Air Purifier | Air Cleaner | Defender

1-800-344-1840   |  

  • protect against viruses

    Stay open with confidence

    "I can't imagine why anyone wouldn't want to have a Defender in their business."

    — Walter, Restaurant Owner

  • the new normal

    Guard your health with the Defender Air Purifier

    The "new normal" has been our healthy way of life since 1928.

  • defender air cleaner

    Help protect your staff and clients

    The Defender is 3x better than standard HEPA filtration.

The Science of Clean

Give your staff and clients peace of mind knowing the Defender Room Air Purifier uses proven technology to remove harmful pollutants from the air, such as pollen, mold spores, bacteria, viruses, pet dander, dust mites, smoke particles, cooking odors, and airborne chemicals, without producing harmful ozone.

portable defender

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
  • Energy efficient
  • Quiet, 24-hour operation




Lifetime Perpetual Warranty


Hospital Tested


30-Day Risk-Free Trial

Indoor Air Pollutants

Remove harmful airborne contaminants and odors from any room in your facility.

viruses and bacteria

Viruses & Bacteria

mold spores

Mold Spores

dust mites

Dust Mites

pet dander

Allergens & Asthma



chemicals and odors

Chemicals & Odors

Provide fresh, clean air for your staff and clients

Provide fresh, clean air for your staff and clients.

Particle Size Comparison Chart

Particle size ranges can fluctuate based on plant, animal and human.

micron chart
portable defender

Lightweight & Portable

Moves easily from room to room, providing a healthier work environment.

defender cutaway

360° Intake & Exhaust

Polluted air is pulled in from all sides through both filters. Secure Seal Technology ensures that only 99.99% of pure, clean air returns to the room.

defender dentist office

Medical & Dental

Rather than just relying on the building's HVAC system capacity, the CDC recommends using a portable HEPA air filtration unit for dental procedures and in airborne infection isolation rooms.

Breathe easier with fresh, clean air


"The Police and Firefighters continued to protect us while COVID-19 spread through our communities. I want to make sure that we are doing everything we can to protect them when they come to our store. My employees are family, so I have a responsibility to provide them with the safest possible environment when they return to work. That is why we run the FilterQueen Defender all day in our store. It constantly purifies the air for both us and our valued customers."

— Stonewall Uniforms

Restaurant Owner

"Over the past several months we have been working in partnership with our architect and other expert advisers on how we can have a safe environment for our employees upon their return. While we have a ton of ideas for changes and enhancements to our offices, this is very much a work in progress and the Defenders are one product we believe will help clean the air and slow down the spread of COVID."

— Certain Affinity

3X better-than-HEPA filtration

HEPA is the industry standard (99.97% at 0.3 micron). Our filters have been independently tested to remove 99.99% of particles down to 0.1 micron.

biocone filter cone

Medi-Filter Cartridge

The Medi-Filter® Cartridge provides three times better-than-HEPA filtration to remove pollutants such as dust, dust mites, pollen and mold spores.

Shop Medi-Filter Cartridge Filters

enviropure charcoal wrap

Enviropure Charcoal Wrap

The Enviropure® Charcoal Wrap is made with HEGA (High Efficiency Gas Absorption) material, which is highly effective at reducing pollutants such as tobacco smoke, pet odors and lingering cooking odors.

Shop Enviropure Charcoal Wraps

Test-drive the Defender Air Cleaner risk-free today.