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GermGuardian AC3200 replacement filter

GermGuardian AC3200 has 2 primary replacement filter parts: FLT51CB4, FLT5100. Match the role and part number before ordering.

GermGuardian AC3200 filter match

Replacement carbon pre-filter pack Filter O Carbon Replacement Filters (4-Pack) FLT51CB4
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View part details Official GermGuardian source
Replacement filter set Filter O FLT5100
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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 O Carbon Replacement Filters (4-Pack) FLT51CB4

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 O Carbon Replacement Filters (4-Pack) FLT51CB4 Replacement carbon pre-filter pack Guardian Technologies GermGuardian FLT51CB4 - Filter O Carbon 4-Pack Check prices
Filter O FLT5100 Replacement filter set Guardian Technologies GermGuardian FLT5100 - Filter O Check prices
Filter O PET PURE FLT5100PT Specialty replacement filter set Guardian Technologies GermGuardian FLT5100PT - Filter O PET PURE Check prices
Filter O SMOKE CLEAR FLT5100SM Specialty replacement filter set Guardian Technologies GermGuardian FLT5100SM - Filter O SMOKE CLEAR Check prices
Filter O TOXIN CLEAR FLT5100VO Specialty replacement filter set Guardian Technologies GermGuardian FLT5100VO - Filter O TOXIN CLEAR 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 O Carbon Replacement Filters (4-Pack) FLT51CB4

Official Guardian Technologies product page identifies Filter O carbon replacement filter 4-pack, SKU FLT51CB4, as compatible with models AC3200, AC3250, AC5109W and AP3250.

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Replacement guidance
GermGuardian recommends replacing the activated carbon filter layer every 2 to 3 months depending on use. Package contains 4 carbon replacement filters.
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Filter O FLT5100

Official Guardian Technologies product page identifies Filter O, SKU FLT5100, as compatible with models AC3200, AC3250, AC5109 and AP3250.

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Replacement guidance
The cited page describes FLT5100 as a True HEPA and treated-carbon replacement filter but does not state a replacement interval.
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Filter O PET PURE FLT5100PT

Official Guardian Technologies product page identifies Filter O PET PURE, SKU FLT5100PT, as compatible with models AC3200, AC3250, AC5109W and AP3250.

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Replacement guidance
GermGuardian recommends replacing the Pet Pure HEPA filter set every 6 months. Carbon filters (FLT28CB4) can be replaced every 2 to 3 months.
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Filter O SMOKE CLEAR FLT5100SM

Official Guardian Technologies product page identifies Filter O SMOKE CLEAR, SKU FLT5100SM, as compatible with models AC3200, AC3250, AC5109W and AP3250.

Source checked
Replacement guidance
GermGuardian recommends replacing the Smoke Clear HEPA filter set every 6 months. Carbon filters (FLT28CB4) can be replaced every 2 to 3 months.
Guidance checked

Filter O TOXIN CLEAR FLT5100VO

Official Guardian Technologies product page identifies Filter O TOXIN CLEAR, SKU FLT5100VO, as compatible with models AC3200, AC3250, AC5109W and AP3250.

Source checked
Replacement guidance
GermGuardian recommends replacing the Toxin Clear HEPA filter set every 6 months. Carbon filters (FLT28CB4) can be replaced every 2 to 3 months.
Guidance checked

Buying checklist

How to choose the right replacement

Match the GermGuardian AC3200 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 O Carbon Replacement Filters (4-Pack) FLT51CB4: GermGuardian recommends replacing the activated carbon filter layer every 2 to 3 months depending on use. Package contains 4 carbon replacement filters.
  • Filter O FLT5100: The cited page describes FLT5100 as a True HEPA and treated-carbon replacement filter but does not state a replacement interval.

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 O Carbon Replacement Filters (4-Pack) filter set FLT51CB4

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 AC3200 use?

The GermGuardian AC3200 uses Filter O Carbon Replacement Filters (4-Pack) (FLT51CB4), Filter O (FLT5100) as its primary replacement filter parts. It also has these optional, specialty, or alternative compatible parts: Filter O PET PURE (FLT5100PT), Filter O SMOKE CLEAR (FLT5100SM), Filter O TOXIN CLEAR (FLT5100VO). Those parts are not simultaneously required primary filters.

How often should I replace the GermGuardian AC3200 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 AC3200?

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.