Philips Respironics SimplyGo vs Inogen One G4 Portable Oxygen Concentrator

Philips Respironics vs Inogen

For individuals in need of medical oxygen, everyday activities can be more difficult. With the help of portable oxygen concentrators, however, patients who once relied solely on oxygen tanks can now use smaller, compact machines to provide supplemental oxygen anywhere. Both the Philips Respironics SimplyGo and the Inogen One G4 are lightweight, compact, and easy to take on-the-go options. Let’s take a closer look at the similarities and differences in this portable oxygen concentrator review. 

Philips Respironics SimplyGo vs Inogen One G4


The Philips Respironics SimplyGo was built with durability in mind. The SimplyGo has been tested against extreme temperatures and high impacts to ensure reliable therapy day after day. Meanwhile, the Inogen One G4 was designed for portability. Quiet and compact, the Inogen One G4 is intended to be a one-size-fits all for oxygen therapy needs.


The Philips Respironics SimplyGo weighs 10 lbs with a battery; the Inogen One G4 weighs only 2.8 lbs with the 8-cell battery or 3.3 lbs with the 16-cell battery. If you are looking for a lighter, more compact unit, the Inogen One G4 is the preferred portable oxygen concentrator. 


The Philips Respironics SimplyGo measures 11.5″ x 10″ x 6″. The Inogen One G4 measures only 5.9″ x 2.7″ x 7.2″ with a single battery, therefore a much smaller unit. 

Battery Life

Another important factor for a portable oxygen concentrator is the battery life. A longer-lasting battery means more freedom. The Inogen One G4 offers varied battery life based on the battery size across three pulse settings. The Philips Respironics SimplyGo offers different battery life based on pulse dose or continuous flow settings. Here’s how these two machines stack up. 

Inogen One G4 Battery Life8-Cell16-Cell
Pulse 12.6 hr5.0 hr
Pulse 22.2 hr4.5 hr
Pulse 31.3 hr2.5 hr
Philips Respironics SimplyGo Battery LifePulse DoseContinuous Flow
Flow Setting 0.5 N/A2.9 hrs
Flow Setting 13.4 hrs1.6 hrs
Flow Setting 23.0 hrs0.9 hrs
Flow Setting 32.2 hrsN/A
Flow Setting 41.7 hrsN/A
Flow Setting 51.3 hrsN/A
Flow Setting 61.3 hrsN/A

Flow Settings

Flow settings are important as they may vary depending on prescription. Most patients require between 2 to 10 liters per minute. Remember, the amount of oxygen needed may vary depending on the time of day or the engaged activity, so you want a portable oxygen concentrator that can hold up to demand.

The Philips Respironics SimplyGo can deliver between 0.5 and 2 liters per minute of oxygen on the continuous flow setting and accommodate 1-6 pulse dose settings. Meanwhile, the Inogen One G4 offers pulse settings between 1 and 3. 


Currently priced at $2295, the Inogen One G4 is a reasonably priced portable oxygen concentrator. The Philips Respironics SimplyGo is currently priced at $2095. Prices are subject to change and are often discounted with promotions and sales. Sign up for our newsletter to learn about the latest deals.

Side-by-Side Comparison of Respironics SimplyGo and Inogen One G4

While the Inogen One G4 offers a lighter, more compact unit for travel, its range of oxygen delivery doesn’t compare to the Philips Respironics SimplyGo. If you need a portable oxygen concentrator with only minimal pulse settings, then the Inogen One G4 is your preferred unit. 

For both pulse flow and continuous flow capabilities in a portable oxygen concentrator, then the Philips Respironics SimplyGo is a better choice. 

UnitPhilips Respironics SimplyGoInogen One G4
More CompactX
FAA ApprovedXX
Comparative PriceXX
More Pulse SettingsX
Battery LifeX

Both the Inogen One G4 and Philips Respironics SimplyGo portable oxygen concentrators are reliable and efficient supplemental oxygen sources and can enhance your daily life. Whether you choose the Inogen One G4 or the Philips Respironics SimplyGo is a decision based on your individual lifestyle needs. Both the Inogen One G4 and the Philips Respironics SimplyGo come with a generous warranty: 2 years for the Philips Respironics SimplyGo and 3 years for Inogen One G4.

If you need advice on which machine best fits your needs, our customer care team is here to help. Give us a call at 888.941.1688 or email us at