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A small, lightweight device that provides oxygen for people with respiratory conditions. It has a carry handle and a control panel with buttons and a display screen.

Inogen One G4 4 Cell Portable Oxygen Concentrator | New

$2,525.00

We have 3 in stock.
Shipping calculated at checkout.

Inogen One G4 4 Cell Portable Oxygen Concentrator | New

The Inogen One G4 4 Cell system is a compact, lightweight portable oxygen concentrator designed for customers who prioritize portability, simple operation, and travel-friendly oxygen support. The G4 is one of Inogen's smallest portable concentrators and is intended for pulse dose oxygen use.

Prescription required. Oxygen concentrators are prescription devices when used for medical oxygen. Please provide a valid prescription before shipment when this equipment is being purchased for prescribed oxygen use. Customers should follow their licensed medical provider's instructions for oxygen use, flow settings, and treatment needs.

Best For

  • Customers who want one of the smallest Inogen portable concentrators
  • Travel and daily mobility
  • Pulse dose oxygen support
  • Customers who prioritize light weight over maximum battery runtime

Important Oxygen Delivery Note

The Inogen One G4 is a pulse dose portable oxygen concentrator. Pulse dose settings are not the same as continuous LPM flow. If you have been prescribed continuous flow oxygen, or if you are unsure whether pulse dose is appropriate, confirm your equipment needs with your licensed medical provider before purchase.

Key Features

  • Pulse dose oxygen delivery
  • Flow settings 1 through 3
  • Very compact portable design
  • 4 cell battery system
  • FAA approved for air travel
  • AC and DC power options for home and vehicle use
  • New equipment

Technical Specifications

Model Inogen One G4
Condition New
Oxygen Delivery Pulse dose
Flow Settings Settings 1 through 3
Battery 4 cell battery system
Typical Weight Approximately 2.8 lb with standard battery
FAA Approved Yes, for air travel
Power Options AC power supply and DC vehicle power compatibility
Use Type Portable oxygen concentrator for mobility and travel

What's Included

  • Inogen One G4 portable oxygen concentrator
  • 4 cell battery
  • AC power supply
  • DC power cable
  • Carry bag or carrying accessory if included with current package

How the Inogen G4 Compares

The Inogen G4 is smaller and lighter than the Inogen G5, but it offers lower pulse dose settings. Customers who want the smallest Inogen option may prefer the G4. Customers who need higher pulse dose settings or longer battery options may prefer the Inogen G5.

Not Recommended For

  • Glassblowing or lampworking oxygen supply
  • Hyperbaric chamber oxygen supply
  • Applications requiring continuous oxygen flow

Why Buy From Bradshaw Oxygen

  • Expert oxygen equipment guidance before and after purchase
  • Nationwide shipping
  • HSA and FSA payments accepted when eligible
  • Support from a company that specializes in oxygen concentrators

Frequently Asked Questions

Is the Inogen G4 continuous flow?
No. The Inogen One G4 is a pulse dose portable oxygen concentrator.

Can I fly with the Inogen G4?
Yes. The Inogen One G4 is FAA approved for air travel. Always check airline requirements before traveling.

What is the benefit of the 4 cell battery?
The 4 cell battery helps keep the unit as lightweight as possible. Customers wanting longer runtime may prefer the 8 cell G4 or an Inogen G5 option.

Can I use this for glassblowing or a hyperbaric chamber?
No. Portable concentrators like the Inogen G4 are not intended for lampworking, glassblowing, or hyperbaric chamber oxygen supply.

Do I need a prescription?
Yes, when this equipment is being purchased for prescribed medical oxygen use. Customers should follow their licensed medical provider's instructions.

Warranty Disclaimer

Warranty coverage may vary by product condition, manufacturer policy, and Bradshaw Oxygen support terms. Please review the warranty information provided with your order or contact Bradshaw Oxygen before purchase if you need confirmation of current warranty coverage.

Prescription Disclaimer

Oxygen concentrators are medical devices when used for oxygen therapy. Bradshaw Oxygen does not diagnose, prescribe, or determine oxygen settings. Customers using oxygen for medical purposes should follow their licensed provider's prescription and instructions.