The Defender’s “COVID Capture Technology” has been independently tested to eliminate and destroy the SARS-CoV-2 virus.

“COVID Capture Technology” means that the Defender has been independently tested and found to eliminate 99.9% of SARS-CoV-2 in a real-world setting (1,000 cubic foot space) within 90 minutes. Additional testing of the viability of the captured pathogen found that at least 95% of the captured pathogen in the filter was no longer viable after just the first 24 hours. The test utilized the CDC recommended MS2 Bacteriophage testing meeting the capture requirements set by the FDA Guidelines.”

covid air filter

Proven capability to eliminate 99.9% within 90 minutes and destroy over 95% within 24 hours.

99.9% reduction in 90 minutes. 95% destroyed within 24 hours. See the efficacy study summary in its entirety. Download the study here.

Independently tested by a University Hospital Infection Control Team

Conclusion from a hospital testing the FilterQueen Defender air purifier (FQD):

“Despite its compactness and significantly lower price (80% less as compared to standard mobile HEPA filters), the FQD has shown to be highly effective in purifying air, as expressed by the lower particle count and absence of fungal spores within 1 hour.



Based upon this experience, we decided to purchase multiple FQD devices that are now routinely used throughout the hospital in high-risk settings, such as during construction works or to prevent airborne infection in isolation rooms.”
covid air filter

Used by doctors to mitigate the risk associated with aerosolized infections

From waiting rooms, the crowded lobbies, to patient rooms, medical professionals are using the Defender air purifier to help. See what doctors are saying:

“With the amount of patient traffic and doctors we have in our clinic, I’ve gone ahead and put the Defender in each of our three office locations to try to mitigate the risk associated with aerosolized infections.”

–MK Batra, MD

Why the Defender is a smart choice:

100% Refundable,
30 Day Trial

Worry Free. If you are unsatisfied with your purchase, simply return your Defender for a full refund within 30 days.

COVID Capture Technology

Verified Results. 99.9% capture rate, with over 95% of the captured pathogen verified as destroyed in the first 24 hours.

Unmatched Warranty

Peace of Mind. The Defender includes an industry leading LIFETIME perpetual warranty.

Discover the benefits of the FilterQueen Defender

The Defender is recognized by the FDA as a Class II Medical Device and is built in the USA with pride.

  • Filters 99.99% of particles down to 0.1 micron
  • Effective in small to large rooms
  • 3x better-than-HEPA filtration
  • Removes hundreds of noxious gases
  • Energy efficient
  • Quiet, 24-hour operation
  • Available in Black or White

$799

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