Which Model is Best for You

Choose BioGS Air Purifiers for: General air quality issues such as dust and allergen removal General household odors and chemicals Seasonal allergies

Choose MinusA2 Air Purifiers for: Musty odors from cigarettes, mildew, mold etc. (Choose Odor Remover customized filter) Bacteria, virus and mold removal. Perfect for people such as babies, kids, elderly people, and those weakened by illness. (Choose Germ Defense customized filter) VOCs and chemical fumes (Choose Toxin Absorber customized filter) Heavy pet dander (Choose Pet Allergy customized filter) Severe allergies

All Models	Explore	Explore	Explore	Explore
Room Coverage (based on 2 air changes per hour)	up to 815 sq. ft.	up to 700 sq. ft.	up to 780 sq. ft.	up to 600 sq. ft.
Dimension (inches)	20H x 21.4W x 7D	20H x 21.4W x 7D	22.5H x 18W x 9D	22.5H x 18W x 9D
Warranty	5 Years	5 Years	5 Years	5 Years
Price	$549.95	$459.95	$399.95	$329.95
True HEPA Filtration	Yes	Yes	Yes	Yes
Air Purification Stages	1 - Pre-Filter 2 - Medium Filter 3 - HEPA Filter 4 - Customized Filter 5 - Charcoal Filter 6 - Negative Ions	1 - Pre-Filter 2 - Medium Filter 3 - HEPA Filter 4 - Customized Filter 5 - Charcoal Filter 6 - Negative Ions	1 - Pre-Filter 2 - HEPA Filter 3 - Charcoal Filter 4 - Negative Ions	1 - Pre-Filter 2 - HEPA Filter 3 - Charcoal Filter 4 - Negative Ions
Ozone Emissions	Zero*	Zero*	Zero	Zero
CADR	208 Pollen 200 Dust 193 Smoke	201 Pollen 200 Dust 193 Smoke	217 Pollen 197 Dust 188 Smoke	163 Pollen 145 Dust 144 Smoke
Air Flow (Cubic Feet per minute)	Speed 1 - 58 CFM Speed 2 - 80 CFM Speed 3 - 112 CFM Speed 4 - 159 CFM Speed 5 - 218 CFM	1 - 47 CFM 2 - 64 CFM 3 - 97 CFM 4 - 140 CFM 5 - 187 CFM	1 - 39 CFM 2 - 85 CFM 3 - 131 CFM 4 - 170 CFM 5 - 208 CFM	1 - 39 CFM 2 - 60 CFM 3 - 95 CFM 4 - 139 CFM 5 - 159 CFM
Noise Level (Decibels)	Speed 1 - 25.6 dBA Speed 2 - 31.1 dBA Speed 3 - 37.4 dBA Speed 4 - 44.5 dBA Speed 5 - 51.3 dBA	1 - 20.8 dBA 2 - 24.6 dBA 3 - 31.3 dBA 4 - 39.2 dBA 5 - 45.6 dBA	1 - 19.1 dBA 2 - 30.6 dBA 3 - 39.7 dBA 4 - 44.8 dBA 5 - 49.1 dBA	1 - 18.4 dBA 2 - 25.9 dBA 3 - 34.2 dBA 4 - 39.9 dBA 5 - 45.0 dBA
Filter Life Span	1 - 2 years	1 - 2 years	1.5 - 3 years	1.5 - 3 years
Annual Filter Replacement Cost (based on 24/7 continuous operation)	$75	$75	$41	$41
Power Consumption:	6 to 61 watts (Energy Star)	6 to 47 watts (Energy Star)	7 to 60 watts	7 to 36 watts
Colors Available	White Black	White	Chrome Silver Pearl White Lime Green Metallic Blue	Chrome Silver Pearl White Lime Green Metallic Blue
Stand Alone / Wall Mountable	Stand Alone / Wall Mountable	Stand Alone / Wall Mountable	Stand Alone	Stand Alone
Ultra Quiet	Yes	Yes	Yes	Yes
Particle Sensor	Yes	Yes	Yes	Yes
Odor Sensor	Yes	Yes	Yes	Yes
Light Sensor	Yes	Yes	No	No
Remote Control	Yes	Yes	Yes	Yes
Deodorization	Yes	Yes	Yes	Yes
Weight	19.4 lbs.	19.4 lbs.	17 lbs	17 lbs

*Zero ozone emission with negative ion generator turns off. An amount of 0.002 ppm (parts-per-million) was recorded at low fan speed with negative ionizer turned on. That is 25 times less than the 0.05 ppm maximum ozone concentration safety standard set forth by the California Air Resource Board.

**BioGS BCRF Special Edition has same technical specification as BioGS SPA-421A.