You deserve clean air.

You deserve clean air.

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

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

See the results.

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.

three defenders
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Defender Air Purifier

✓ FDA-cleared Class II Medical Device

✓ Eliminate 99.99% of bacteria, allergens, mold and more

✓ Eliminates and destroys the SARS-CoV-2 virus and other viruses like it

✓ Lifetime Perpetual Warranty

✓ Free 2-Day Shipping

✓ For large spaces up to 700 sq. ft.

✓ FDA-cleared Class II Medical Device

✓ Eliminate 99.9% of bacteria, allergens, mold & more

✓ Eliminates and destroys the SARS-CoV-2 virus and other viruses like it

✓ Lifetime Perpetual Warranty

✓ Free 2-Day Shipping

✓ For large spaces up to 700 sq. ft.

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free shipping

Free 2-Day Shipping

Delivered Quick. The Defender includes free 2-day shipping anywhere in the USA.

Assembled In The USA

USA Assembled. From the Ohio, USA manufacturing facility directly to you.  


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

See what actual customers are saying:


"My son suffers from severe allergies from trees, grasses and weeds, and it gets tracked in and trapped in the house. But with the Defenders, it makes his life indoors tolerable. I don't have to dust as frequently, leaving me time for other things. I can't remember the last time anyone in the family was truly sick. Best investment I ever made for my family's health!"

Geraldine T.

Washington, USA


"I personally use the Defender in my home as well as in my medical office. Since using the Defender at home, I have noticed a big difference in the air quality in my house. Also, I do suffer from seasonal allergies, and I have noticed since using the Defender, I have not been congested and I am able to sleep through the night without being congested. Patients have also commented on the air quality in my office since the installation of the Defender. I would highly recommend the Defender for allergy sufferers as well as people with breathing disorders such as asthma and COPD."

John B.

North Carolina, USA



"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 and mitigate the risk associated with aerosolized infections"

MK Batra MD

California, USA



How small is 0.1 micron?

floor brush

Floor Brush

crevice tool

Crevice Tool

dusting brush

Dusting Brush

upholstery brush

Upholstery Brush

Remove indoor air pollutants from your home.

The Defender filters many harmful airborne particles that standard HEPA air filters leave behind.

Viruses & Bacteria

Mold Spores

Dust Mites

Pet Dander



FilterQueen Defender filters

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

Air Particles

Most Air
Purifier Filters

Defender Air
Purifier Filters





Dust Mites

Common Smoke

Lead Dust

Pet Dander


Paint Pigment



Carbon Dust

All Bacteria

Tobacco Smoke

Virus Carrier

360° Intake & Exhaust

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

Lightweight & portable

Moves easily from room to room, providing a healthier home, work, college, or travel environment.

Quiet, 24-hour operation

Enjoy a significant reduction in airborne pollutants and dusts, allowing you to breathe easier and get a better night's sleep.

Defender Tech Specs

FDA-Cleared Class II Medical Device

FDA Clearance:

510(k) Class II medical device (#K010616)


17.5" height x 12.25" diameter


12.75 pounds

Speed Controls:


Air Outlet:

360° Pure Top Release


Brushless high efficiency motor
(100,000 hours expected life)
120V / 60Hz / 85W


0.90 (high)
0.43 (medium)
0.27 (low)


Standard 110/120 U.S. Outlet


Polarized Type A Plug

CSA Approved:



High Speed — 65 decibels
Medium Speed — 56 decibels
Low Speed — 46 decibels

Filtration Level:

> 99.99% at 0.1 micron

Bacterial Filtration Efficiency (BFE):



Lifetime Perpetual Warranty