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Specialty replacement filter set

GermGuardian Filter O SMOKE CLEAR FLT5100SM replacement filter

Filter O SMOKE CLEAR (part FLT5100SM) fits GermGuardian AC3200, GermGuardian AC3250, GermGuardian AC5109W and GermGuardian AP3250, according to the official GermGuardian product page.

Official GermGuardian fit · checked

GermGuardian models that use Filter O SMOKE CLEAR FLT5100SM

This filter is listed for 4 models. Open a model to see its complete list of primary, optional, and specialty filters.

Before you order

What to check in a FLT5100SM listing

  • The listing names part FLT5100SM. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: GermGuardian AC3200, GermGuardian AC3250, GermGuardian AC5109W and GermGuardian AP3250.
  • The pack size and pieces included match what you need. Genuine and third-party filters can differ.
  • The total price with shipping, seller feedback, and delivery estimate work for you.

Care guidance

Replacement schedule

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

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

Compare compatible options

These share at least one compatible model but may do a different job, such as a carbon pre-filter or a specialty version. Check each part page before buying.

Replacement filter set

Filter O

FLT5100

Frequently asked questions

How often should I replace the GermGuardian Filter O SMOKE CLEAR (FLT5100SM)?

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

Which GermGuardian models use the Filter O SMOKE CLEAR FLT5100SM?

According to the official GermGuardian product page, Filter O SMOKE CLEAR (FLT5100SM) fits GermGuardian AC3200, GermGuardian AC3250, GermGuardian AC5109W and GermGuardian AP3250. Verify the model label on your unit before ordering.

Do aftermarket FLT5100SM filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number FLT5100SM, review the listing details, and verify the model label on your unit before buying.

Official compatibility record

Manufacturer source

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

Guardian Technologies GermGuardian FLT5100SM - Filter O SMOKE CLEAR

Source compatibility checked 2026-08-29. Recheck the listing and your purifier label before ordering.