MinusA2 Ultra Quiet Air Purifier
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The MinusA2
Ultra Quiet Air Purifier
Starting at $459.95
Model:
Wall Mount:
Customized Filter:
  • Overview
  • Explore
  • Features
  • Compare
  • Filter System

MinusA2 air purifier mounted on the wall

Reliable Backed by industry leading five-year warranty and 24/7 lifetime technical support. Learn more

Thorough 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 highest setting.

Adaptable The MinusA2 is designed to either stand alone or to be mounted on the wall.

Ultra Quiet The cutting edge BLDC motor operates at five different speeds. It’s virtually silent at the lowest speed. Learn more

Energy Efficient Energy Star certified units will not run up your energy bill.


Six-stage purification & deodorization

MinusA2 filtration stage

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 >


BioGS HEPA filter comparison

Compare BioGS HEPA to conventional filterCommon 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.

Typical HEPA Filter BioGS HEPA Filter
Traps allergen and particles at 99.97% efficiency down to 0.3 microns
Reduces common allergens including dust mites, mold, pollen and pet dander* --
Reduces the growth of bacteria and viruses on the filter** --
Prolongs 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 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

MinusA2 dimension 20.25 x 21.4 x 7 inches 20.25H x 21.4W x 7D (inches)

Download manual


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 $42.50 (12hr/day operation)
$85.00 (24hr/day operation)
Learn more about Maintenance
Warranty 5 Years
Support 24/7 Technical Support
Power Requirements 120V AC 60 Hz

Airflow diagram

MinusA2 air purifier air flow 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.

360 degree view of minusa2 air purifier minusa2 in 360 view

MinusA2 photo gallery


Explore the MinusA2

Air outlet on top Fan speed Auto or Pollen Mode Negative ions Power button Sleep mode Light sensor Air quality indicator Odor sensor Mood light Air intake around front panel Floor stand is removable
for wall mounting
Filter replacement indicator Filter reset button

Key benefits

Energy efficientEnergy Star certified units will not run up your energy bill.

Ultra quietThe cutting edge BLDC motor operates at five different speeds. It’s virtually silent at low speed. Learn more

ThoroughThe MinusA2 SPA-7000A 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 high setting.

Negative ionProduces beneficial negative ions to fortify the air you breathe and freshen your indoor environment.

Superior qualityWith a 5 years warranty on parts and labor and 24/7 technical support, the MinusA2 is one of the highest quality air purifiers you can find.

AdaptableThe MinusA2 is designed to either stand alone or to be mounted on the wall.


Intelligent purification

Auto air quality monitoringThe unit will automatically adjust the fan speed based on the air quality sensors.

Child proof safety designA childproof feature pauses air purifier operation when the front panel is removed.

SmartA light sensor will automatically transition the unit to sleep mode when the MinusA2 is in a dark room, and resumes a more active mode when light levels increase.

Filter replacement indicatorAutomatically reminds you when filters need to be replaced.

Mood lightWind down with the LED mood light on the front panel, which can be turned on to produce a soothing spectrum of colors, or light your path in the dark.

We've got you covered

remove air borne dust, particles, odors

Large particles Dust mites Pet hair Pollen Dust particles Cooking odors Tobacco smoke Exhaust fumes

Dander Mold & fungi Bacteria Pet allergens Particles that can
carry viruses
Greenhouse gases VOCs Household odor


Six-stage purification & deodorization

Pre-filter (washable and permanent):
The Pre-Filter effectively traps and reduces large sized allergens, dust, and particles.

Medium Filter*:
The Medium Filter traps and reduces airborne particles larger than 1 micron in size, such as pollen, mold, and pet dander.

BioGS HEPA Filter*:
The BioGS HEPA filter traps airborne particles down to 0.3 microns in size, 99.97% of the time, and reduces common allergens to support optimum filter efficiency and prolong filter life.

Negative Ion Generator:
Produces beneficial negative ions to fortify the air you breathe and freshen your indoor environment.

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

Toxin Absorber
Traps and reduces volatile organic compounds (VOCs) and other chemicals. Learn more >

Pet Allergy
Traps and reduces pet dander and pet odors. Learn more >

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

Charcoal-Based Activated Carbon Filter*:
Made of high grade granular activated carbon, this filter effectively reduces chemicals and common household odors.

*Lasts up to 2 years based on 12 hr/day operation


Replacement filters

MinusA2™ SPA-700A / SPA-780A
Filter Replacement Kit
MinusA2™ SPA-700A / SPA-780A
Customized Filter
MinusA2™ SPA-700A / SPA-780A
Pre-filter

BioGS HEPA filter comparison

Compare BioGS HEPA to conventional filterCommon 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.

Typical HEPA Filter BioGS HEPA Filter
Traps allergen and particles at 99.97% efficiency down to 0.3 microns
Reduces common allergens including dust mites, mold, pollen and pet dander* --
Reduces the growth of bacteria and viruses on the filter** --
Prolongs 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

Charcoal-Based Activated Carbon Filter

The Rabbit Air activated carbon filter uses high grade granular activated carbon to purify the air. The performance of our AC filter is much higher than a typical AC filter, which is merely coated with a thin layer of activated carbon. Chemicals and odors from cooking, pets, smoke, VOCs and other sources can be effectively eliminated.

odor removal