Inogen's One G5 is discreet and quiet with a long battery life.
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When prescribed by your doctor, using supplemental oxygen helps you feel less shortness of breath and fatigue. When used as directed, you may feel more energized, sleep better, and improve your quality of life. Thanks to modern portable oxygen concentrators, you can experience the benefits of oxygen therapy outside of your home.
The ambient air around us is only about 21% oxygen. People with chronic conditions that cause difficulty breathing, such as emphysema and COPD, require medical oxygen. Portable oxygen concentrators (POCs) work by pulling in air through a filter and compressing it. “It's a way to extract oxygen from the air and remove the nitrogen so that the concentration of oxygen is higher than ambient air,” says Kimberly Langdon, MD, Ohio-based physician and VP of product development and research at Physician Integrative Laboratories. “These are safer than traditional pressurized oxygen tanks and more economical and convenient. They’re also easier to transport because they aren’t as bulky or heavy.”
New portable oxygen concentrators average between $2,000 to $4,000. Most fall within the $2,500 range. When looking for a portable oxygen concentrator, Dr. Langdon recommends considering portability, battery life, and weight. We researched dozens of machines using these criteria as well as price and airflow. A pulmonologist from our Medical Expert Board also reviewed the contents of this article for medical accuracy surrounding portable oxygen concentrators and the importance of oxygen output, delivery method, and flow type. Based on our research, these are the best portable oxygen concentrators on the market.
Up to 10 hours of battery life when used with a double battery
Optional Inogen Connect mobile app to access real-time stats
Double battery and additional accessories sold separately
The Inogen One G5 is designed for full-time usage to match your lifestyle. When you’re at home, the AC power supply can be plugged into any standard outlet. When you’re out and about, the single battery lasts up to 6 hours and 30 minutes. The optional double battery can last up to 13 hours when used on the lowest setting. The pulse dose delivery has six flow settings and delivers a maximum oxygen output of 1260 milliliters per minute (ml/min).
The G5 puts your health first with audible alerts in case of a power outage, no-breath detected alarms, and oxygen purity checks. Adjust your Inogen One G5 using the simple control functions on the easy-to-read LCD display and track your stats in real time with the optional Inogen Connect mobile app. The unobtrusive design of the carrying case makes traveling with your medical device easy and inconspicuous. It is one of the lightest and quietest portable oxygen concentrators available and our best overall pick.
Weight: 4.7 pounds | Delivery/Flow Type: Pulse | Battery Life: 6.5 hours | Max. Oxygen Output: 1260 ml/min
Includes carrying case, detachable accessory bag, and mobile cart
Some users report a risk of blowing a fuse during car charging
The Respironics SimplyGo has a continuous flow of up to 2 liters per minute (LPM). The pulse dose range is 1-6, with the highest setting of 6 having an output of about 1.44 LPM. In addition to great output, this portable oxygen concentrator is designed with enhanced safety features. Alarms will notify you of high breath rate, no breath detection, low oxygen, system technical fault, depleted battery, and wrong battery for your peace of mind.
At 10 pounds and with a modern design of under 12 inches wide and tall, it is one of the smallest portable oxygen concentrators with continuous flow. The SimplyGo is FAA approved for air travel and adjusts to altitudes up to 10,000 feet. The carrying case, mobile cart, and accessory bag are included to keep up with your active lifestyle.
Weight: 10 pounds | Delivery/Flow Type: Continuous or Pulse | Battery Life: 3 hours | Max. Oxygen Output: 1440 ml/min
Fully functional while charging using the DC adapter
Nine settings for pulse doses
May be too heavy for some users
The SeQual Eclipse 5 is designed to accommodate a variety of users. A standout feature is that this device remains fully functional while recharging the battery using the DC adapter. The battery lasts up to 5 hours when fully charged, depending on usage. This portable oxygen concentrator provides a wide range of both continuous flow and pulse dose oxygen settings making it an option for many people.
When used in a continuous flow, doses are from 0.5-3 LPM. There are nine pulse settings. This helps you adjust to your precise needs and maintain a predictable 90% oxygen with each inhale. SeQual's AutoSAT technology also sets it apart. It helps maintain the same amount of oxygen consistently, even as your breath rate varies. The machine is a bit heavy at just over 18 pounds, but a wheeled mobile cart with a telescoping handle is included. We think that this workhorse is worth the extra weight.
Weight: 18.4 pounds | Delivery/Flow Type: Continuous or Pulse | Battery Life: 5 hours | Max. Oxygen Output: 2304 ml/min
“The ability to use a portable oxygen concentrator really depends on how much oxygen you need, what flow you need it at, and how long you want to use it before you have to go back to your stationary device or replace the battery.” —Albert Rizzo, MD, Chief Medical Officer for the American Lung Association
Easy operation and low maintenance
FAA approved for in-flight use
The EasyPulse POC3 is a no-frills, budget-friendly option. The functions, such as one-touch start and stop, are simple, and it only has three pulse settings. Even with the minimal design, you’ll get up to 95.5% oxygen purity. For your safety, it does have visual and audible alarms. The battery lasts up to 5.5 hours, depending on usage. An optional external battery extends the power for a maximum of 11 hours.
This portable oxygen concentrator weighs less than 5 pounds and is easily transported in the included carrying bag. It’s also FAA-approved for in-flight use and fits under an airplane seat.
Weight: 4.9 pounds | Delivery/Flow Type: Pulse | Battery Life: 5.5 hours | Max. Oxygen Output: 520 ml/min
Optional supplemental battery pack can extend power for up to 3.5 more hours
Takes 4 hours to recharge batteries from 0% to 100%
Experience the freedom of one of the smallest portable oxygen concentrators available. The AirSep Focus only weighs 2 pounds and measures 6.4 inches high by 4.8 inches wide. This pocket-size POC has a pulse flow setting of 2. Although the setting cannot be adjusted, you can expect the same standard 90% purity as much larger devices. The two external batteries last 1.5 hours each, for a total of 3 hours. To extend the usage time for up to 3.5 more hours, an optional Airbelt battery pack can be worn.
AirSep Focus is whisper-quiet and discreet. You’ll be alerted if issues arise, such as cannula disconnect, low battery, breath rate, and more. It’s ideal for travel and your day-to-day active lifestyle.
Weight: 2 pounds | Delivery/Flow Type: Pulse | Battery Life: 3 hours | Max. Oxygen Output: 330 ml/min
Operational at altitudes up to 13,123 feet
Integrated mobile cart with 6-inch wheels and telescoping handle
May be too heavy for some users
Travel to new heights with the Oxlife Independence portable oxygen concentrator. Unlike other models that top out at 10,000 feet, this POC is operational at altitudes of up to 13,123 feet. It weighs 16.7 pounds, making it a bit bulky but durable. The built-in mobile cart has 6-inch wheels and a telescoping handle for easier maneuverability while traveling with your oxygen. The AC and DC adapters allow you to charge the unit while in use.
Oxlife Independence is capable of delivering a continuous flow of up to 3 liters per minute and a pulse dose of 0.5 to 5 liters per minute. The batteries last up to 5.25 hours in a continuous flow and up to 6 hours in pulse mode, depending on the setting.
Weight: 16.7 pounds | Delivery/Flow Type: Continuous or Pulse | Battery Life: 5.75 hours | Max. Oxygen Output: 3000 ml/min
“Patients need discuss which portable oxygen concentrator will meet their needs with their doctor.” —Albert Rizzo, MD, Chief Medical Officer with the American Lung Association
May overheat without proper airflow
The Invacare Platinum is lightweight, compact, and perfectly portable. However, we also recommend this POC for home use. The machine is equipped with HEPA filtration and is relatively quiet, so it won’t disturb your conversations or activities. It’s also only 4.8 pounds and unobtrusive. When you do head outside, the Invacare’s rugged durability is built to keep up. It’s even water resistant for rainy days.
This POC is suitable for people requiring pulse delivery of medical oxygen using settings 1, 2, 3, or 4. The maximum oxygen output is 1000 ml/min at a setting of 4. At home, power the unit with the included AC adapter. On the go, a single battery lasts up to 4 hours. Add an optional second battery for up to 8 hours of battery life.
Weight: 4.8 pounds | Delivery/Flow Type: Pulse | Battery Life: 4 hours | Max. Oxygen Output: 1000 ml/min
Accessible control panel with large buttons enhanced with braille
Power cord can dislodge during vigorous activity.
May not be suitable for individuals with increased oxygen demand
Airsep is known for its compact POCs designed for active users, and the Freestyle 3 is no exception. This wearable unit weighs 4.4 pounds and is 6.1 inches wide, 8.6 inches high, and 3.6 inches deep. The carrying case can be worn on your shoulder or cross-body so that your hands are free. The simplistic control panel features large, easy-to-read buttons enhanced with braille and a cover to prevent accidental touches.
As the name suggests, the Airsep 3 has a maximum pulse setting of 3 with a maximum oxygen output of 498 ml/min. On setting 1, the battery lasts 3.5 hours. On settings 2 and 3, it lasts 2.5 and 2 hours, respectively. An optional Airbelt extends the battery life up to 10 hours. This small, portable oxygen concentrator is ideal for your daily activities, moderate exercise, as well as travel.
Weight: 4.4 pounds | Delivery/Flow Type: Pulse | Battery Life: 3.5 hours | Max. Oxygen Output: 498 ml/min
People are diagnosed with conditions such as emphysema, which make breathing more challenging. We researched dozens of portable oxygen concentrators to help you make an informed decision when oxygen therapy is prescribed by your doctor.
We considered models based on their weight, dimensions, delivery and flow type, oxygen output, and portability. We also spoke with these physicians to get their expert opinions:
Most importantly, we chose devices that are reliable and unassuming with good battery life. Our list includes an array of dependable options that function at home and during travel to support your active and independent lifestyle.
Generally, oxygen concentrators with more power and higher output are heavier and larger. For reference, a device that supplies a continuous flow typically weighs around 20 pounds. POCs with pulse flow tend to be significantly lighter, averaging from 3 to 10 pounds. Thanks to advances in technology and modern design, both types of machines are getting lighter. Most are equipped with or have optional accessories such as carrying cases and rolling carts to make them less conspicuous and more portable. Manufactures are eager to make improvements that support your independence and day-to-day life, including lightening the load of your portable oxygen concentrator.
The main types of portable oxygen concentrators are pulse flow and continuous flow. This is based on the delivery system for the oxygenated air. The pulse flow machine delivers air to the user as short puffs timed to each inhalation. As a result, less oxygen is wasted. “The pulse flow or demand flow delivers oxygen only when the patient is inhaling. This can help conserve power. Nighttime use is more commonly pulse flow. Some operate with continuous flow with the added feature of pulse flow as needed,” says Dr. Langdon.
In contrast, the continuous flow unit produces a continuous stream of oxygen. “One to 5 liters per minute of continuous oxygen flow is a common way to deliver oxygen continuously whether the patient is inhaling or not,” Dr. Langdon noted.
How long a battery lasts varies based on the machine and personal usage. Most batteries last at least 3 hours, some going as high as 6 hours on a single charge. However, many devices have the option to add a second battery that can extend and often doubles the time. Other models remain fully functional while the device is charging.
It is worth noting that, as with most rechargeable batteries, the battery performance may diminish over time. They may need to be replaced after a year or longer. All of the POCs we’ve listed have built-in safety features to alert you when the battery is low.
By far, the number one consideration when shopping for a portable oxygen concentrator is oxygen output. "If you require oxygen therapy, your doctor will prescribe an oxygen flow rate, such as 2 liters per minute. An oxygen flow rate of 2 LPM means the patient will have 2 liters of oxygen flowing into their nostrils over a period of 1 minute. Oxygen prescriptions generally run from 1 liter per minute to 10 liters per minute, with 70% of those patients being prescribed 2 liters or less." Your care provider will help you determine the appropriate oxygen output based on your individual needs. Devices with continuous flow are usually described in liters per minute (LPM). Those with pulse flow are measured in milliliters per minute (ml/mil).
In order for Medicare to potentially pay for oxygen and the additional supplies needed to administer it, first, you must have Medicare Part B coverage.
If your healthcare provider determines that you would benefit from home oxygen, you'll want to follow the steps outlined by Medicare. Before calling the oxygen supply company, make sure you have a written prescription from your practitioner for the home oxygen equipment and supplies you'll need, from the oxygen concentrator all the way down to the tubing. If you don't have a practitioner's order, Medicare won't cover the supplies. Make sure your prescription is signed and dated by your medical professional.
If you travel by plane, your oxygen supplier isn’t required to give you an airline-approved portable oxygen concentrator, and Medicare won’t pay for any oxygen related to air travel.
This depends on your specific condition. If you require an oxygen concentrator, ask your doctor if it's safe to use the device during the night. Some devices are not designed to be used while sleeping, and doing so may trigger the safety alert system.
Most oxygen concentrators are created with durability in mind since they are made for daily use and travel. Even with normal wear and tear, a POC typically lasts between four to seven years. When purchased new, many devices come with a three to five-year warranty. You can help prolong the lifespan of your machine by keeping it clean, staying on top of routine maintenance, and handling it with care to prevent damage.
Most portable oxygen concentrators are designed to run 24/7. However, in order to prevent damage and overheating, it is best to allow your POC to cool off between uses. Unplug the device, remove the batteries, and store it in a cool, dry place. Also, remember that some machines are not appropriate for use while you sleep.
As a seasoned health writer, Jennifer Nied understands how vital quality product recommendations are for treating symptoms safely and effectively at home. For over 10 years, she has reviewed products, interviewed experts, scrutinized ingredients, and pored over research studies and claims to help readers like you understand what works for your specific conditions. Every product in this piece was selected, taking into account recommendations from doctors, published research, and real customer reviews.
Additional reporting for this story by Danielle Zoellner
As a seasoned health writer, Danielle Zoellner knows the importance of finding just the right product to fit your medical needs. Throughout her career, Danielle has interviewed a variety of experts in the medical and health fields while reviewing dozens of products. Her experience and knowledge in the fieldwork together help readers like yourself find the best products for your daily life.
Oxygen Concentrator Store. “Summary of Oxygen Concentrator Liter Flows”
Medicare. https://www.medicare.gov/coverage/oxygen-equipment-accessories
Medicare. https://www.medicare.gov/what-medicare-covers/what-part-b-covers/getting-oxygen-equipment-supplies-in-certain-situations
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