Model compatibility ledger

GermGuardian AC5000 Series replacement filter

Use this model page to match the purifier body label to the OEM filter SKU, compatible alternatives, sizing notes, and retailer listings before ordering.

OEM filter SKU

FLT5000

Replacement interval

Every 8 months

Annual filter estimate

$45-$110

OEM filter first

GermGuardian FLT5000 Filter C

Tall GermGuardian tower purifier family.

Model numbers: AC5000, AC5000E, AC5250PT
Aliases: GermGuardian 28 inch tower
Dimensions: Filter C size for taller AC5000-family towers.

Last reviewed 2026-05-29. Match both purifier model and filter SKU because retailers often group similar cartridges together.

OEM and compatible filter comparison

OEM entries are shown first. Compatible alternatives are not manufacturer-approved unless marked OEM.

Check	OEM filter	Compatible option
Manufacturer-recommended filter	FLT5000 · GermGuardian FLT5000 Filter C	FLT5000 · GermGuardian FLT5000 Filter C Filter C size for taller AC5000-family towers. Annual estimate: $45-$110.

Retailer options for FLT5000

Amazon

GermGuardian FLT5000 filter

Varies by listing

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Price note: Check retailer listing for current price.
Availability note: Use the SKU and model notes here to confirm fit before checkout.
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Check retailer listing

Verify the purifier model and filter SKU on the retailer page before ordering.

GermGuardian

FLT5000 Filter C