Which Air Purifier is Best for You?

Compare MinusA2 and BioGS 2.0

	MinusA2 780A/N	MinusA2 700A	BioGS 2.0 625A	BioGS 2.0 550A
Room Coverage (based on 2 air changes per hour)	up to 815 sq. ft.	up to 700 sq. ft.	up to 625 sq. ft.	up to 550 sq. ft.
Dimension (inches)	20H x 21.4W x 7D	20H x 21.4W x 7D	22.2H x 16.6W x 9.8D	22.2H x 16.6W x 9.8D
Warranty	5 Years	5 Years	5 Years	5 Years
Price	SPA-780A: $599.95 SPA-780N: $619.95	$549.95	$399.95	$369.95
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 - Charcoal Filter 3 - HEPA Filter 4 - Negative Ions	1 - Pre-Filter 2 - Charcoal Filter 3 - HEPA Filter 4 - Negative Ions
Ozone Emissions	Zero*	Zero*	Negligible**	Negligible**
CADR	200 Pollen 193 Dust 180 Smoke	171 Pollen 173 Dust 166 Smoke	180 Pollen 165 Dust 154 Smoke	162 Pollen 149 Dust 136 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 - 42 CFM 2 - 66 CFM 3 - 95 CFM 4 - 137 CFM 5 - 167 CFM	1 - 42 CFM 2 - 66 CFM 3 - 78 CFM 4 - 117 CFM 5 - 147 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 - 22.8 dBA 2 - 28.6 dBA 3 - 37.2 dBA 4 - 46.7 dBA 5 - 50.4 dBA	1 - 22.8 dBA 2 - 28.6 dBA 3 - 33.5 dBA 4 - 44.3 dBA 5 - 48.6 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)	$85	$85	$53.30	$53.30
Power Consumption	7 to 61 watts (Energy Star)	7 to 47 watts (Energy Star)	5 to 39 watts (Energy Star)	5 to 29 watts (Energy Star)
Colors Available	White Black	White	White Royal	White
Stand Alone / Wall Mountable	Stand Alone / Wall Mountable	Stand Alone / Wall Mountable	Stand Alone	Stand Alone
Wireless Connectivity (iOS app required)	SPA-780N Only	No	No	No
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.	16.8 lbs.	16.8 lbs.

*Zero ozone emission with the negative ion generator turned off. An amount of 0.002 ppm (parts-per-million) was recorded on the low fan speed with the negative ion generator 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.

**An amount of 0.001 ppm (parts-per-million) was recorded. That is 50 times less than the 0.05 ppm maximum ozone concentration safety standard set forth by the California Air Resource Board.