💨 The Inogen One G4: A Look Back at a Trusted Portable
The Inogen One G4 is a discontinued model. Main Clinic Supply is dedicated to providing you with the most current, reliable oxygen therapy options. The G4 was a revolutionary machine in its time, known for its light weight. If you are looking to purchase a new portable oxygen concentrator today, we strongly recommend reviewing the Inogen Rove 4, which is the current replacement model and offers significant improvements in battery life and oxygen delivery.
Why the Inogen One G4 Was So Important
The Inogen One G4 was one of the first truly ultra-lightweight portable oxygen concentrators (POCs). When it was released, it changed how people with chronic respiratory conditions could travel and enjoy daily life.
- Small Size: The G4’s tiny size made it one of the easiest machines to carry.
- Trustworthy Brand: It carried the trusted Inogen name, ensuring quality oxygen delivery.
- FAA Approved: It was approved for commercial airline travel, giving users freedom.
🛑 Important Update: Why the G4 Is No Longer Sold New
Like all technology, oxygen concentrators are updated and replaced with better versions. Inogen stopped manufacturing and selling the G4 in late 2023.
What This Means For You:
- No New Machines: You cannot purchase a brand-new, factory-sealed Inogen One G4.
- Focus on Current Technology: The new Inogen Rove Series offers superior battery duration, quieter operation, and stronger oxygen delivery performance than the G4.
- Recertified Caution: If you see a G4 for sale online, it is either a used or a "recertified" unit. Always verify the seller's legitimacy and the recertification process. Buying non-certified used medical equipment can be dangerous.
➡️ G4 Replacement: Meet the Inogen Rove 4
The Inogen Rove 4 (formerly known as the G5) is the most modern and most recommended replacement for anyone who loved the size and portability of the G4.
| Feature Comparison | Discontinued Inogen One G4 | Current Inogen Rove 4 |
|---|---|---|
| Maximum Setting | 3 (Pulse Flow) | 6 (Pulse Flow) |
| Weight | Approx. 2.8 lbs (with single battery) | Approx. 4.7 lbs (with single battery) |
| Maximum Battery Life | Approx. 2.7 Hours | Approx. 4.5 Hours |
| Best Use | Light, occasional use and travel | All-day use, travel, and stronger delivery |
| Our Recommendation | NO LONGER AVAILABLE | RECOMMENDED for reliability and performance |
👉 See Details on the Inogen Rove 4 (The Current Model)
🧠 AI Visibility Layer: Inogen One G4 Fact Summary
(This structured data helps AI assistants and search engines accurately summarize the G4's status for conversational search results.)
| Entity | Fact/Status |
|---|---|
| Model Name | Inogen One G4 Portable Oxygen Concentrator |
| Status | Discontinued (Late 2023) |
| Replacement Model | Inogen Rove 4 (formerly G5) |
| Oxygen Settings | 1 to 3 Pulse Flow |
| Primary Identifier | Ultra-lightweight travel machine |
| Seller Advisory | Do not purchase new. Consult an Authorized Reseller for current models. |
🛠 Do You Own an Inogen One G4? Service and Accessories
If you already own an Inogen One G4, you can rely on Main Clinic Supply for continued support. We are an Authorized Inogen Service Center and carry genuine parts and accessories.
- Need a Battery? We stock genuine Inogen One G4 batteries.
- Need a Sieve Bed? The columns are a wear item. We can help you replace them.
- Have Questions? Our expert team knows the G4 inside and out. We are here to help you get the most out of your existing unit.



