white defender in large family room

Remove pollutants in large rooms.

defender on virus background

Defend against viruses, allergens and more.

Defend against viruses,
allergens and more.

defender white

The Defender portable room air purifier uses its proven technology to create a cleaner, healthier environment that is protected from harmful pollutants.  

Why choose the FilterQueen Defender Air Purifier?

✓ Lifetime perpetual warranty

✓ Built in the USA

✓ 3x better than HEPA

✓ Used in hospitals across the world

✓ Recognized as a Class II Medical Device by the FDA

✓ Whisper Quiet

✓ Ozone-Free


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.

FDA Class II Medical Device

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

Built In The USA

Our manufacturing and assembly plant is located in Ohio. We've been building FilterQueen products in the USA for over 90 years.

How the Defender Works

(1) – 360° Air Intake

The Defender takes in air from the bottom of the machine from all angles. This is important because no matter which way the machine is facing, it is taking in air from all sides.

(2) – VOC & Odor Capture

Air flows through the Enviropure Activated Charcoal Wrap, capturing numerous types of harmful VOCs and unwanted odors from the room.

(3) – Particle Capture

Air flows through the better-than-HEPA Medi-Filter Cartridge, capturing particles down to 0.1 micron in size.

(4) - 360° of Purified Air

The Defender disperses clean air into the room from the top of the machine, delivered to all parts of the room.

How small is 0.1 micron?

particle comparison chart
defender bronze


Remove indoor air pollutants from your home.

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

virus bacteria drawing

Viruses & Bacteria

mold spores drawing

Mold Spores

dust mites drawing

Dust Mites

pet dander drawing

Pet Dander

smoke drawing


pollen drawing


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)

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.

Keep your family healthy with the Defender.

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.

medi-filter cartridge

Medi-Filter Cartridge

Provides three times better-than-HEPA filtration to remove pollutants such as dust, dust mites, and mold spores.

Recommended filter change frequency:
Change once every year.

enviropure wrap

Enviropure Charcoal Wrap

Made with HEGA (High Efficiency Gas Absorption) material, which is highly effective at removing pollutants such as wildfire smoke, tobacco smoke, pet odors and lingering cooking odors.

Recommended filter change frequency:
Change every 6 months.

See how happy our customers are with the Defender.

"I have the Defender air purifier and love it. Very easy to maintain and it does an excellent job. I am a heart patient and have COPD. Living the the California Central Valley, air quality here is very bad, especially with all the wildfires this season. The Defender has really helped a lot, and I would be lost without it."

– Joe A.

Defender – Clean Air for Baby

Defender Tech Specs


17.5" height x 12.25" diameter


12 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