Inogen One G4 vs G5: Comparing Portable Oxygen Concentrators

The Inogen One G4 and G5 are portable oxygen concentrators that significantly improve the quality of life for individuals requiring oxygen therapy. Each device is designed to be lightweight, compact, and easy to carry, making it convenient for users to maintain an active lifestyle. The Inogen One G4, known for its small size and portability, caters to those who prioritize a lightweight device for their oxygen needs. On the other hand, the Inogen One G5, being a tad heavier and larger, brings enhanced features like a higher flow setting and longer battery life, appealing to users who require more extensive oxygen support.

The Inogen One G4 and G5 are side by side, showcasing their sleek and compact designs. The G4 is slightly smaller, while the G5 features a more modern and streamlined appearance

When comparing these concentrators, there are several factors to consider, including technical specifications like flow settings, weight, dimensions, and battery life; practical considerations such as the ease of use and noise level; and the extent of each machine’s capacity to meet specific health and treatment requirements. With a comprehensive support system, including a lifetime warranty and worry-free drop-coverage for the latest models, Inogen remains a steadfast provider for customers, ensuring updates and after-sales service that contribute to a worry-free experience. The choice between the Inogen One G4 and G5 ultimately rests on the individual’s personal needs, lifestyle, and the specific recommendations of healthcare professionals.

Key Takeaways

  • The Inogen One G4 is suited for those valuing portability, while the G5 caters to users needing higher oxygen flow and longer battery life.
  • Technical specifications, practicality, and health considerations are key in choosing the right Inogen model.
  • Inogen provides extensive customer support, including warranties and service for its portable oxygen concentrators.

Comparing Inogen One G4 and G5

The Inogen One G4 and G5 are side by side on a clean, white surface. Both devices are turned on, with their sleek, compact designs clearly visible

In this section, we examine Inogen’s portable oxygen concentrators, the One G4 and One G5, focusing on their design, features, and performance in delivering oxygen therapy.

Overview of Inogen One G4 and G5

The Inogen One G4 and G5 are portable oxygen concentrators designed for patients requiring oxygen therapy. Both models are known for their lightweight, portability, and advanced oxygen delivery technologies.

Key Features and Differences

Size and Weight:

  • Inogen One G4: Compact and lightweight at approximately 2.8 pounds.
  • Inogen One G5: Slightly larger and heavier than the G4, it weighs around 4.7 pounds.

Battery Life:

  • G4: Up to 2.7 hours with a single battery and up to 5.0 hours with a double battery.
  • G5: Longer battery life, with up to 6.5 hours on a single battery and up to 13 hours with a double battery.

Flow Settings:

  • G4: Offers three pulse flow settings, catering to less severe oxygen needs.
  • G5: Provides six pulse flow settings, supporting a broader range of oxygen therapy requirements.

Design and Portability

Both the Inogen One G4 and G5 are designed with travel in mind, being FAA-approved for airline travel. The G4’s smaller size makes it ideal for highly active users. The G5, while larger, still maintains a high level of portability and includes a user-friendly interface with a larger LCD screen.

Oxygen Delivery and Performance

  • Pulse Dose Technology: Both use pulse dose delivery to supply oxygen—a method that conserves oxygen by delivering air when the user inhales.
  • Maximum Oxygen Output: The G5 surpasses the G4 with a higher maximum oxygen output, suitable for those with greater oxygen needs.
  • Continuous Flow: Neither the G4 nor the G5 offers continuous flow; both operate on pulse dose settings.

These units do not deliver oxygen in liters per minute as a continuous flow system would but provide adequate oxygen for those prescribed pulse dose delivery.

Technical Specifications

The Inogen One G4 and G5 are placed side by side, with clear labels and specifications visible. The G4 is smaller and lighter, while the G5 has a larger display and longer battery life

In comparing the Inogen One G4 and G5 portable oxygen concentrators, it’s crucial to examine their technical specifications, as these can significantly impact user experience and suitability for individual needs.

Battery Life and Charging

The Inogen One G4 offers a battery duration of up to 2.6 hours with a single battery and up to 5 hours with a double battery accessory. On the other hand, the Inogen One G5 excels with a longer battery life, providing up to 6.5 hours on a single battery and a robust 13 hours with its double battery option.

  • Single battery:
    • G4: Up to 2.6 hours
    • G5: Up to 6.5 hours
  • Double battery:
    • G4: Up to 5 hours
    • G5: Up to 13 hours

The extended battery life of the G5 system makes it a more versatile choice for users requiring extended use without access to charging points.

Noise Level Comparison

Both systems are designed to operate discreetly. The Inogen One G4 has a noise level that enables users to engage in everyday activities without significant disturbance. The Inogen One G5, while providing higher output, maintains a comparably low noise level, making both devices suitable for use in quiet environments.

Dimensions and Weight

The Inogen One G4 is notably compact and lightweight, at 7.2 inches in height, 5.91 inches in length, and 2.68 inches in width, and it weighs a mere 2.8 pounds with the standard battery. This makes it easy to handle and carry around.
The Inogen One G5 is slightly larger, with dimensions of 8.15 inches in height, 7.19 inches in length, and 3.26 inches in width.
The G4 offers ease of portability due to its reduced size and weight; however, the G5, while larger, provides longer battery life and higher oxygen output.

  • Inogen One G4 dimensions:
    • Height: 7.2″
    • Length: 5.91″
    • Width: 2.68″
  • Inogen One G5 dimensions:
    • Height: 8.15″
    • Length: 7.19″
    • Width: 3.26″

Oxygen Output Specifications

The Inogen One G4 is equipped with a three-setting pulse dose system, capable of supplying oxygen with a flow rate that adjusts to the user’s breathing pattern. In contrast, the Inogen One G5 supports up to six flow settings, offering greater flexibility in managing oxygen therapy needs.

  • Flow rate and oxygen output specifications:
    • G4: 3 settings, pulse dose
    • G5: Up to 6 settings, pulse dose

Moreover, both the G4 and G5 systems maintain a consistent oxygen concentration, ensuring reliable oxygen therapy for users. The G5’s enhanced flow settings allow for more precise oxygen delivery adjustments, catering to a broader range of oxygen requirements.

Practical Considerations

A table with Inogen One G4 and G5 units side by side, displaying their respective dimensions, weight, and battery life

When choosing between the Inogen One G4 and the Inogen One G5, individuals must consider factors that affect daily use and lifestyle. These include the device’s simplicity, longevity, suitability for travel, and the available customization options through accessories.

Ease of Use

The Inogen One G4 and G5 both feature Intelligent Delivery Technology, ensuring that oxygen is efficiently delivered in a manner that supports an active lifestyle. However, they have different flow settings; the G4 offers up to three settings, while the G5 provides up to six settings. This may translate to more precise oxygen delivery customization for the user with the G5.

Maintenance and Durability

Both models require similar maintenance with periodic filter changes and sieve bed replacements as needed. However, the G5 is relatively newer and may offer enhanced durability due to advancements in design. They come with a warranty, which varies depending on the provider but is generally around three years. Users should confirm the warranty specifics at the time of purchase.

Travel and Mobility

For individuals who value a small footprint and lightweight options, the G4 weighs approximately 2.8 pounds, making it easier to carry. The G5 weighs more at around 4.7 pounds but compensates with a longer battery life. Both are FAA approved, making them suitable for air travel. Travelers will need to consider whether the weight or the battery life is more important for their travel needs.

Accessories and Customization

Accessories can enhance the portability and usability of the oxygen concentrators. Both the G4 and G5 have an array of choices including a carry bag for convenient transportation. Customization options like extra batteries are available to cater to an active lifestyle. The G5’s longer battery life can be extended even further with a double battery option, offering users extended independence without the need for frequent recharging.

Health and Treatment

A patient uses Inogen One G4 and G5 for oxygen therapy in a modern medical setting with advanced equipment and comfortable surroundings

In choosing between the Inogen One G4 and G5 for health and treatment, patients and healthcare providers prioritize the suitability for specific conditions, physician recommendations, and the potential impact on quality of life.

Suitable Conditions for Use

The Inogen One G4 and G5 are both portable oxygen concentrators designed to provide supplemental oxygen to individuals with respiratory conditions such as chronic obstructive pulmonary disease (COPD) and asthma. They are prescribed by doctors for patients requiring oxygen therapy to maintain adequate oxygen levels in their bloodstream.

  • Inogen One G4 is more suited for patients with relatively active lifestyles who require a lightweight solution, as it weighs approximately 1.9 pounds less than the G5 model.
  • Inogen One G5, on the other hand, supports longer battery life, which can be critical for patients who spend a significant amount of time away from charging sources or travel frequently.

Doctor’s Perspective on Inogen One G4 vs G5

From a medical standpoint, doctors assess the patient’s oxygen needs, weighing factors such as the severity of their condition, their mobility requirements, and their daily routine before prescribing a specific model.

  • Inogen One G4 offers up to 2.6 hours of oxygen with a single battery and up to 5 hours with a double battery.
  • Inogen One G5 delivers up to 6.5 hours with a single battery and up to 13 hours with a double battery, making it preferable for patients requiring more extended periods of oxygen use.

Improving Quality of Life

The primary goal of oxygen therapy using devices like Inogen One G4 and G5 is to improve the patient’s quality of life by ensuring they can maintain their independence and lifestyle.

  • Inogen One G4 provides a balance of mobility and functionality, making it especially appealing for patients who wish to maintain an active lifestyle.
  • Inogen One G5, with its extended battery life and higher oxygen flow settings, can contribute to an enhanced sense of independence for patients, as they can be away from home for longer periods without the need for constant device management or frequent battery changes.

Purchase and Support

A customer comparing Inogen One G4 and G5, with a sales representative offering support

When considering an Inogen One G4 or G5 portable oxygen concentrator (POC), potential buyers must pay attention to aspects of warranty, customer support, as well as financing options and where the products can be purchased.

Warranty and Customer Service

The Inogen One G4 and G5 come with a limited warranty provided by the manufacturer. Customers are assured of receiving a period of coverage for their POCs, which typically addresses any manufacturing defects. It is advisable for users to register their product through the Inogen Connect App to keep track of warranty status. Comprehensive customer service support is readily available to assist with inquiries about the POCs, warranty details, and technical assistance.

Financing and Insurance

Financing options for the Inogen One G4 and G5 may be available through the manufacturer or resellers. Customers should inquire about payment plans that can ease the burden of the upfront cost. Additionally, those with Medicare or private insurance may be eligible for reimbursement or coverage under durable medical equipment (DME) for POCs. This depends on the policy they hold and the stipulations it carries regarding oxygen therapy devices.

Retailers and Availability

The Inogen One G4 and G5 can be purchased from accredited retailers, including the Oxygen Concentrator Store, as well as directly through the manufacturer. The availability of the G4 and G5 models varies, with both being widely accessible through major medical supply outlets and online. Buyers should verify the credibility of the retailer to ensure they are purchasing a genuine Inogen product.

Availability may sometimes be influenced by stock levels at retailers, so customers should check for the most current information on product availability. It is important to consult authorized dealers who can provide valid warranties and reliable after-purchase support.

Frequently Asked Questions

A side-by-side comparison of Inogen One G4 and G5 with key features highlighted

In addressing some common inquiries, this section succinctly differentiates between the Inogen One G4 and G5 portable oxygen concentrators in terms of battery life, oxygen flow rates, weight, noise levels, air travel approval, and dimensions.

What are the differences in battery life between the Inogen One G4 and G5?

The Inogen One G4 offers up to 2.6 hours with a single battery and up to 5 hours with a double battery. In contrast, the Inogen One G5 provides a longer battery life of up to 6.5 hours with its single battery and up to 13 hours with the double battery.

Can the Inogen One G5 deliver higher oxygen flow rates compared to the G4 model?

Yes, the Inogen One G5 is capable of delivering higher oxygen flow rates than the G4 model. This makes it suitable for individuals who require more substantial oxygen support.

Is there a significant weight difference between the Inogen One G4 and G5 portable oxygen concentrators?

The Inogen One G4 is one of the lightest portable concentrators available, weighing significantly less than the G5. This could be a critical factor for users for whom portability is a priority.

How does the noise level of the Inogen One G4 compare to that of the G5 when operating?

Both models are designed with noise reduction in mind for user comfort. However, specific decibels for the G4 and G5 may vary, with neither model being notably disruptive during operation.

Are the Inogen One G4 and G5 both approved for use during air travel?

The Inogen One G3, G4, and G5 models are all FAA-approved for use during flights, ensuring that users can travel with ease.

What are the differences in the dimension sizes of Inogen One G4 and G5 units?

The G4 measures 7.2″ H x 5.91″ L x 2.68″ W, whereas the G5 has slightly larger dimensions of 8.15″ H x 7.19″ L x 3.26″ W. The minor differences in size may influence a user’s choice depending on their need for compactness.

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.

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