Inogen One G4 vs G3: Comparing Performance and Portability Features

Comparing the Inogen One G4 and G3 models is essential for those seeking reliable portable oxygen concentrators. Both machines are designed by Inogen with an eye for user freedom and mobility but offer distinct experiences based on their features. The Inogen One G4 is known for its light weight and compact size, which appeals to active users who prioritize portability and discreet usage. In contrast, the Inogen One G3, though slightly larger, offers increased battery life and a higher maximum oxygen output, catering to users who might require longer use between charges and more intensive oxygen delivery.

The Inogen One G4 and G3 are side by side, showcasing their sleek and compact designs. The G4 appears smaller and lighter, with a modern and streamlined look, while the G3 is slightly larger and bulkier in comparison

Users must consider various factors such as battery life, weight, oxygen delivery, and the specific settings available on each device. The G3, with its broader range of pulse dose settings, may accommodate a wider range of oxygen needs, while the G4’s smaller form factor suits less intensive requirements and a greater degree of movement. While the G4 is newer, both models come with Inogen’s trusted reliability and support, and the choice between them often comes down to balancing individual lifestyle needs with the functionality offered by each oxygen concentrator.

Key Takeaways

  • Inogen One G4 suits active users with its compact size, while G3 offers longer battery life.
  • G3 has a wider range of pulse dose settings, whereas G4 is more discreet and easier to carry.
  • Both models are backed by Inogen’s reliability but cater to different user requirements.

Overview of Inogen One G4 and G3

The Inogen One G4 and G3 are placed side by side on a clean, white surface. The G4 is sleek and compact, while the G3 is slightly larger with a more traditional design. Both devices are powered on and emitting a

The Inogen One G4 and G3 portable oxygen concentrators offer unique features and technological innovations designed for enhancing the quality of life for those requiring supplemental oxygen.

Key Features

  • Inogen One G4:
    • Settings: 1-3
    • Maximum Output: 630 ml/min
    • Oxygen Purity: 90%
  • Inogen One G3:
    • Settings: 1-5
    • Maximum Output: 1050 ml/min
    • Oxygen Purity: 90%

Design Innovations

  • Inogen One G4 boasts a compact and lightweight frame, making it a popular choice for those seeking mobility without extra weight.
  • Inogen One G3, while larger in comparison, offers a higher flow setting for those needing more substantial oxygen delivery during a variety of activities.

Technology Comparison

Both units feature Inogen’s Intelligent Delivery Technology, which fine-tunes oxygen delivery in accordance with the user’s current breathing pattern. This ensures efficient oxygen supplementation, whether the user is at rest or physically active. The technology within these oxygen concentrators constantly adapts to meet the user’s needs.

Portability and Design

When comparing the Inogen One G3 and G4, their portability and design stand out as features that cater to an active lifestyle. Both are designed to be portable, but they have differences in size, weight, and structural build that influence ease of transport.

Size and Weight

The Inogen One G3 and G4 models prioritize a small size and lightweight design, making them convenient for users on the go.

  • Inogen One G3:
    • Weight: 4.9 pounds
  • Inogen One G4:
    • Weight: 2.8 pounds with a single (small) battery
    • Weight: 3.3 pounds with an 8-cell (large) battery

The G4’s lighter weight gives it an edge in portability over the G3.

Structural Build

Both the G3 and G4 feature a solid structure designed to withstand the rigors of daily use. They have a single-solution design that integrates components in a compact form to balance durability with portability.

Ease of Transport

Their lightweight and compact designs are complemented by additional transportation options:

Inogen One G3:

  • Suitable for carry bags.
  • Tailored for users needing up to 1.05 liters per minute of oxygen.

Inogen One G4:

  • Even more convenient for carrying due to its lesser weight.
  • Aimed at users requiring no more than 0.63 liters per minute.

Both models support active lifestyles with their portability enhancing features, but the Inogen One G4 offers a slight advantage in terms of weight and size for ease of transport.

Battery and Power Supply

The Inogen One G3 and G4 portable oxygen concentrators have different specifications related to battery life and power supply options. These differences can significantly impact user experience, particularly for those relying on these devices for mobility and travel.

Battery Life Comparison

The Inogen One G3 offers two battery options: an 8-Cell and a 16-Cell variant. The 8-Cell battery provides up to 4 hours of battery life, whereas the larger 16-Cell battery extends usage significantly. In contrast, the Inogen One G4 is known for its lightweight design and has a smaller battery capacity. Its single battery offers approximately 3 hours of power before needing a recharge.

Model8-Cell Battery Life16-Cell Battery Life
G3Up to 4 hoursUp to 8 hours*
G4Up to 3 hoursNot available

*Estimated battery duration

Charging Options

Both models support charging via an AC DC power supply—allowing for battery charging at home or on the go in a vehicle. The Inogen One G3 takes approximately 2-4 hours for the single battery to charge, while a double battery setup may take up to 9 hours. The Inogen One G4 has a more consistent charging period, with the single battery achieving a full charge in roughly 3 hours.

Power Management

Efficient power management is crucial for users of portable oxygen concentrators. The Inogen One G3 and G4 devices have built-in power management systems that facilitate optimal power usage to extend the battery life during operation. Users can manage their device’s power settings to balance oxygen delivery needs with the battery’s duration, ensuring the device operates effectively while away from power sources.

Functionality and Operation

In comparing the Inogen One G3 and G4 models, one must consider their functionality and operation, particularly how they deliver oxygen and their respective user interfaces.

Flow Settings and Oxygen Delivery

Inogen One G3:

  • Flow Settings: Offers 5 pulse dose settings, enabling oxygen delivery from 210 ml to a maximum of 1050 ml/min.
  • Oxygen Purity Level: Maintains 90% oxygen purity across settings.

Inogen One G4:

  • Flow Settings: Provides up to 3 pulse dose settings, with a maximum oxygen delivery of 630 ml/min.
  • Oxygen Purity Level: Also sustains a 90% oxygen purity.

Neither model offers continuous flow—a crucial point for users requiring a steady stream of oxygen.

Noise Level and Usage Comfort

Both devices are designed for discreet operation and user comfort:

Inogen One G3:

  • Noise Level: Operates around 39 decibels at setting 2, comparable to a quiet conversation.

Inogen One G4:

  • Noise Level: Slightly quieter than the G3, allowing for even less obtrusive use in various settings.

The reduced noise levels contribute to user comfort during oxygen therapy, making both models suitable for use in quiet environments.

Controls and Accessibility

Operation is made straightforward via intuitive controls for both models:

Inogen One G3:

  • Controls: Equipped with push-button operation and an LCD screen that displays current settings.
  • Accessibility: Designed for ease of use with clear labeling and a user-friendly interface.

Inogen One G4:

  • Controls: Features a simple interface with a high-contrast LCD screen, enhancing readability.
  • Accessibility: A compact design combined with the controls makes for convenient operation, even on the go.

Both models prioritize ease of use in their operation, making them accessible for users regardless of technical proficiency.

Patient Lifestyle and Usage Situations

A person using Inogen One G4 while traveling, and another using Inogen One G3 while at home

Choosing between the Inogen One G3 and G4 models involves considering how a patient prefers to integrate oxygen therapy into their lifestyle. These factors particularly revolve around the device’s portability and features that support various activities.

Travel Efficiency

The Inogen One G4 is remarkably lightweight at 2.8 pounds for the small battery and 3.3 pounds with the larger one, making it an ideal companion for travelers. Its compact size and FAA approval allow for undemanded use on airplanes. On the other hand, the G3, while slightly heavier at under five pounds, still provides ample convenience for travel.

Daily Activities and Exercise

Patients with an active lifestyle may find the G4’s lighter weight advantageous for daily use and exercise, as it exerts less burden during physical activity. However, the G3 offers a higher oxygen output—up to 1.05 liters per minute—which can be beneficial for patients requiring more substantial oxygen support throughout various activities.

Overnight Use and Sleep Apnea

While both models cater to night-time use, those managing sleep apnea may need to assess if the maximum oxygen output of the G4, at approximately 0.63 liters per minute, aligns with their needs. The capacity of the G3 to deliver up to 1.05 liters per minute can be more suited for patients with higher overnight oxygen requirements. Neither device comes with a mobile app for tracking usage during sleep, emphasizing the importance of consulting with healthcare providers to ensure proper overnight oxygen levels.

Connectivity and Accessories

Multiple oxygen concentrators (Inogen One G4 and G3) with various accessories connected to power sources and tubing, highlighting their portability and connectivity

The Inogen One G3 and G4 portable oxygen concentrators offer users the possibility to enhance their oxygen therapy experience through a variety of connectivity options and supplemental accessories. These features aim to add convenience and functionality to the devices.

Inogen Connect Features

Inogen Connect is an application that provides users additional control and monitoring capabilities. The application pairs with both the G3 and G4 models via Bluetooth connectivity. Through this app, users can:

  • Check battery life and monitor usage
  • Receive maintenance reminders
  • Access various device settings and support documents

More specifically, the Inogen Connect app allows users to stay informed about their device, helping to ensure that their oxygen therapy needs are met efficiently.

Supplemental Accessories

Both the Inogen One G3 and G4 models are accompanied by a selection of supplemental accessories designed to optimize their utility. Here’s a breakdown of key accessories available:

  • Nasal Cannula: A soft, lightweight tube that delivers oxygen directly to the user’s nostrils. It is designed for comfort during prolonged use.
  • Carrying Case: A custom-designed case for each model that facilitates portability. The carrying case protects the device and offers convenience while traveling.
  • Additional Accessories:
    • External Battery Chargers: Allow for charging batteries outside of the concentrator.
    • Replacement Batteries: A range of batteries of differing capacities, providing flexibility in managing oxygen therapy on the go.

The selection of accessories enhances the usability and maintenance capabilities of Inogen One devices, catering to a variety of lifestyles and needs.

Healthcare and Prescription Requirements

A person using Inogen One G4 and G3 with prescription in a healthcare setting

When considering the Inogen One G3 or G4, patients must understand the healthcare regulations and insurance requirements. The process involves obtaining a legitimate medical prescription and navigating insurance coverage, including Medicare.

Medical Prescription Necessity

A medical prescription is imperative for acquiring an Inogen One G3 or G4 portable oxygen concentrator. A qualified healthcare professional, often a respiratory therapist, must evaluate the patient’s oxygen needs to determine the necessity. This prescription will specify the oxygen dosage and frequency, thereby ensuring that the chosen device matches the patient’s healthcare requirements.

Insurance and Medicare Coverage

Insurance coverage for an Inogen One device can vary; however, many insurance policies, including Medicare, generally cover oxygen therapy equipment:

  • Under Medicare Plan B, patients may be eligible for coverage if the following criteria are met:
    • The healthcare provider prescribes the oxygen concentrator for home use.
    • The patient has a lung condition or insufficient oxygen levels documented by tests.
    • Other therapies have been ineffective.
  • Documentation is crucial for coverage. Patients should maintain records such as:
    Document TypeDescription
    PrescriptionDetails of the oxygen therapy prescribed.
    Medical RecordsEvidence of the lung condition and necessity for oxygen therapy.
    Proof of Prior TrialsRecords showing other treatments were tried and were inadequate.

Securing insurance approval may require additional steps, and the patient’s healthcare provider can guide through these processes.

Costs and Financing

In considering the Inogen One G4 and G3, potential buyers should examine not only the initial investment but also the long-term value that each model provides. Financing options and warranties are critical aspects that can impact the overall cost.

Initial Purchase and Long-Term Value

The Inogen One G3 is marketed as the more affordable model in comparison to its successors. On the other hand, the Inogen One G4 offers robust features at a slightly higher price point. When it comes to long-term value, buyers must assess how each model’s features align with their individual oxygen therapy needs.

  • Initial Cost: The G3 is generally less expensive than the G4.
  • Long-Term Value: Buyers should evaluate battery life, portability, and oxygen output to determine which model offers the best value over time.

Warranty and Service Plans

The aspect of warranties and service plans should not be overlooked. Buyers have the option of a Lifetime Warranty with the Inogen One models, paired with a comprehensive service that includes:

  • Worry-Free Drop-Coverage: Protection against accidental damage.
  • Free Filters and Software Updates: Ensuring the device runs optimally.

Regarding financing:

  • Financing Options: Payment plans may be available to spread the cost over time.
  • Warranty and Services: Depending on the supplier, service plans might include at-home visits and technical support.

Prospective buyers are encouraged to contact sellers directly for the most current information on warranty lengths, terms of service, and financing opportunities.

Reliability and Manufacturer Support

A technician assists a customer with an Inogen One G4, while a manufacturer representative stands by, ready to offer support

When assessing Inogen’s portable oxygen concentrators, one must consider the reliability of the devices themselves as well as the support provided by the manufacturer. The Inogen One G3 and G4 are known for their build quality and consistent performance, alongside a customer service experience that aims to provide users with confidence and trust in their products.

Device Durability

Both the Inogen One G3 and G4 models are designed with durability in mind, constructed to withstand regular use while remaining compact and lightweight for mobility. The G4 is particularly noted for its small size, adding convenience without compromising the build quality. Inogen ensures that their products meet high-quality standards, which is crucial for users who depend on these devices for their respiratory needs.

Customer Service Experience

Inogen places emphasis on their customer service, providing assistance through various channels. This includes telephone support, where operators are trained to handle inquiries and resolve issues promptly. The manufacturer has a reputation for being responsive and helpful, ensuring that users have access to the necessary resources and support to effectively use their portable oxygen concentrators.

Side-by-Side Comparison and Conclusion

Two Inogen One portable oxygen concentrators, G4 and G3, displayed side by side with their features and specifications highlighted

When examining the Inogen One G3 and G4 models, consumers notice distinct differences impacting the quality of life for users requiring portable oxygen therapy. The G4 is notably lighter than the G3; with a single battery, the G4 weighs only 2.8 pounds, and 3.3 pounds with the 8-cell battery. In comparison, the G3 has a starting weight under five pounds with the standard 8-cell battery.

FeatureInogen One G3Inogen One G4
WeightUnder 5 lbs (with 8-cell)2.8 lbs (single battery)
3.3 lbs (8-cell battery)
Battery LifeLonger with standard batteryShorter compared to G3
SizeLarger than G4Smaller and more compact

In terms of battery life, the G3 offers extended usage times, making it a reliable choice for users who spend lengthy periods away from charging sources. The G4, while having shorter battery life, presents an advantage in portability due to its compact size.

Both models maintain Inogen’s commitment to high-quality oxygen delivery, ensuring users have access to efficient respiratory support. The choice between the G3 and G4 may come down to individual preferences in balance and trade-offs between extended battery life and the ease of carrying the device.

For added battery life, the Rove 6™ is mentioned as an alternative, weighing 5.8 lbs and offering extended operation. However, when narrowing the comparison to G3 and G4, the user’s lifestyle and specific needs play central roles in determining the most suitable portable oxygen concentrator.

Frequently Asked Questions

Two portable oxygen concentrators side by side, with "Inogen One G4" and "Inogen One G3" labels. Clear and simple comparison

In this section, we address common inquiries regarding the Inogen One G3 and G4, focusing on their differences in battery life, size, weight, flow settings, accessory compatibility, improvements, and their capacity for continuous oxygen delivery.

What are the key differences in battery life between the Inogen One G3 and G4?

The Inogen One G3 and G4 units have varying battery lives due to their different sizes and capabilities. The G3, generally offering up to 4.7 hours with a single battery and up to 10 hours with a double battery, outlasts the G4, which provides about 2.4 hours with a single battery and up to 5 hours with a double battery.

How do the sizes and weights of the Inogen One G3 and G4 compare?

The Inogen One G3 is slightly heavier and larger than the G4. While both models are designed to be portable, the G3 weighs just under five pounds with a standard battery, and the G4 is lighter, weighing only 2.8 pounds with a single battery and 3.3 pounds with a larger battery.

Are there any differences in the flow settings between the Inogen One G3 and G4?

The Inogen One G3 provides up to five pulse dose settings, whereas the G4 offers three pulse dose settings. The G3 delivers a maximum of 1050 ml/min of oxygen, compared to the G4 which offers up to 630 ml/min.

Which accessories are compatible with both the Inogen One G3 and G4?

Both the Inogen One G3 and G4 models use a range of compatible accessories, including external batteries, chargers, and carry cases. However, the specific batteries and parts for each model vary due to differences in size and power requirements.

What improvements does the Inogen One G4 have over the G3 model?

Having a lighter weight and smaller size, the Inogen One G4 is an improvement over the G3 in terms of portability. Additionally, the G4 model comes with technological advancements that are designed to provide a more user-friendly experience.

Can the Inogen One G3 and G4 both be used for 24/7 oxygen delivery?

Neither the Inogen One G3 nor G4 is designed for continuous 24/7 oxygen delivery in the traditional sense. They are intended for daytime mobility and occasional nocturnal use if the user breathes through their nose. It is crucial for individuals requiring round-the-clock oxygen to consult with their healthcare providers for the most suitable options.

The team at are experts when it comes to oxygen concentrators. We are dedicated to providing as much help as we can for people who are undergoing oxygen therapy and need help with oxygen concentrators. We research and immerse ourselves in the industry and are assisted by our team of medical experts.

We will be happy to hear your thoughts

      Leave a reply

      Oxygen Concentrator Advice
      Enable registration in settings - general
      Compare items
      • Total (0)