Replacement filter set
GermGuardian Filter U – FLT6100 replacement filter
Filter U (FLT6100) fits GermGuardian AP6100 according to the cited GermGuardian source.
FLT6100
Check official GermGuardian availability
Non-affiliate link to the cited official product page.
Quick fit check
Filter U fit and replacement facts
The cited page describes FLT6100 as a HEPA and charcoal replacement filter but does not state a replacement interval.
Compatible GermGuardian models
Follow a model link for its complete primary, optional, specialty, and alternative filter list.
| Model | Filter | Part number | Role | Source | Marketplace |
|---|---|---|---|---|---|
| GermGuardian AP6100 | Filter U | FLT6100 |
Replacement filter set | Guardian Technologies GermGuardian FLT6100 - Filter U | Check prices |
Buying checklist
What to check in a filter listing
Confirm that the listing names part FLT6100 and one of the compatible models: GermGuardian AP6100. 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
The cited page describes FLT6100 as a HEPA and charcoal replacement filter but does not state a replacement interval.
Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.
Frequently asked questions
How often should I replace the GermGuardian Filter U (FLT6100)?
The cited page describes FLT6100 as a HEPA and charcoal replacement filter but does not state a replacement interval.
Which GermGuardian models use the Filter U FLT6100?
According to the official GermGuardian product page, Filter U (FLT6100) fits GermGuardian AP6100. Verify the model label on your unit before ordering.
Do aftermarket FLT6100 filters work?
Marketplace listings may be from the manufacturer or a third party. Match the exact part number FLT6100, review the listing details, and verify the model label on your unit before buying.
Manufacturer source
Official Guardian Technologies product page identifies Filter U, SKU FLT6100, as compatible with model AP6100.
Guardian Technologies GermGuardian FLT6100 - Filter U
Source compatibility checked 2026-07-22. Recheck the listing and your purifier label before ordering.