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Oxygen Therapy

Oxygen Concentrators for Oxygen Therapy

An oxygen concentrator pulls in the air around you, filters out other gases, and delivers oxygen-enriched air through a nasal cannula. It is the most common way to use supplemental oxygen at home or on the go. Oxygen therapy is prescribed for people with low blood oxygen, called hypoxemia, often measured as a low oxygen saturation (SpO2) reading. It is used for conditions such as COPD, pulmonary fibrosis, or emphysema, and is different from CPAP therapy for sleep apnea. In the US, a prescription is required to buy an oxygen concentrator.

Portable vs. stationary oxygen concentrators

  • Portable oxygen concentrators (POCs): lightweight, battery-powered units built for mobility and travel. Many are cleared for in-flight use, so check your airline's policy. Shop portable oxygen concentrators.
  • Stationary (home) concentrators: larger units that run on wall power and deliver higher continuous flow for use at home. Shop stationary oxygen concentrators.

Pulse dose vs. continuous flow

Pulse-dose units release a burst of oxygen when you inhale, which conserves battery and keeps the device small. Continuous-flow units deliver a steady stream and are often needed for higher-flow prescriptions or nighttime use. Your prescription tells you which you need. If you use oxygen overnight, see our guide on sleeping with oxygen. For a deeper comparison, read portable vs. stationary oxygen concentrators.

How to choose an oxygen concentrator

Match your prescribed flow rate (measured in liters per minute), then weigh portability and weight, battery life, and whether you need pulse dose or continuous flow. If you are mostly at home, a stationary unit may be simpler; if you travel, a portable unit matters. See our best portable oxygen concentrators roundup and how an oxygen concentrator works.

Shop by brand

We carry trusted oxygen brands including Inogen oxygen concentrators, Drive DeVilbiss, Rhythm Healthcare, and OxLife. Inogen is one of the most recognized names in portable oxygen.

Cost, insurance, and accessories

Oxygen concentrators are FSA/HSA eligible, and coverage may be available through Medicare or private insurance for qualifying patients, so check your plan. Unlike rental programs from some oxygen suppliers, the concentrators here are yours to own. Need replacement parts? Shop nasal cannulas, batteries, and more oxygen therapy accessories.
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FAQs

What is an oxygen concentrator?

An oxygen concentrator is a medical device that delivers concentrated, oxygen-rich air for breathing.

Who needs an oxygen concentrator?

A doctor prescribes supplemental oxygen for people whose blood oxygen runs low (hypoxemia), most often from chronic lung conditions such as COPD, pulmonary fibrosis, or emphysema. Only your healthcare provider can determine whether you need oxygen therapy and at what flow rate. Oxygen therapy is different from CPAP therapy for sleep apnea.

Is a prescription required for an oxygen concentrator?

Yes, a prescription from a healthcare provider is typically required.

What maintenance does an oxygen concentrator require?

Regularly clean filters and check for any signs of wear or damage.

Can an oxygen concentrator be used while sleeping?

Yes, many models are designed for continuous use, including during sleep.

Are oxygen concentrators noisy?

Most models produce a soft humming sound, but noise levels vary by model.

How long does an oxygen concentrator last?

With proper maintenance, a concentrator can last several years.

Do oxygen concentrators need a power source?

Yes, they require electricity to operate. Stationary oxygen concentrators use AC power, while portable oxygen concentrators come with external battery options for charging.

Can oxygen concentrators be used outdoors?

Generally, stationary oxygen concentrators are designed for indoor use, but portable models can be used outdoors and are ideal for travel and mobility.

What is a portable oxygen concentrator?

A portable oxygen concentrator is a smaller, lighter, battery-operated version of a stationary oxygen concentrator designed for mobility.

How much does a portable oxygen concentrator weigh?

Typically between 3 to 10 pounds, depending on the model.

How long does the battery last on a portable oxygen concentrator?

Battery life can range from 2 to 10 hours, depending on the model and usage.

Are portable oxygen concentrators allowed on airplanes?

Yes. Most portable units are accepted for in-flight use under FAA rules, but airlines set their own policies, so confirm with your airline before you fly.

Can portable oxygen concentrators be used while charging?

Yes, most models allow for use while charging.

What is the oxygen flow rate of a portable concentrator?

Flow rates vary, typically ranging from 1 to 5 liters per minute.

Do portable oxygen concentrators have different modes?

Yes, many have pulse dose and continuous flow modes.

Are portable oxygen concentrators noisy?

They are generally quiet units, producing a soft sound.

Can I travel internationally with a portable oxygen concentrator?

Yes, but check the local regulations and availability of power sources.
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