MinusA2 Ultra Quiet Air Purifier
Twitter Email
MinusA2 Air Purifier
MinusA2 University Edition HEPA Air Purifier
Starting at $499.95
Wall Mount:
Customized Filter:
  • Overview
  • Compare
  • Gallery
  • Features
  • Filters and Accessories
  • How It Works

Large Coverage Area The MinusA2 SPA-700A air purifier will filter all of the air in a room up to 700 sq. ft. (or 815 sq. ft. for the SPA-780A) twice in an hour on the turbo setting.

Energy Efficient Energy Star Certified. Inexpensive to operate. Only consumes 7 Watts at silent speed.

Slim, Stylish Design with Wall-Mount The only air purifier designed to either stand alone or be mounted on the wall. Floor stand is included with unit and can be easily removed for wall-mount.

Ultra Quiet The heart of this air purifier is the Brushless Direct Current Motor, an innovative motor with inverter control that offers 5 different speeds of operation. When operating at low speed, the air purifier's motor barely makes a sound.

Superior Quality The MinusA2 is one of the highest quality air purifiers you can find. Manufactured in Korea, it includes a 5-year warranty on parts and labor and 24/7 technical support.

Six Stage Purification The unit includes a six stage purification system and an activated carbon filter to fight off odors. Our BioGS HEPA will trap and reduce 99.97% of particles that pass through the filter down to 0.3 microns in size.

Customized Filters
Choose a customized filter to boost the filtration of specific types of allergens and pollutants.

Germ Defense Filter: Effectively traps and reduces airborne bacteria, mold spores and particles that carry viruses.
Learn more >

Pet Allergy Filter: Traps and reduces pet dander and pet odors.
Learn more >
Toxin Absorber Filter: Traps and reduces volatile organic compounds (VOCs) and other chemicals.
Learn more >

Odor Remover Filter: Traps and reduces odors from pets, cigarettes and cigars, cooking and mildew.
Learn more >

Comparison between BioGS HEPA filter and typical HEPA filter
Common allergens* and bacteria** on typical HEPA filter over time.

Common allergens* and bacteria** trapped and reduced by the BioGS HEPA filter over time.

Typical HEPA air purifiers trap allergens and contaminants, which accumulate on the filter and interfere with efficiency. The BioGS HEPA filter traps and reduces common allergens* to support optimum filter efficiency and prolong filter life.

yes     -- noTypical HEPA FilterBioGS HEPA Filter
Filter Fiber MaterialRegular Glass/Paper FiberBioengineered Fiber
Traps allergen and particles down to 0.3 microns
Reduces common allergens including dust mites, mold, pollen and cat dander*--
Reduces the growth of bacteria and virus in the filter**--
Maintains a longer optimal filter efficiency--
Alleviates common household odors --
*Test samples: Mite allergen (Der f2), Cedar pollen allergen (Cry j1), 4 types of mixed spores (Aspergillus niger, Penicillium citrinum, Chaetomium globosum, Myrothecium verrucaria), Cat allergen (fel d1)
**Test samples: Type A influenza virus(H1N1), Escherichia Coli, Staphyllococcus aureus

What's in the box

  • MinusA2 air purifier
  • Remote with AAA batteries (2)
  • Filter Case
  • Warranty Card
  • User's Manual
  • Pre-Filter
  • Medium Filter
  • BioGS HEPA Filter
  • Customized Filter
  • Activated Carbon Filter

Size of product

20.25H x 21.4W x 7D (inches)

Download Manual and Instructions

Technical Data

MinusA2 SPA-700A MinusA2 SPA-780A
Weight 19.4 lbs.
Power Cord Length 9.33 ft.
Effective Coverage Area Normal Residential Use
(2 ACPH): 700 sq. ft.

Allergy Sufferer
(4 ACPH): 350 sq. ft.
Normal Residential Use
(2 ACPH): 815 sq. ft.

Allergy Sufferer
(4 ACPH): 408 sq. ft.
Power Consumption 7 to 47 watts
7 to 61 watts
Noise Level 20.8 to 45.6 dBA
25.6 to 51.3 dBA
CADR Pollen Dust Smoke
201 200 193
Pollen Dust Smoke
208 200 193
Annual Filter Cost $37.50 (12hr/day operation)
$75.00 (24hr/day operation)
Learn more about Maintenance
Warranty 5 Years
Support 24/7 Technical Support
Power Requirements 120V AC 60 Hz

Airflow Diagram

Inlet: Indoor air is drawn through the filters 360 degrees around the front panel.

Outlet: Clean air is expelled from the back of the unit in an upward direction towards the room.

MinusA2 in 360 degrees

360 degree view of minusa2 air purifier
MinusA2 Control Panel Description

Mood Lights

Continuous Air Quality monitoring & Auto Operation
Particle and odor sensors change the speed of the air purifier based on the current indoor air quality.

Set and Run at any Speed
You can set your MInusA2 at any of five speeds from silent to turbo.

Child Proof Safety Design
Unit will automatically shut off when front panel is removed.

Light-Activated Sleep Mode
The light sensor detects the brightness in a room and adjusts accordingly. The unit automatically switches to sleep mode when a room has been dark for three minutes. In Sleep mode, the unit operates at an ultra quiet level while still maintaining optimum efficiency. It turns itself back to Auto Mode after the lights are detected.


Night Light and Mood Light
As well as delivering pure and clean air, the MinusA2 is the only air purifier in the U.S. that features an alternating mood light. This unique feature helps induce calmness and relaxation.

Activated Carbon Deodorization
Charcoal based activated carbon filter eliminates many common household odors, volatile organic compounds and household chemical smells.

Remote Control
Control your mInusA2 air purifier from the distance.


Six Stages of Purification and Deodorization

MinusA2 Filtration Stages

What it Removes:

  • Pre-Filter
    .Large particles | Pet hair | Dust | Mold
  • Medium Filter
    .Bacteria | Pollen | Dust particles | Mold
  • BioGS HEPA Filter
    .Fungus | Bacteria | Dust mites | Pollen | Allergens | Household odors | Mold
    .Dust particles | Tobacco smoke | Greenhouse gases (NOx & SOx) | Dander
  • Customized Filter
    • Germ Defense
      .Allergens | Mold | Bacteria | Particles that can carry viruses
    • Pet Allergy
      .Pet dander | Bacteria | Pet odors | Dander that can carry viruses
    • Toxin Absorber
      .Chemical Substances | Off-gassing | Greenhouse gases | Cigarette odor | VOCs | Formaldehyde
    • Odor Remover
      .Tobacco smoke | Household odors | Cooking odors | Pet odors | Musty odors
  • Charcoal Based Activated Carbon Filter
    .Tobacco smoke | VOCs | Chemical substances | Household odors | Cooking odors | Pet odors | Exhaust fumes


Tailor the MinusA2 air purifier to fit your personal needs. Choose from a variety of customized filters including Germ Defense, Pet Allergy, Odor Remover, or Toxin Absorber. Each filter is specially engineered to trap and reduce different types of germs, chemicals, odors and allergens.

Rabbit Air MinusA2 Germ Defense Customized Filter

Germ Defense Customized Filter: The Germ Defense filter is specially engineered to trap and reduce bacteria, mold and particles that carry viruses.
This filter is perfect for children, elderly people, and those with compromised immune systems who are most sensitive to particles in the air.

pet allergy customized filter

Pet Allergy Customized Filter: The Pet Allergy filter is specially engineered to trap and reduce pet dander and pet odors. By reducing these contaminants, it allows you and your family to breathe in comfort at home.

Rabbit Air MinusA2 Toxin Absorber Customized Filter

Toxin Absorber Customized Filter:The Toxin Absorber filter is specially engineered to trap and reduce volatile organic compounds (VOCs) and other chemicals. It is perfect for offices and new or renovated homes.
Rabbit Air MinusA2 Toxin Absorber Customized Filtertest result

Rabbit Air MinusA2 Odor Remover Customized Filter

Odor Remover Customized Filter: The Odor Remover filter is specially designed to trap and alleviate odors from pets, cigarettes and cigars, cooking, and mildew.
Rabbit Air MinusA2 Odor Remover Customized Filter Comparison