Respironics SimplyGo vs. Inogen One G4 Concentrator Comparison

When it comes to portable oxygen concentrators, you first need to choose one that will meet your supplemental oxygen therapy requirements. However, there’s no need to sacrifice great features and convenience to get the oxygen delivery you need. Two great options are the SimplyGo by Respironics and the Inogen One G4 because both units have amazing features and benefits. The information below can help you decide which is right for you.

Respironics' SimplyGo is a quiet powerhouse in a compact, portable package. This device can deliver up to 2 liters per minute of supplemental oxygen at a continuous flow, making it a great choice for those with higher oxygen requirements. It’s versatile too – it offers 6 different pulse dose settings. Measuring 11.5 inches in its largest dimension and weighing around 10 pounds, the SimplyGo still lives up to its name. It even includes a wheeled cart for easier portability.

The battery life averages 3 hours, enough to run errands or see a movie on a single charge. The FAA has also approved the unit for in-flight use. It’s unobtrusive as well - the average noise level is an extremely quiet 43 decibels. Respironics stands behind the SimplyGo with an included 3-year manufacturer’s warranty covering the unit.

Educate yourself with our Free Oxygen Therapy Guide

Compared to the SimplyGo, the Inogen One G4 is merely tiny. It’s less than 3 pounds and under 8 inches in all dimensions. Still, this small device provides pulse dose oxygen at a choice of 3 different setting. This unit also features Inogen’s proprietary technology that allows for automatic adjustment of the oxygen dose to best match your breathing rate, whether you’re exercising or asleep. The battery life is a very generous 4.5 hours when fully charged. Like the SimplyGo, the G4 also comes with a 3-year manufacturer’s warranty. It operates at around 40 decibels and is FAA approved for passenger flight use.

If you have higher supplemental oxygen needs and want a reliable, portable, and versatile oxygen concentrator unit, the SimplyGo is an excellent choice. However, if your oxygen requirements are lower and you’re looking for the ultimate in compact portability, then the Inogen One G4 is the device for you.

Side-by-Side Unit Comparison

11.5 inches Wide x 6 inches Deep x 10 inches High
2.68 inches Wide x 5.91 inches Deep x 7.2 inches High with single battery

10 pounds with battery
2.8 pounds with single battery

Oxygen Settings
Continuous Flow: 0.5 to 2 liters per minute
Pulse Dose: 1 to 6 setting
Continuous Flow: Not supported
Pulse Dose: 1 to 3 setting

Battery Duration
Pulse: 3 hours (Setting of 2)
Continuous: 1.6 hours
Setting of 1: 2 hours 40 minutes
Setting of 2: 2 hours 15 minutes
Setting of 3: 1 hours 20 minutes

Battery Charging Time
About 2 to 3 hours from 0% charge to 100%.
Approximately 3 hours for single battery

Noise Level
Around 43 decibels at a setting of 2
40 decibels at a setting of 3

Maximum Oxygen Output
2000 ml/min
630 ml/min

FAA Approved

3 Year Warranty on Unit, 90 Day Warranty on Accessories
3 Year Warranty on Unit, 90 Day Warranty on Accessories

Have more questions about for these units?

About Scott Ridl: Scott joined American Medical Sales and Rentals in 2008 as a Web Manager and Content Writer. He is a writer and designer. He is extensively trained on oxygen therapy products from leading manufacturers such as Inogen, Respironics, Chart, Invacare, ResMed and more. Scott works closely with respiratory therapists and oxygen specialists to educate the community about oxygen therapy products, COPD, asthma and lung diseases. He writes weekly columns and is passionate about educating the community on oxygen therapy and respiratory issues.

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