The Most Interesting Facts About Portable Oxygen Concentrators (Featuring Inogen G5 & DeVilbiss iGo2)

What’s It Worth to You to Get Your Freedom Back?

Imagine missing out on birthdays, weddings, or even just a walk outside—because your oxygen supply is tethered to a heavy tank, your mobility is limited, and your world feels smaller than it used to be.

For many people on oxygen therapy, that’s daily life.

Now imagine the alternative: stepping out your front door with confidence, boarding a plane to see family, or simply sitting at your favorite café without worrying if you’ll run out of oxygen. That’s the power of a portable oxygen concentrator. It’s not just a medical device it’s a second chance at independence.

There is a way back to freedom, and we have the solution.

Portable oxygen concentrators like the Inogen One G5 and the DeVilbiss iGo2 are redefining how oxygen therapy is delivered quietly, efficiently, and on your schedule. Whether you're considering renting for travel or investing in a long-term solution, understanding these devices is the first step to taking your life back.

In this article, we break down the most interesting and essential facts about the Inogen G5 and the iGo2—two of the most trusted portable oxygen concentrators available today.

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1. Travel-Friendly Weight That Sets You Free

Inogen One G5: Weighs approximately 2.1 kg with a single battery and 2.6 kg with a double battery. That’s lighter than most small handbags and easy to carry across the shoulder or in a small backpack.

DeVilbiss iGo2: Weighs about 2.3 kg, still easily portable and designed with a tough outer shell for users who need durability for active or travel-heavy lifestyles.

Both devices are FAA-approved, meaning you can use them safely and legally during commercial flights.

2. Whisper-Quiet Operation for Seamless Use

Inogen One G5: Operates at approximately 38 decibels on setting 2. That’s quieter than a home refrigerator and similar to the sound of a soft indoor conversation.

DeVilbiss iGo2: Slightly louder, averaging around 40 decibels, which is about the level of a quiet room or a gentle rainfall. Noise may vary slightly based on breath rate due to its auto-adjusting feature.

Both units allow users to read, sleep, watch television, or engage in conversation without disruption—at home or in public.

3. Adaptive Oxygen Delivery That Meets Your Needs

Inogen One G5: Offers six pulse dose settings, one of the highest among portable models. This makes it suitable for a wide range of oxygen prescriptions, from low to moderately high flow rates. Oxygen delivery is triggered by the user’s breath, ensuring efficient, on-demand supply.

DeVilbiss iGo2: Features SmartDose™ Auto-Adjusting Technology, which automatically modifies oxygen output in real time based on your breathing rate. Ideal for users whose oxygen demand changes with activity.

Both machines are pulse dose units, meaning they deliver oxygen only when you inhale—conserving battery and increasing portability.

4. Long-Lasting Battery Life for Full-Day Use

Inogen One G5:

• With double battery: Up to 13 hours on setting 1, or approximately 9–10 hours on setting 2

• With single battery: Around 4.5 to 6.5 hours, depending on breath rate and setting

• Batteries are rechargeable via wall (AC) or vehicle (DC) power

DeVilbiss iGo2:

• Offers up to 5 hours of battery life on setting 2

• Rechargeable through AC and DC power sources

• Note: Higher settings or faster breathing rates will reduce run time

For users on the go, both systems support swappable batteries and external battery chargers, making them practical for long days out, road trips, or flights.

5. What It’s Really Like to Use a Portable Oxygen Concentrator

Owning or renting a portable oxygen concentrator isn’t just about specifications—it’s about how it changes your day-to-day life. Patients who make the transition often report:

• Greater independence to travel, socialize, and return to favorite activities

• Improved confidence in public, with less attention drawn to their oxygen use

• Better sleep and comfort, especially with quieter devices

• Freedom from delivery schedules and cylinder swaps

No more waiting for deliveries or worrying about running out of oxygen. Just reliable, medical-grade support—delivered wherever you are.

Ready to Reclaim Your Freedom?

At Respocare, we offer flexible rental and purchase options for the Inogen One G5 and DeVilbiss iGo2, backed by expert support and technical guidance. Whether you’re traveling for a few weeks or managing long-term oxygen needs, we’re here to help you choose the best solution for your lifestyle.

Contact our team today to learn more or request a demo. Let us help you breathe easier—at home, on the road, or wherever life takes you.

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Portable Oxygen Concentrator Comparison Table