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What is HEPA?

HEPA stands for High Efficiency Particulate Air. One of the only filtration technologies capable of removing even the smallest particles, HEPA filters are commonly used in controlled environments around the world, including hospital operating rooms, ICUs and incubators, and even medical laboratories and other high-tech research and manufacturing facilities.

Why Is BioGS HEPA filtration better?

Our advanced BioGS HEPA filtration system builds and improves on the traditional HEPA—composed of an electrostatic-charged proprietary fiber material, it traps particles as small as 0.1 microns in size at 99% efficiency3. Unlike traditional HEPA filters that might allow the growth of bacteria and viruses over time, our BioGS HEPA filters trap and reduce common allergens1 and bacteria2 trapped on the filter to support optimum filter efficiency and prolong filter life.

Rabbit Air BioGS HEPA Filter

Common allergens 1 and bacteria 2 trapped and reduced by the BioGS HEPA filter over time.
Features BioGS HEPA Filter Typical HEPA Filter
Traps allergen and particles 0.3 microns in size at 99.97% efficiency and over 99% efficiency for particles less than 0.1 microns3 Yes Yes
Reduces common allergens1 Yes No
Reduces the growth of bacteria and viruses on the filter2 Yes No
Prolongs optimal filter efficiency Yes No

How does it filter?

In addition to the four standard trapping mechanisms of conventional HEPA filters, our BioGS filter adds another: electrostatic attraction. This advanced mechanism ensures the highest performance for even for the smallest particles.

Sieving: Large particles get trapped between filter fibers.
Inertial Impaction: Smaller airborne particles slam into filter fibers and get stuck as the air travels through the filter at high speed.
Interception: Lighter particles that follow the air stream can be captured on the fibers as it flows through.
Diffusion: Air and gas molecules help derail the trajectory of particles that are smaller than 0.3 microns. This makes it almost impossible for the particles to pass through the filter without getting captured by its fibers.
Electrostatic: Our BioGS HEPA filters are electrostatically charged—The particles flowing through the filter are attracted to the charged fibers.

Measured Performance

Rabbit Air's purifiers all use BioGS HEPA filters. Independent test shows our air purifier quickly reduces a plethora of pollutants from the air in a room.

Common Household Allergen Reduction Tests

Allergen 4

99% Reduction
in 50 minutes
Rabbit Air
Natural Decay

Pet Dander & Dust Mite Matter 5

94.8% Reduction
in 1 hour
93.7% Reduction
in 1 hour

Bacteria, Mold & Virus Reduction Tests 6

Bacteria (E. coli)

99% Reduction
in 30 minutes

Mold (A. niger)

99% Reduction
in 30 minutes

Virus (MS2)

98% Reduction
in 45 minutes

VOC Reduction Tests 7


90% Reduction
in 1 hour


86% Reduction
in 1 hour


90% Reduction
in 1 hour


82% Reduction
in 1 hour


91% Reduction
in 1 hour


1. Test samples: Aspergillus niger, Penicillium citrinum, Chaetomium globosum
2. Test samples: type A influenza virus(H1N1), Escherichia Coli, Staphyllococcus aureus
3. Test data shows our HEPA filter (brand new or like-new) can trap particles 0.3 microns in size at 99.97% efficiency, and our air purifiers are able to remove 99.9% of 0.1 micron-sized particles from the air. Research data shows True HEPA-rated filters can trap particles less than 0.1 microns in size at higher than 99% efficiency. For more info, see, pp.11–21.
4. Allergen reduction testing performed by IBR Laboratories.
5. Pet dander (Fel d1) and dust mite (Der p1) allergen reduction testing performed by Airmid Healthgroup.
6. Microbial Reduction Rate test performed by Intertek laboratories.
7. VOC Reduction test performed by Intertek laboratories.
† Photo illustration only and do not represent actual filter performance.

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