Compare Inogen One G2 and Inogen One G3 with AirSep Focus

The AirSep Focus is a portable oxygen concentrator from CAIRE inc., which is part of Chart Industries.

This small oxygen concentrator has one pulse dose setting of 17,25 ml oxygen per pulse. The battery lasts 1,5 hour. To extend this battery runtime, an optional external battery cartridge and AirBelt are available. These have to be carried separately from the concentrator.

Return to the overview with all portable oxygen concentrators.

	Inogen One G2	Inogen One G3	AirSep Focus
Weight (including battery)	3,2 kg	2,2 kg	1 kg
Size	27 x 10 x 24 cm	22 x 8 x 18 cm	16,4 x 12 x 6 cm
Noise @ pulse dose setting 2	38 dB	39 dB	Undisclosed
Delivery technology pulse dose	Fixed Minute Volume	Fixed Minute Volume	Uniform Pulse
Max bolus size @ 20 BPM	63 ml	52,5 ml	17,25 ml
Number of pulse dose settings	6	5	1
Continuous flow	×	×	×
Sieves replaceable by user	×	✔	×
Different battery options	✔ (single or double battery)	✔ (single or double battery)	✔ (only external battery pack)
Battery runtime @ pulse dose, setting 2, standard battery	Up to 5 hours	Up to 4.5 hours	1:30 hours
Battery can be replaced by user	✔	✔	✔ (external battery pack)
Concentrator can be used and charge battery simultaneously on DC power	✔	✔	✔
Power consumption	25 - 49 Watt	19 - 40 Watt	Undisclosed
Power consumption when charging battery	75 - 90 Watt	65 - 85 Watt	Undisclosed
Integrated DC Power Supply	×	✔	×
Trigger sensitivity	-0,12 cm H2O	-0,12 cm H2O	Undisclosed
Warranty on concentrator	3 years	3 years	3 years
Warranty on sieve beds	3 years	1 year	3 years