Nispira Activated Carbon Pre-Filter for Holmes & Bionaire AER1 Air Purifiers

Keep your Holmes or Bionaire AER1-compatible air purifier fresh with the Nispira activated carbon pre-filter — a direct-fit alternative to the original manufacturer filter.

This carbon pre-filter helps reduce odors and particulates, giving your air purifier an extra layer of protection before air reaches the main filter.

Product Specifications

Package Includes

• 4 × Nispira activated carbon pre-filters

Installation

No tools or special expertise required.

1. Turn off and unplug your air purifier before servicing.
2. Remove the existing carbon pre-filter from the unit.
3. Confirm the filter model number or dimensions match your unit.
4. Insert the Nispira carbon pre-filter in the correct orientation.
5. Close the compartment and restart the purifier.

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

Filtration and Maintenance

The activated carbon pre-filter helps:

• Reduce household odors and particulates
• Capture larger particles such as hair and dust before they reach the main filter
• Extend the life of your HEPA or main filter by reducing debris buildup

For best results, inspect the filter periodically and replace approximately every 3 months, depending on usage and indoor air quality.

Compatibility Notice

This carbon pre-filter is designed for Holmes AER1 series air purifiers using HAPF30AT-style filters, models:

Holmes: HAP242-NUC, HAPF300AH-U4R, HAPF30AT-U4R, CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, HAP9424

Bionaire: BAP260, BAP520, BAP815, BAP825, BAP9200, BAP9700

Before ordering, compare your unit's model number and the filter's dimensions (9.5" x 4" x 0.25") with your existing filter.

Disclaimer

Nispira is an independent brand. This is an aftermarket replacement filter and is not manufactured by Holmes or Bionaire.

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