restaurant testimonial

Stay open with confidence

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

— Walter, Restaurant Owner

defender for business

Stay open with confidence.

defender white

Defender Air Purifier

✓ FREE 2-Day shipping

✓ FREE 1 year supply of filters included

✓ Lifetime perpetual warranty

✓ Assembled in the USA

✓ 3x better than HEPA filtration

✓ Used in hospitals

✓ Class II Medical Device

✓ Quiet, 24-hour operation

✓ Ozone-free


Amazon – 4.5 stars

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Defender Air Purifier


Amazon – 4.5 stars

✓ Removes 99.99% of airborne pollutants

✓ 3x better than HEPA filtration

✓ Class II Medical Device

✓ Ozone-free

defender white
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100% Refundable,
30 Day Trial

If you are unsatisfied in any way with your purchase, simply return your Air Purifier for a full refund within 30 days.


Class II Medical Device

The Defender is recognized by the FDA as a Class II Medical Device and is hospital tested.


Assembled In The USA

Our manufacturing and assembly plant is located in Ohio. We have been assembling FilterQueen products right here in the USA.

How does the Defender work?

(1) – 360° Air Intake

The lower half of the Defender pulls air in from every angle, no matter which way the machine is facing.

(2) – VOC & Odor Capture

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

(3) – Particle Capture

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

(4) - 360° of Purified Air

The Defender circulates clean air back into the room from the top half of the machine.

defender cutaway

How small is 0.1 micron?


Free 2-Day Shipping

The Defender Air Purifier 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.

Remove indoor air pollutants from your home.

The Defender removes 99.99% of harmful airborne particles that standard HEPA air filters leave behind.

virus bacteria drawing

Viruses & Bacteria

mold spores drawing

Mold Spores

Dust Mites

Pet Dander


Pollen & More

Remove indoor air pollutants from your home.

The Defender removes 99.99% of harmful airborne particles that standard HEPA air filters leave behind.

viruses and bacteria drawing

Viruses & Bacteria

mold spores drawing

Mold Spores

dust mites drawing

Dust Mites

pet dander drawing

Pet Dander

smoke drawing


pollen drawing

Pollen & More

Office buildings

The Defender moves easily from room to room, providing a healthier work environment.

Medical & Dental Offices

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.

Restaurants & Bars

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.


There is no doubt that the decision is difficult for parents to make in regard to sending their children back to school. You can help make their decision easier by cleaning the air in each classroom with the Defender Air Purifier.

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)

Provide fresh, clean air for your staff, patients or clients.

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.

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. For best results, change every 12 months for homes with pets or smokers.

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 3-6 months. For best results, change every 3 months for homes with pets or smokers.

Breathe easier with fresh, clean air.

See how happy our customers are with the Defender.


"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

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