Provide a Safer Learning Environment with a Portable FDA Cleared Air Purifier.

Purchase Orders

Exclusive Education

Sourcewell Awarded

Defender Air Purifier

✓ Exclusive Education Pricing Available

✓ Trusted by millions worldwide, since 1928

✓ Improve indoor air quality in classrooms, dorms and gathering spaces in schools, colleges and universities

✓ 3 times better than HEPA, filtering 99.99% of viruses, bacteria, allergens, and more down to 0.1 micron

✓ Eliminates and destroys SARS-CoV-2 virus

✓ FDA-cleared Class II Medical Device for over 20 years

Orders containing fewer than 10 units should be placed on our website.
For bulk orders above 10 units, please request a quote.

$799 $499

Buy Now
Request a Quote

Why the Defender is a smart choice for your school or university:

FDA Cleared

It Matters. For over 20 years, the Defender air purifier has been an FDA-Cleared Class II Medical Device.

Unmatched Warranty

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


Established Dependability. Millions of satisfied customers worldwide have trusted FilterQueen for nearly 100 years.

The Defender air purifier eliminates the SARS-CoV-2 virus by over 99.9% within 90 minutes.

FilterQueen Defender

FilterQueen’s filters capture 99.99% of airborne particles down to 0.1 micron. That’s even smaller than the size of a COVID particle at 0.125 micron.

Captures up to
of particles

Bronze Defender Air Purifier
Air Particles Most HEPA
Air Purifiers
Air Purifier
Paint Pigment
Carbon Dust
Tobacco Smoke
Virus Carrier
Dust Mites
Common Smoke
Lead Dust
Pet Dander

Need assistance from an air quality expert? We are here to help.

Is the Defender right for your school or college? Unsure of how many school air purifiers you need?

Contact Us Today

Proven performance you can rely on. Removes 99.99% of airborne particles down to 0.1 micron.

A better than HEPA air purifier for classrooms.

Purchasing the Defenders for our school was a wise decision. Our staff and students feel more confident knowing that the air in the classrooms are being cleaned 24 hours a day. Thank you FilterQueen!

Mrs. Keyra P. Dean
Arlington Christian Academy

Trusted by schools and universities worldwide.

The best air purifier for classrooms, labs and more.
Clean air for every space.

Computer Labs
Staff Offices
Common Areas

Let us help provide clean air for your school.

Request a Quote
Provide peace of mind for students, teachers, staff, and guests