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GermGuardian AC4870 replacement filter

GermGuardian AC4870 has 2 primary replacement filter parts: FLT22CB4, FLT4825. Match the role and part number before ordering.

GermGuardian AC4870 filter match

Replacement carbon pre-filter pack Filter B Carbon Replacement Filters (4-Pack) FLT22CB4
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View part details Official GermGuardian source
Replacement filter set Filter B FLT4825
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View part details Official GermGuardian source

Cited package contents

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

Filter B Carbon Replacement Filters (4-Pack) FLT22CB4

All compatible part numbers

Primary filters are listed first. Specialty, optional, and alternative filters are compatible options, not required add-ons.

Filter Part number Role Source Marketplace
Filter B Carbon Replacement Filters (4-Pack) FLT22CB4 Replacement carbon pre-filter pack Guardian Technologies GermGuardian FLT22CB4 - Filter B Carbon 4-Pack Check prices
Filter B FLT4825 Replacement filter set Guardian Technologies GermGuardian FLT4825 - Filter B Check prices
Filter B Cannabis Smoke FLT420B Specialty replacement filter set Guardian Technologies GermGuardian FLT420B - Filter B Cannabis Smoke Check prices
Filter B SMOKE CLEAR FLT4825SM Specialty replacement filter set Guardian Technologies GermGuardian FLT4825SM - Filter B SMOKE CLEAR Check prices
Filter B TOXIN CLEAR FLT4825VO Specialty replacement filter set Guardian Technologies GermGuardian FLT4825VO - Filter B TOXIN CLEAR Check prices
Filter B PET PURE FLT4850PT Specialty replacement filter set Guardian Technologies GermGuardian FLT4850PT - Filter B PET PURE Check prices

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 Carbon Replacement Filters (4-Pack) FLT22CB4

Official Guardian Technologies product page identifies Filter B carbon replacement filter 4-pack, SKU FLT22CB4, as compatible with models AC4300, AC4900, AC4825, AC4870, CDAP4500, AC4820, AP2200CA and BXAP148.

Source checked
Replacement guidance
GermGuardian recommends replacing the activated carbon filter layer every 2 to 3 months depending on use. Package contains 4 carbon replacement filters.
Guidance checked

Filter B Cannabis Smoke FLT420B

Official Guardian Technologies product page identifies Filter B Cannabis Smoke, SKU FLT420B, as compatible with models AC4300, AC4820, AC4825, AC4850PT, AC4870, AC4880, AC4900, AP2200CA and CDAP4500.

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Replacement guidance
The cited page describes FLT420B as a cannabis-smoke replacement filter but does not state a replacement interval.
Guidance checked

Filter B FLT4825

Official Guardian Technologies product page identifies Filter B, SKU FLT4825, as compatible with models AC4300, AC4820, AC4825, AC4850PT, AC4870, AC4880, AC4900 and CDAP4500.

Source checked
Replacement guidance
The cited page states that FLT22CB4 carbon pre-filters can be replaced every 2 to 3 months to extend filter life; it does not state a replacement interval for FLT4825.
Guidance checked

Filter B SMOKE CLEAR FLT4825SM

Official Guardian Technologies product page identifies Filter B SMOKE CLEAR, SKU FLT4825SM, as compatible with models AC4300, AC4820, AC4825, AC4850PT, AC4870, AC4880, AC4900, AP2200CA and CDAP4500.

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Replacement guidance
GermGuardian recommends replacing the Smoke Clear HEPA filter set every 6 months. Carbon pre-filters (FLT22CB4) can be replaced every 2 to 3 months.
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Filter B TOXIN CLEAR FLT4825VO

Official Guardian Technologies product page identifies Filter B TOXIN CLEAR, SKU FLT4825VO, as compatible with models AC4300, AC4820, AC4825, AC4850PT, AC4870, AC4880, AC4900 and CDAP4500.

Source checked
Replacement guidance
GermGuardian recommends replacing the Toxin Clear HEPA filter set every 6 months. Carbon pre-filters (FLT22CB4) can be replaced every 2 to 3 months.
Guidance checked

Filter B PET PURE FLT4850PT

Official Guardian Technologies product page identifies Filter B PET PURE, SKU FLT4850PT, as compatible with models AC4300, AC4820, AC4825, AC4850PT, AC4870, AC4880, AC4900 and CDAP4500.

Source checked
Replacement guidance
GermGuardian recommends replacing the Pet Pure True HEPA filter every 6 months to maintain optimal performance. Carbon pre-filters (FLT22CB4) can be replaced every 2 to 3 months to extend filter life.
Guidance checked

Buying checklist

How to choose the right replacement

Match the GermGuardian AC4870 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 B Carbon Replacement Filters (4-Pack) FLT22CB4: GermGuardian recommends replacing the activated carbon filter layer every 2 to 3 months depending on use. Package contains 4 carbon replacement filters.
  • Filter B FLT4825: The cited page states that FLT22CB4 carbon pre-filters can be replaced every 2 to 3 months to extend filter life; it does not state a replacement interval for FLT4825.

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 B Carbon Replacement Filters (4-Pack) filter set FLT22CB4

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

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Frequently asked questions

What filter does the GermGuardian AC4870 use?

The GermGuardian AC4870 uses Filter B Carbon Replacement Filters (4-Pack) (FLT22CB4), Filter B (FLT4825) as its primary replacement filter parts. It also has these optional, specialty, or alternative compatible parts: Filter B Cannabis Smoke (FLT420B), Filter B SMOKE CLEAR (FLT4825SM), Filter B TOXIN CLEAR (FLT4825VO), Filter B PET PURE (FLT4850PT). Those parts are not simultaneously required primary filters.

How often should I replace the GermGuardian AC4870 filter?

GermGuardian recommends replacing the activated carbon filter layer every 2 to 3 months depending on use. Package contains 4 carbon replacement filters.

Where can I check replacement filters for the GermGuardian AC4870?

This page links directly to the cited official GermGuardian 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.