You deserve clean air.

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

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.


FilterQueen® Defender®

Original price was: CAD $999.00.Current price is: CAD $799.00. available on subscription from CAD $79.00 / month for 12 months

✓ Removes 99.99% of airborne pollutants

✓ 3x better than HEPA filtration

✓ Class II Medical Device

✓ Ozone-free

✓ 700sqft coverage

SKU: 57782 Category:


This portable room air purifier uses its proven technology to create a cleaner, healthier environment that is protected from harmful pollutants without producing harmful ozone.

✓ Recognized by the FDA as a Class II Medical Device

✓ 700sqft Coverage 

✓ Lifetime Perpetual Warranty

✓ Built in the USA

✓ Available for immediate 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 satisfied customers worldwide have trusted FilterQueen for nearly 100 years.

See what actual customers are saying:

We are so pleased with the Defender. I feel blessed to have our family healthy, especially living in a much older home, so I'm grateful.

Learn more about NASA’s enhancements to the Defender.

How it works

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 in size.

Free 2-Day Shipping

The Defender includes free 2-day shipping anywhere in the USA. Order today and start enjoying fresh air within 2 business days.

Unmatched Warranty

We offer a LIFETIME perpetual warranty for the Defender Air Purifier. Purchase and replace your Medi-Filter Cartridge each year and enjoy a lifetime of clean, purified air.

Over 90 Years In Business

In the last few years, other companies have tried to take advantage of the urgency to protect the indoor air. Healthy indoor air quality has been our way of life since 1928.

3x better-than-HEPA filtration

Removes 99.99% of many harmful airborne particles that standard true HEPA air filters leave behind.

Viruses & Bacteria

Mold Spores

Dust Mites

Pet Dander

Smoke Particles

Pollen & more

Meets the following EPA guidelines:

Does not produce ozone

Ozone is harmful to the environment.

No UV light

UV light is ineffective, costly and dangerous.

Effective filtration capability

3x better-than-HEPA standard.

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.

Help keep your family healthy with purified air.

Medi-Filter Cartridge

Provides three times better-than-HEPA filtration to remove harmful airborne pollutants, such as dust mites, mold spores, viruses, bacteria, pet dander, airborne chemicals and more.

Filter change frequency – 12 months

Enviropure Charcoal Wrap

Made with HEGA (High Efficiency Gas Absorption) material, which is highly effective at removing harmful pollutants and odors, such as VOCs, cigarette smoke, and more.

Filter change frequency – 6 months

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