The 8 Best Portable Oxygen Concentrators of 2019

The Inogen One G3 is a great all-around option for portable oxygen therapy, weighing in under five pounds. The G3 has a pulse setting from one to five—a higher range than most pulse-flow POCs that max out at three—and is good for those out and about traveling a lot, with a battery that lasts up to eight hours. It also comes with a lifetime warranty.

This pulse-flow POC costs less than half of many competitors and only has one filter, which makes for easy cleaning. The EasyPulse PM4150 has a battery that can last over three hours at setting two and it comes with a car adapter if you need to charge on-the-go. The 6.8-pound concentrator is also highly efficient, as the oxygen volume adjusts automatically to breath rate, maintaining minute volume and never giving more than what’s needed.

By far, the AirSep Focus is the smallest portable concentrator available, weighing 1.75 pounds and standing at 4.8 inches wide and 6.4 inches tall. It can last for three hours on one charge and it’s best to carry around another set of batteries if you plan on being out for longer, as it takes four hours to charge. You can take it anywhere—it runs at a quiet hum of 41 decibels, about as loud as a computer or babbling brook.

Lasting up to 10 hours and 15 minutes, this pulse-flow POC is built for the long-haul. It weighs under five pounds and is barely louder than birds chirping (around 44 decibels) on its highest setting. The control panel is easy to read and operate and has an alarm setting that notifies users about low battery, oxygen purity, high temperature, and if a reset is needed.

The Respironics SimplyGo has a continuous flow up to 54 minutes and comes with two rechargeable batteries, so you can always have a charge going while your POC is in use. It is Federal Aviation Administration (FAA) approved, meaning you can bring it on airplanes stress-free. At 10 lbs and less than 12 inches wide and tall, it is one of the smallest POCs with continuous flow.

Though weighing on the heavier side for a pulse-flow POC, at 9.9 pounds, the Respironics EverGo comes with a wheeled travel cart for easy moving. It has a pulse-flow setting up to six—just above the average range of competitors—and has up to eight hours of battery life. A touch screen makes navigating easy, with a lining to protect against smudges and scratches.

The CAIRE Freestyle Comfort lasts up to eight hours despite its petite stature (less than five pounds). The pulse-flow POC runs at a quiet 43 decibels, making it discreet enough for a library and it is FAA-approved. In addition, the CAIRE Freestyle Comfort automatically adjusts to your respiratory rate, providing whatever you need whether you’re exercising or sleeping.

Have the option of continuous-flow or pulse-flow oxygen therapy delivery without sacrificing mobility with this lightweight POC. The iGo can be used with 50-foot cannulas for continuous or 35-foot cannulas for pulse dose mode. And the battery can last up to 5.4 hours on one charge, with it taking less than half that time (2 hours) for it to recharge. For its 15-inch high size, it lets out a quiet 40-decibel hum and is FAA-approved for easy flights.