What filter fits a GermGuardian FLT5900 air purifier?
The GermGuardian FLT5900 air purifier uses the AXPPF155 replacement filter.
Key takeaways
- Replacement filter part number: AXPPF155 (GermGuardian).
- Not listed as True HEPA, but includes an activated carbon layer.
- Replace about every 8 months.
- A cheaper aftermarket filter can fit the same slot - check reviews for real-world fit before buying.
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Frequently asked
What filter fits a GermGuardian FLT5900 air purifier?
The GermGuardian FLT5900 uses the AXPPF155 (AIRx Replacement HEPA Filter Kit for GermGuardian FLT5900).
Is the AXPPF155 True HEPA?
No - our data doesn't list the AXPPF155 as a True HEPA filter. It may still capture larger particles, but it isn't rated to the True HEPA (99.97% at 0.3 microns) standard.
How often should I replace the AXPPF155?
About every 8 months under typical use, or sooner if airflow drops or your purifier's filter indicator lights up.
Should I buy the OEM filter or an aftermarket one?
The genuine GermGuardian AXPPF155 is the safe, exact-fit choice. A cheaper aftermarket filter can fit the same slot too - check reviews for real-world fit and filtration performance before buying, since air purifier filters generally aren't independently certified the way NSF-listed water filters are.