Inogen One® G4® Portable Oxygen Concentrator, Standard Battery
- Regular price
- $2,744.00
- Sale price
- $2,744.00
- Regular price
-
- Unit price
- per
Inogen stopped manufacturing the G4 in late 2023. New machines are no longer available. We recommend the Inogen Rove 4 as the current replacement model — it offers significant improvements in battery life and oxygen delivery.
The Inogen One G4 was a revolutionary machine in its time, known for its light weight. Main Clinic Supply is dedicated to providing you with the most current, reliable oxygen therapy options — if you're looking to purchase a new portable oxygen concentrator today, we strongly recommend reviewing the Inogen Rove 4, the G4's direct replacement.
Why the Inogen One G4 was so important
The Inogen One G4 was one of the first truly ultra-lightweight portable oxygen concentrators. When it was released, it changed how people with chronic respiratory conditions could travel and enjoy daily life.
- Small size: The G4's compact size made it one of the easiest machines to carry.
- Trustworthy brand: Carried the trusted Inogen name, ensuring quality oxygen delivery.
- FAA approved: Approved for commercial airline travel, giving users freedom on the move.
Why the G4 is no longer sold new
Like all medical 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 can no longer 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 than the G4.
- Recertified caution: If you see a G4 for sale online, it is either used or "recertified." Always verify the seller's legitimacy and the recertification process — buying non-certified used medical equipment can be dangerous.
G4 vs. Rove 4: comparison
The Inogen Rove 4 (replacing the Inogen G4) is the most modern and most recommended successor for anyone who loved the size and portability of the G4.
| Feature | 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 (current model)
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. Our factory-trained technicians service and repair Inogen units and provide compatible, high-quality parts and accessories designed to keep your machine running smoothly.
- 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're here to help you get the most out of your existing unit.
Shop genuine Inogen G4 accessories
Have questions about the Rove 4 as a replacement, or about service for your existing G4? Call 1-800-775-0942 and we'll help you find the right path forward.
Fax your oxygen prescription to 1-800-819-7179, or email rx@mainclinicsupply.com.
We are also happy to obtain the prescription on your behalf after you place your order.
About Main Clinic Supply
We're based in Rochester, Minnesota — home of the world-famous Mayo Clinic. We deliver free to all Mayo Clinic hospitals and local hotels. With FedEx's strong presence in Rochester, our family-owned business is able to ship late into the evening.
Inspired by Mayo Clinic's values, we prioritize helping people over making profits — embodying Dr. Mayo's 1910 mission statement: "The needs of the patient come first."