DeVilbiss iGo2 Vs. Freestyle Comfort Portable Oxygen Concentrator

The DeVilbiss iGo2 and the Caire Freestyle Comfort are both portable oxygen concentrators designed for use while on the go. These units are both very reliable and have great features, including long battery life, a lightweight design, and more. Let’s review more about these portable oxygen concentrators.

Design Comparison 

Caire FreeStyle Comfort Portable Oxygen ConcentratorCAIRE Freestyle Comfort Portable Oxygen Concentrator

The Caire FreeStyle Comfort™ Portable Oxygen Concentrator is an ergonomically-designed portable oxygen concentrator that rests perfectly against the patient’s body’s natural curves, making it highly comfortable to use. The compact design makes it easy to pack in any suitcase or tuck into an overnight bag. The unit weighs only 6lbs when equipped with its batteries. Additionally, to make travel even easier, the Caire Freestyle Comfort comes with a shoulder strap and carrying bag to ensure your device is secure and protected.

Drive Medical iGO2 Portable Oxygen Concentrator DeVilbiss iGo2 Portable Oxygen Concentrator

The DeVilbiss iGo2 Portable Oxygen Concentrator is designed to be highly portable with a compact shape for easy transport. Weighing only 15.5 pounds without battery and 19 pounds with battery, this portable oxygen concentrator delivers smart and useful features for oxygen therapy on the go, including a user-friendly interface with an easily readable battery life gauge and openings for the nasal cannula and external power supply that are easily accessible even with the rolling carrying case.

Technology Comparison

CAIRE Freestyle Comfort Portable Oxygen Concentrator

The Caire FreeStyle Comfort has 13 system alarms to warn users that something may be wrong with their device. These alarms include no breath detection, external power failure, high/low operating temperature, and overall system failure. Each alarm will sound on the device, as well as display an icon on the display screen.

The award-winning FreeStyle Comfort Portable Oxygen Concentrator delivers oxygen in 5 different pulse dose settings, from 210mL per minute to 1,050mL per minute. This device also offers a large, easy-to-read LCD for battery status, alarm notifications, and oxygen settings.

DeVilbiss iGo2 Portable Oxygen Concentrator

While most portable oxygen concentrators only offer pulse dose oxygen delivery, the iGo2 offers both pulse dose and continuous flow settings, ensuring that users will receive the oxygen therapy they need no matter what.

With pulse dose, oxygen is delivered as individuals inhale, preserving the battery life of the concentrator and only delivering therapy as it is required. The DeVilbiss iGo2 provides users with 6 pulse dose settings, which can easily be changed via the Mode Select and Flow Rate buttons on the display panel.

Size and Weight Comparison 

CAIRE Freestyle Comfort Portable Oxygen Concentrator

The Caire FreeStyle Comfort Portable oxygen concentrator is one of the lightest POCs available on the market. Weighing only 5 pounds with the standard battery and a pound extra with the optional extended battery, it is very easy to take around with you. The minimized frame design also makes it more effective as a portable oxygen concentrator, creating less bulk so that it can be easily packed for travel.

DeVilbiss iGo2 Portable Oxygen Concentrator

The iGo2 is lightweight and compact for easy travel and portability. It weighs 15 lbs without the battery and 19 lbs when the battery is in the unit. These compact dimensions make it simple to take anywhere. Additionally, the wheeled cart this unit comes with provides even greater and easier portability.

Battery Life and Charging Comparison

CAIRE Freestyle Comfort Portable Oxygen Concentrator

The Caire FreeStyle Comfort Portable Oxygen Concentrator comes standard with an 8-cell battery. Depending on your oxygen settings, the battery will provide between 2 hours (pulse dose setting 5) and 8 hours (pulse dose setting 1) of use. As an optional purchase, an extended 16-cell battery is available that will double the life of your concentrator. The battery duration chart (shown here) provides a complete breakdown of approximate usage hours for both batteries.

Caire FreeStyle Comfort Battery Pack

DeVilbiss iGo2 Portable Oxygen Concentrator

The DeVilbiss portable oxygen concentrator comes with a rechargeable lithium-ion battery that can last up to 5.4 hours (pulse dose setting 1). Battery life will vary depending on your oxygen settings, so be sure to plan ahead. Additional batteries and external battery chargers are great add-ons to ensure you always have enough power on hand. Charge time is approximately 2 – 4.5 hours, depending on the flow setting. The battery will not charge when connected to DC power.

Noise Level Comparison

CAIRE Freestyle Comfort Portable Oxygen Concentrator

The FreeStyle Comfort brings usability and convenience to a new level. A single button push starts the device, and it takes less than 2 minutes to start delivering oxygen. The machine’s sound level is a soft 43 decibels, so you can use it with confidence whether at home, in a restaurant, or at church. It’s also fully FAA certified and approved for airline flights on most major airlines. The low noise level makes it ideal for in-flight use.

DeVilbiss iGo2 Portable Oxygen Concentrator

The DeVilbiss brand is known for making oxygen concentrators that are exceptionally quiet and energy efficient. The portable iGo2’s maximum decibel level is 40, which is only as loud as a whisper, so you don’t need to worry about the hum of your oxygen concentrator bothering you or anyone around you. Many people even enjoy the gentle hum of their oxygen concentrator, as they provide white noise that helps lull them off to sleep if they need to use it while they sleep.

Comparison of Oxygen Flow Settings and Output 

CAIRE Freestyle Comfort Portable Oxygen Concentrator

The FreeStyle Comfort combines advanced oxygen concentrator and oxygen conserving technologies to maximum portability and ambulation. The pulse flow delivery quickly senses when the user breathes in and delivers a pulse of oxygen at the beginning of each inhalation. Pulse flow delivery is ideal for act-advanced activities and time away from home. It conserves oxygen and extends battery life as opposed to being continuous enough to be carried via the handling flow. Adjust to 5 different pulse dose settings, from 210mL per minute to 1,050mL per minute.

DeVilbiss iGo2 Portable Oxygen Concentrator

The DeVilbiss iGo2 offers both continuous flow and pulse mode options. This portable oxygen concentrator provides continuous oxygen between 1 liter per minute (LPM) and 3 LPM. The iGo2 also provides users with 6 pulse dose settings, which can easily be changed via the Mode Select and Flow Rate buttons on the display panel. A setting of 1 LPM in continuous flow mode does not deliver the same amount of oxygen as a setting of 1 in pulse dose mode. Speak with your doctor to determine which mode and which settings may be best for you.

Side-By-Side Comparison

Oxygen ConcentratorCAIRE Freestyle Comfort Portable Oxygen ConcentratorDeVilbiss iGo2 Portable Oxygen Concentrator
DesignErgonomic designPortable design
TechnologyAlarms and alerts technologyFeatures oxyTrack software
Size and Weight6 lbs19 lbs
Battery LifeBetween 2 hours (pulse dose setting 5) and 8 hours (pulse dose setting 1)up to 5.4 hours on PulseMode
Noise Level 43 decibels40 decibels
Oxygen Flow Settings1-5 Pulse Flow settingsPulseDose Mode settings: 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0

Continuous Flow Mode: 1lpm, 2lpm, and 3lpm

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DeVilbiss iGo2 Or CAIRE Freestyle Comfort – Which Is Better?

DeVilbiss iGo 2 Vs Freestyle Comfort Portable Oxygen Concentrator

Both portable oxygen concentrators deliver numerous benefits to users, depending on their needs. For those who need the versatility of both continuous flow and pulse mode, the DeVilbiss iGo2 is the preferred option. For those who need only pulse mode and want a design that is lightweight, compact, and ergonomic then the CAIRE Freestyle delivers.

The CAIRE is the lighter of the two machines but offers fewer features. You get more bells and whistles with the iGo2 including the highly useful OxyTrack Software which allows you to view performance and usage information. The iGo2 Oxygen Concentrator provides two versions of the software so that both technicians and clinicians can track the usage and performance of this device.

Where Can I Buy the DeVilbiss iGo2 Portable Oxygen Concentrator?

The  DeVilbiss iGo2 is available at The Oxygen Concentrator Supply Shop. We offer the additional benefit of expert staff who can help you by answering any questions before your purchase. Our team can also assist with your doctor’s prescription and provide help with any accessories such as nasal cannulas or oxygen tubing that you might need.

Buy the DeVilbiss iGo2

Where Can I Buy the CAIRE Freestyle Comfort Portable Oxygen Concentrator?

Much like the iGo2, The CAIRE Freestyle Comfort portable oxygen concentrator is available at The Oxygen Concentrator Supply Shop. Our helpful staff can provide you with answers to all your questions and help you through the entire purchase process. You also will receive free shipping on your order when you buy now.

Buy the CAIRE Freestyle Comfort