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GermGuardian replacement filter

GermGuardian Filter E tabletop models

GermGuardian lists HEPA PURE Filter E combination filter, FLT4100, for the US model codes below. The Amazon action searches this reference; no exact retail product or pack has been approved.

Models listed by the manufacturer

  • AC4100
  • AC4175
  • AC4175W
  • AC4150PCA
  • AC4150BLCA

Models checked: US. Match the full code on your label.

Where is my model number?

Before you buy

  • Do not expand AC4150 into unlisted suffixes.
  • HEPA and carbon layers describe one combination filter, not separately approved merchant items.
  • These manufacturer-listed model codes cover US specifications. Another regional variant needs its own check.
  • The Amazon action is a reference search; no exact retail product, seller or pack has been approved.
Find the complete model code
  1. Read the complete GermGuardian model on the purifier label and retain every letter, digit and suffix.
  2. Match the label with one of the manufacturer-listed US codes on this page.
  3. Compare FLT4100, components and quantity on the final merchant listing; the search does not approve the listed item or pack.
Filter and fitting details
  • Product Features explicitly names AC4100, AC4175, AC4150PCA and AC4150BLCA. The Product Overview separately names AC4175W.
  • Only one combination filter is replaced for one change; multi-pack count is not the number of layers.

Manufacturer sources

Documentation checked Oct 12, 2026 by Codex (manufacturer documentation). We have not physically tested these filters.

GermGuardian filterFLT4100
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