Nispira True HEPA Filter E for GermGuardian Air Purifier AC4100

Keep your GermGuardian AC4100 air purifier performing at its best with the Nispira True HEPA + activated carbon replacement filter — a direct-fit alternative to the original manufacturer filter.

This filter combines True HEPA filtration with an attached activated carbon pre-filter, capturing airborne particles while helping eliminate common household odors.

Product Specifications

Package Includes

• 1 × Nispira True HEPA filter with attached activated carbon pre-filter

Installation

No tools or special expertise required.

1. Turn off and unplug your GermGuardian air purifier before servicing.
2. Open the filter compartment and remove the existing filter.
3. Confirm the filter model number matches your unit.
4. Insert the Nispira replacement filter in the correct orientation.
5. Close the compartment and restart the purifier.

Always follow your GermGuardian purifier's manual for filter access and orientation.

Filtration and Maintenance

• True HEPA layer: Captures up to 99.97% of airborne particles as small as 0.3 microns
• Attached activated carbon pre-filter: Eliminates many common household odors, secured via velcro to the HEPA filter

Tip: The activated carbon pre-filter can be replaced separately between full HEPA filter changes — Nispira also offers a standalone carbon pre-filter refill (4-sheet pack) for FLT4100/AC4100 units.

For best results, replace the full HEPA filter approximately every 6 months, depending on usage and indoor air quality.

Compatibility Notice

This replacement filter is designed for GermGuardian air purifier models:

• AC4100, AC4100CA, AC4150BL, AC4150PCA

It replaces the original filter referenced as FLT4100 (Filter E).

Before ordering, compare your unit's model number and the filter's dimensions (8.25" x 4.63" x 1.5") with your existing filter.

Disclaimer

Nispira is an independent brand. This is an aftermarket replacement filter and is not manufactured by GermGuardian.

Brand names, trademarks, and model references are used solely to identify compatibility. Nispira is not affiliated with, sponsored by, or endorsed by GermGuardian or its trademark holders.