Portable oxygen concentrators are an excellent way to administer on-the-go oxygen therapy. A portable oxygen concentrator delivers oxygen to people living with low oxygen levels without limiting their mobility. These portable concentrators are life-altering devices, allowing people to travel, spend time with family and friends outside of their home, and lead a productive life while using oxygen therapy.

According to the American Lung Association, some of the conditions that may require supplemental oxygen include COPD (chronic obstructive pulmonary disease), pulmonary fibrosis, pneumonia, severe asthma, cystic fibrosis, and sleep apnea. While oxygen therapy isn’t meant to cure any of these conditions, it can help to reduce shortness of breath, provide better sleep, improve fatigue, and promote a more active lifestyle.

There are many different brands and models of medical oxygen concentrators for people to choose from, so our reviews team rounded up the top portable oxygen concentrators of 2023. We created our list by analyzing important factors for purchasing oxygen concentrators, such as max oxygen output, weight, battery life, and airflow type.

In This Review:

    What Are Portable Oxygen Concentrators?

    Portable oxygen concentrators help deliver medical oxygen to people needing oxygen therapy without hindering mobility or independence. They’re relatively lightweight oxygen concentrators producing oxygen-rich air for you to breathe in easily through a breathing mask or nasal cannula.

    Oxygen concentrators work by pulling in outside air, filtering it to remove nitrogen and any contaminants and compressing it using an electric pump. They typically operate using rechargeable batteries and offer pulse or continuous flow oxygen. At-home, portable concentrators are generally safer and use less electricity than traditional medical oxygen tanks.

    What Are the Best Portable Oxygen Concentrators of 2023?

    Longest Battery Life: CAIRE Freestyle Comfort
    Quietest: Philips Respironics SimplyGo Mini
    Best for Travel: Belluscura X-PLOR
    Best Pulse Flow: Inogen One G5
    Best Continuous Flow: CAIRE SeQuel Eclipse 5

    Comparing the Top Portable Oxygen Concentrators


    Inogen One G5

    CAIRE SeQuel Eclipse 5

    Philips Respironics SimplyGo Mini

    CAIRE Freestyle Comfort

    Belluscura X-PLOR


    4.7 lbs

    18.4 lbs

    5 lbs

    5 lbs

    3.25 lbs

    Battery Life

    6.5 hours

    5 hours

    4.5 hours

    4 to 8 hours

    2.5 hours


    Flow Type

    Pulse flow

    Pulse and continuous flow

    Pulse flow

    Pulse flow

    Pulse flow

    Max Oxygen Output

    1,260 milliliters per minute

    3,000 milliliters per minute

    1,000 milliliters per minute

    1,050 milliliters per minute

    800 milliliters per minute

    FAA Approved






    Best Portable Oxygen Concentrators in 2023

    Longest Battery Life: CAIRE Freestyle Comfort

    CAIRE Freestyle Comfort Portable Oxygen Concentrator

    UltraSense technology
    Convenient accessories

    Long battery charge time
    Larger battery pack costs extra

    Delivery/Flow Type: Pulse flow
    Weight: 5 lbs
    Battery Life: 8 hrs on setting 1
    Battery Charge Time: 3.5 hours

    The CAIRE Freestyle Comfort portable concentrator features an ergonomic design to make it more comfortable to carry, as well as a long battery life for extended use. Its easy-to-use color control panel offers soft-touch buttons, and the unit can be started with one touch. It has five pulse settings and maximum oxygen output of 1,050 milliliters per minute, plus UltraSense technology that calibrates the oxygen output based on the number of breaths detected. The included eight cell battery offers up to eight hours of use on the lowest pulse dose setting, while the optional 16 cell battery offers up to 16 hours of use on the lowest setting. This makes the CAIRE Freestyle Comfort an excellent choice for travel or outdoor activities.

    Quietest: Philips Respironics SimplyGo Mini

    Philips respironics simply go mini portable oxygen concentrator

    Long battery life
    Lightweight, impact-resistant design
    LCD touchscreen

    Extended battery costs extra

    Delivery/Flow Type: Pulse flow
    Weight: 5 lbs
    Battery Life: 4.5 hours
    Battery Charge Time: 4 hours

    The Philips Respironics SimplyGo Mini is much more compact than conventional medical oxygen tanks and easier to move around the home or take with you during travel. It runs at a low 43 decibels on a setting of 2, making it a quiet piece of equipment for portable oxygen therapy. It provides a max of 1,000 milliliters of oxygen per minute in a pulse dose delivery. The SimplyGo Mini is also incredibly durable, featuring an impact-resistant design that can withstand extreme vibrations and temperatures. It even includes a custom carry case and shoulder strap so you can take it with you wherever you go. 

    Best for Travel: Belluscura X-PLOR

    Belluscura x-plor portable oxygen concentrator

    Extremely lightweight
    Quiet operation
    Includes shoulder strap and carrying bag

    Shorter battery life
    Lower oxygen output

    Delivery/Flow Type: Pulse flow
    Weight: 3.25 lbs
    Battery Life: 2.5 hrs
    Battery Charge Time: 5 hrs

    The Belluscura X-PLOR is the smallest oxygen concentrator on our list, weighing only 3.25 pounds. Despite its small size, it is still capable of delivering up to 800 milliliters of oxygen per minute for up to two and a half hours with the included four cell battery. The unit comes with a shoulder strap and carrying case so you can take it with you anywhere. If you need more than two and a half hours of use, you can purchase an optional eight cell battery for up to five hours of power. Whether you are in the car or at the airport, the Belluscura X-PLOR concentrator is the best choice for travel.

    Best Pulse Flow: Inogen One G5

    Inogen one g5 portable oxygen concentrator

    Runs quietly
    Long battery life

    No continuous flow option
    Requires double battery for longer operation

    Delivery/Flow Type: Pulse flow
    Weight: 4.7 lbs
    Battery Life: 6.5 hrs (single battery on setting 1)
    Battery Charge Time: 4 hrs per battery

    Inogen offers one of the quietest and most portable oxygen concentrators. The Inogen One G5 weighs nearly five pounds when using a single battery and can provide close to six and a half hours of battery life on the lowest setting. While there’s no continuous flow option, it utilizes a proprietary Intelligent Delivery technology for pulse flow oxygen delivery that automatically adjusts to your breathing rate, with six separate settings. The Inogen One G5 provides a max oxygen flow of 1,260 milliliters per minute on its highest pulse dose setting. Best of all, it is extremely quiet, operating at only 39 decibels on a setting of 2. Along with the easy-to-read LCD display, you can use the free Inogen Connect app on your smartphone to monitor the performance of your Inogen One G5. Read our Inogen review for more information.

    Best Continuous Flow: CAIRE SeQuel Eclipse 5

    Caire sequal eclipse 5

    Both continuous flow and pulse dose settings
    Includes cart with wheels and telescoping handle
    Can operate while recharging battery on DC power

    Heavier than some other models
    Louder than smaller units

    Delivery/Flow Type: Pulse and continuous flow
    Weight: 18.4 lbs
    Battery Life: 5 hrs
    Battery Charge Time: 1.8 to 5 hrs

    The SeQuel Eclipse 5 from CAIRE is a top-tier choice if you’re looking for portable oxygen concentrator that offers both pulse flow and continuous flow settings. It is one of the most powerful units on our list, with a maximum oxygen output in continuous flow mode of 3,000 milliliters per minute. It uses AutoSAT technology to help provide a consistent amount of oxygen per minute despite changes in breath rate. While it is larger than some other portable units, weighing 18.4 pounds, it does include a mobile cart with wheels and a telescoping handle for easy transport. Another key feature of the SeQuel Eclipse 5 is that it can function in either pulse dose or continuous flow mode while you recharge the battery, even in the car during travel.

    What to Look for in a Portable Oxygen Concentrator

    Choosing a portable oxygen concentrator that’s right for you will vary based on your personal needs, oxygen therapy goals, and doctor’s prescription. Here are a few other essential factors that you should consider about when selecting the best portable oxygen concentrator.

    Weight: One of the most significant differences between a portable oxygen machine and a traditional medical oxygen tank is the size, including weight. At-home, mobile oxygen devices are intended to be lightweight and compact enough for you to take anywhere. If your prescribed oxygen treatment requires higher oxygen output, you may need a larger and heavier concentrator. But if you’re searching the market for portable oxygen options, pulse flow devices are typically lighter, with many weighing less than 10 pounds. Units with continuous flow settings can weigh nearly 20 pounds or more on average.

    Delivery/flow: When it comes to medical oxygen, there are two primary forms of airflow: pulse flow and continuous flow. A continuous flow unit releases a steady oxygen supply, even when you’re not breathing in. Portable oxygen systems with continuous airflow have larger compressors, and because the flow is constant, some oxygen is wasted.

    A pulse flow concentrator delivers short air puffs synchronized with your breathing, allowing you to inhale the fresh oxygen only when you breathe. Pulse flow units also use less energy than continuous units since they only provide oxygen when you inhale with no wasted oxygen. Although pulse flow is more common with nighttime use, some portable oxygen concentrators have both airflow modes.

    Oxygen output: Knowing how much oxygen the device can pump out is critical. Oxygen output is usually expressed in “milliliters per minute” or “liters per minute,” with 1,000 milliliters per minute being 1 liter per minute. Unlike traditional medical oxygen tanks, portable concentrators give a fixed amount of oxygen based on your airflow settings. A top-rated pulse flow device may deliver up to 1,000-plus milliliters of oxygen per minute, while a continuous unit typically delivers up to 5,000 milliliters of oxygen per minute.

    Battery life: Most portable oxygen concentrators have a single rechargeable battery that can last between three and five hours. Some models have a dual battery capability, which can provide additional hours of use, or where one can be used while the other charges. You can get extra battery life by using power adapters and portable charging equipment. Several smaller, lighter concentrators may offer faster battery charging times.

    Depending on your specific requirements, other variables to consider include machine durability, extra accessories, customer service, and FAA approval if you plan to fly while utilizing oxygen treatment.

    Who Needs a Portable Oxygen Concentrator?

    Many people use portable oxygen concentrators for various medical issues. Chronic obstructive lung disease (COPD), sleep apnea, anemia, and surgery can lower oxygen levels, causing blood oxygen numbers to go below average.

    A portable oxygen concentrator boosts your blood oxygen levels quickly and easily. These machines take in air, compress it, filter out nitrogen and other impurities, and then supply 95 percent pure oxygen to you via a mask or nasal cannula.

    Frequently Asked Questions