT-055, HHT-080, HHT-081, HHT-085, HHT-090, HHT-100, HHT-145, HHT-149, HHT-155, HPA-050, HPA-150, and the HPA160, HPA245, HPA248, HPA249, and HPA600 series.

Source checked
Replacement guidance
Honeywell recommends replacing each HRF-B1 Filter B+ pre-filter every 3 months; the package contains 1 pre-filter.
Guidance checked

Filter B+ Gas & Odor Reducing Pre-Filters (2-Pack) HRF-B2

The official Honeywell Plugged In Compatible with field lists HRF-B2 for HHT-055, HHT-080, HHT-081, HHT-085, HHT-090, HHT-100, HHT-145, HHT-149, HHT-155, HPA-050, HPA-150, and the HPA160, HPA245, HPA248, HPA249, and HPA600 series.

Source checked
Replacement guidance
Honeywell recommends replacing each Filter B+ pre-filter every 3 months; HRF-B2 contains 2 pre-filters.
Guidance checked

Filter C Dual Action HEPA-Type Replacement Filters (2-Pack) HRF-C2

The official Honeywell Plugged In Compatible with field lists HRF-C2 for 16200, HHT-011, HHT-080, HHT-090, HHT-145, and HHT-149.

Source checked
Replacement guidance
Honeywell recommends replacing each Filter C element every 6 months; HRF-C2 contains 2 Filter C elements.
Guidance checked

Filter N Replacement HEPA Filters (2-Pack) HRF-N2

The official Honeywell Plugged In Compatible with field lists HRF-N2 for HPA-248-TGT, HPA-249, HHT-149, HPA-245, and the HHT-145 series.

Source checked
Replacement guidance
Honeywell recommends replacing each Filter N HEPA filter every 12 months; HRF-N2 contains 2 filters.
Guidance checked

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