Inogen Model History and Comparison: Rove Series, Voxi 5, G Series, and Home Oxygen
Inogen has created some of the most recognizable portable and home oxygen concentrators in the world. Over the years, the lineup has expanded and evolved, with some models now discontinued and others continuing as part of Inogen’s newest generation. This guide gives seniors and caregivers a clear view of the full Inogen timeline, including the newest release, the Inogen Voxi 5.
Why Understanding Inogen Model History Helps Seniors
Knowing which Inogen models are current and which are discontinued protects you from buying outdated, unsupported, or unsafe equipment online. Many discontinued models still appear on auction sites and marketplaces, and some listings are misleading. This guide helps you choose safe, supported Inogen equipment.
Inogen Model History Timeline
Here is the full history of Inogen oxygen concentrators, including discontinued and current models:
- Inogen One | Released 2004 | Discontinued around 2007 | Pulse dose, settings 1 to 5
- Inogen One G1 | Released 2006 | Discontinued around 2009 | Pulse dose, settings 1 to 5
- Inogen One G2 | Released 2009 | Discontinued around 2015 | Pulse dose, settings 1 to 6
- Inogen One G3 | Released 2012 | Discontinued 2023 | Pulse dose, settings 1 to 4
- Inogen One G4 | Released 2016 | Discontinued 2024 | Pulse dose, settings 1 to 3
- Inogen One G5 | Released 2019 | Discontinued 2025 | Pulse dose, settings 1 to 6
- Inogen Rove 4 | Released 2024 | Active | Pulse dose, settings 1 to 4
- Inogen Rove 6 | Released 2023 | Active | Pulse dose, settings 1 to 6
- Inogen Voxi 5 | Released 2025 | Active | Continuous flow up to 5 liters per minute | Newest home oxygen concentrator
- Inogen At Home GS100 | Released around 2014 | Active | Continuous flow, 1 to 5 liters per minute
The G Series units were extremely popular, but every portable model in that lineup is now discontinued. The Rove series and Voxi 5 represent Inogen’s newest generation.
Current Inogen Models
These are Inogen’s active concentrators available today:
- Inogen Rove 6 | Pulse dose, settings 1 to 6 | Designed for seniors who need higher daytime settings, stronger output, and long battery life.
- Inogen Rove 4 | Pulse dose, settings 1 to 4 | Lightweight and comfortable for everyday mobility.
- Inogen Voxi 5 | Continuous flow up to 5 liters per minute | Inogen’s newest home concentrator. Compact, quiet at common flow settings, and ideal for bedside or living room use.
- Inogen At Home GS100 | Continuous flow, 1 to 5 liters per minute | A proven, durable home concentrator with a long history of reliable performance.
These models offer the most current technology and the broadest support options.
Inogen Voxi 5 Overview
The Inogen Voxi is the latest addition to Inogen’s lineup. It is a compact, powerful, and quiet stationary concentrator designed for home use. Seniors appreciate the Voxi because it delivers consistent oxygen therapy without taking up much room and is easy to manage.
The Voxi offers:
- Continuous flow oxygen up to 5 liters per minute
- Quiet operation at typical daily settings
- A small footprint that fits easily beside a bed or in a living space
- Simple, front-facing controls that are senior friendly
- Reliable daily operation for long term oxygen needs
The Voxi 5 joins the Rove series as part of Inogen’s most modern generation of oxygen equipment.
Discontinued Inogen Models
The following models are no longer in production:
- Inogen One (original)
- Inogen One G1
- Inogen One G2
- Inogen One G3
- Inogen One G4
- Inogen One G5
These units may still appear online, but seniors should be cautious. Many listings show heavy use, unknown service history, expired batteries, or altered internal components.
Recertified vs Used vs Counterfeit Models
Not all pre owned Inogen units are equal. Here is what the terms mean:
- Recertified: Professionally serviced, tested, and restored to a known standard by trained technicians. These units include warranty and verified performance.
- Used: Sold as is with unknown hours, condition, or internal wear. Often no warranty.
- Counterfeit or altered: Units that are not genuine Inogen products or have been modified with non approved internal parts.
When appropriate, recertified units can be safe. Random used or counterfeit machines should be avoided.
Why Older Inogen Models Appear Online
Many sellers list G Series units even though they are discontinued. This often happens on auction sites or marketplaces where medical listings are not policed.
Risks include:
- High compressor hours
- No support or warranty
- Unreliable batteries
- Outdated software
- Improper service history
For seniors, using a discontinued model without support can be unsafe.
Inogen Model Comparison
This simple comparison helps seniors understand the differences among the active Inogen units:
- Rove 4: Pulse dose, settings 1 to 4. Small and lightweight for everyday outings.
- Rove 6: Pulse dose, settings 1 to 6. Best for seniors who need stronger output or more battery life.
- Voxi 5: Continuous flow up to 5 liters per minute. A quiet, compact home concentrator for reliable daily oxygen.
- At Home GS100: Continuous flow, 1 to 5 liters per minute. A durable home concentrator with a long service history.
Many seniors choose a combination such as the Voxi 5 for home use and the Rove 6 for errands, appointments, and travel.
Medicare and Inogen Models
Most Inogen units, including the Rove series and Voxi 5, are not covered under standard Medicare oxygen rules. Medicare suppliers may occasionally offer older models that were returned by previous patients, but these are not new and often come with slower service and waitlists.
Why Work With an Independent, Factory-Certified Oxygen Provider
Independent, factory-certified providers offer genuine equipment, accurate model guidance, and reliable warranty and service support. Main Clinic Supply sells and services Inogen products while maintaining full independence from manufacturer reseller agreements, allowing recommendations to stay focused on each patient’s needs.
Our oxygen specialists can help you compare Rove 4, Rove 6, Voxi 5, and GS100 models based on your prescription, activity level, and home use needs.
Need Help Choosing the Right Inogen Model?
If you are unsure which Inogen model fits your lifestyle and oxygen prescription, we can help you compare your options in simple terms. You deserve equipment that keeps you safe, mobile, and confident at home and on the go.
Call us anytime for friendly guidance.