Advertising Disclosure

We may earn money from our partners when you click a link, complete a form or call a phone number.

We believe everyone deserves to make thoughtful, informed purchase decisions. As a result, we provide our buyers guides and local guides free for consumers. We may receive compensation from our partners. However, Retirement Living independently researches companies, and the compensation we receive does not affect the analysis of our staff. Retirement Living will not include companies on our guides that do not meet our quality standards. The compensation we receive from our partners may impact how and where companies appear on our site, including the order in which they appear. As an Amazon Associate Retirement Living earns from qualifying purchases.

Retirement Living independently researches companies, and we use editorial discretion to award companies with special recognition (i.e. Great Value) based on our staff's judgment. We do this to help you identify companies that will meet your specific buying needs, and we do not receive compensation for these designations.

Get Insider Access

Get special offers, advice and tips from Retirement Living delivered to your inbox.

CAIRE, Inc. Portable Oxygen Concentrators

4.4 Stars (12 Reviews)
Most Reviewed
Brands that earn the Most Reviewed badge have received the most customer reviews in their category on Retirement Living over the last 12 months.
Updated: January 20, 2023
By: Jonathan Trout
Jonathan Trout
Content Manager
Jonathan is a former product and content manager for Retirement Living. His background spans sales/marketing, finance, and telecommunications. Jonathan’s expertise in consumer wellness and research-backed data stories helped educate seniors on financial planning, retirement, and community resources. Jonathan graduated from Oklahoma State University with a B.S. in Environmental Sociology.
Content Manager
Edited By: Lauren Hamer
Lauren Hamer
Sr. Editor
Bringing more than a decade of editorial experience to Retirement Living, Lauren focuses on reporting senior-related issues, including retirement planning, finance, consumer protection, and health and wellness. Lauren has edited consumer content for Credible, Angi, Slickdeals, Jobs for the Future, and more.
Sr. Editor

CAIRE Inc. was founded in 1992 with headquarters in Georgia and facilities in California and Europe. CAIRE is part of the Chart Industries family of companies and is the largest manufacturer of portable oxygen concentrators and other oxygen therapy systems. The company is also known as CAIRE Medical.

Editorial Breakdown

Price 4.6 Stars
Flow Settings 4.6 Stars
Battery Life 4.4 Stars
Customer Service 4 Stars

Overall Rating 4.4 Stars

Bottom Line

CAIRE, Inc. is the largest manufacturer of oxygen therapy systems on the market. It offers three models of portable oxygen concentrators ranging in price from around $1,500 to $3,200.

CAIRE, Inc. Portable Oxygen Concentrators Review

CAIRE Inc. is a leading global manufacturer of portable oxygen concentrators and other oxygen supply equipment. The company sells direct to consumers or through limited authorized dealers and has been in business for 50 years. The U.S. military, space exploration labs and high altitude clinics on Mt. Everest all used CAIRE’s high-quality portable oxygen concentrators. CAIRE portable oxygen concentrators feature proprietary breath detection technology specifically geared toward helping the 65 million COPD patients around the world.

CAIRE’s product line includes AirSep, HELiOS and SeQual brands for home, hospice and long-term care oxygen therapy. You will find CAIRE’s oxygen supply equipment in hospitals, homes and used in military and industrial applications.

CAIRE receives industry certification and recognition from the Accreditation Commission for Health Care (ACHC), an independent nonprofit organization. ACHC completes on-site surveys of member facilities every three years to verify continued compliance with many strict requirements, industry best practices and state and federal regulations. Consumers can be assured ACHC-accredited company policies are in line with third-party payers such as the Centers for Medicare & Medicaid Services (CMS).


  • ACHC Accredited
  • No oxygen tanks required
  • Decades of developing oxygen therapies
  • Quality manuals and instructional videos


  • Must call to find local or regional authorized dealers

CAIRE, Inc. Portable Oxygen Concentrator Costs by Model

CAIRE Inc. manufactures three portable oxygen concentrators with a variety of oxygen dosages and delivery methods. An extensive line of accessories, from carrying cases to tubing, is available for each model. All three models are FAA approved, so you can safely travel with these portable oxygen concentrators on planes, buses or other modes of transportation.

Each CAIRE portable oxygen concentrator comes with a user manual and quick start guide. Customers have access to detailed online video tutorials for easy reference and assistance with operating and setting up the products. Instruction includes unboxing and safety videos.

CAIRE Focus Portable Oxygen Concentrator

CAIRE’s Focus is the company’s smallest portable oxygen concentrator and is not much bigger than your palm. Focus uses breath-sensing technology to deliver oxygen only as you inhale instead of a continuous flow. Weighing under two pounds and worn over the shoulder or clipped to a belt, the Focus battery life is three hours. The optional backup battery is handy while traveling. CAIRE Focus functions on AC or DC power with its universal plug and power supply.

CAIRE FreeStyle Portable Oxygen Concentrators

CAIRE’s FreeStyle line offers two lightweight models to choose from with the FreeStyle and FreeStyle 5 with automatic oxygen dose adjustments.

CAIRE FreeStyle

FreeStyle, Source: CAIRE, Inc.

The FreeStyle weighs under five pounds with three pulse settings for oxygen delivery. This portable oxygen concentrator runs up to seven hours on the two batteries included with the FreeStyle. Like the Focus, the FreeStyle utilizes breath detection to deliver oxygen and operates on battery, or AC or DC power.

The FreeStyle 5 is designed specifically for those living with COPD. FreeStyle 5 has all the features of the FreeStyle but is slightly larger, yet still very lightweight. This portable oxygen concentrator runs for five hours using both batteries. The FreeStyle 5 automatically adjusts the bolus (oxygen volume) based on your breath rate, so you continually get the right amount of oxygen as your breath rate changes.

CAIRE Eclipse 5 Portable Oxygen Concentrators

The Eclipse 5 from CAIRE Inc. is a portable oxygen concentrator with wheels to move the portable oxygen concentrator with you, similar to a rolling suitcase. Designed with CAIRE’s proprietary Automat technology breath sensing and automatic bolus adjustment, the Eclipse 5 ensures COPD patients receive the right oxygen dosage regardless of breath rate. This portable oxygen concentrator runs on AC or DC power, or batteries.

The Eclipse 5 can deliver higher bolus doses than smaller models and the highest pulse dose available in an oxygen concentrator. The Eclipse 5 is also a continuous flow portable oxygen concentrator. Battery life is two hours per battery on continuous flow or five hours on pulse flow.

Other CAIRE Oxygen Concentrators

CAIRE’s Companion 5 is a home oxygen concentrator, weighing under 40 pounds to move with ease on wheels around the house. The Companion 5 is a continuous flow model priced at $800 and operates on AC power. CAIRE includes a humidifier stand, and the Companion 5 has a large easy-to-read display with a space-saving narrow profile.

AirSep and SeQual are divisions of CAIRE Inc. Both companies manufacture oxygen devices for use in medical and industrial applications. AirSep portable oxygen concentrators are light and easy to carry, but we did not find CAIRE’s breath detection technology in this line. SeQual manufactures the Eclipse 5 portable oxygen concentrator which appears to be equally equipped compared to CAIRE’s identically-named model.

CAIRE Inc. Portable Oxygen Generators
Feature Focus FreeStyle FreeStyle 5 Eclipse 5
Retail Price $1,500 $1,700 $1,700 $3,200
Weight 1.75 lbs 5 lbs 7 lbs 18 lbs
Battery Life 3 hours* 7 hours* 5 hours* 2 to 5 hours
Pulse Flow Settings 2 1 to 5 1 to 5 1 to 9
Continuous Flow Settings N/A N/A N/A .5 to 3 LPM

*Using both batteries on lower settings

CAIRE, Inc. Portable Oxygen Concentrator Warranty

CAIRE honors warranties only for portable oxygen concentrators purchased factory direct or from an authorized retailer. The new product warranty covers three to five years depending on the model and one year on standard accessories. The warranty covers defects exclusive of wear and tear, misuse or abuse of the CAIRE portable oxygen concentrator.

Where to Buy CAIRE, Inc. Portable Oxygen Concentrators

You can buy CAIRE portable oxygen concentrators on the company’s website or from one of four authorized internet retailers: Vitality Medical, Portable Oxygen Solutions, Oxygen Concentrator Store, and OxiMedical. These companies meet CAIRE’s requirements for customer service after the sale, staff training, and inventory levels sufficient for quick delivery. If you prefer to buy a CAIRE product in a store, call the number on the site to find out what stores are authorized sellers in your area.

Buying factory direct from CAIRE includes many benefits:

  • All new units (not rental or refurbished)
  • Extended warranty options
  • 30-day risk-free trial (subject to a $75 restocking fee)
  • Free shipping
  • Free replacement under warranty
  • Set up with a factory field service engineer
  • Lifetime phone support with trained oxygen advisors

Numerous local durable medical equipment suppliers can rent CAIRE portable oxygen concentrators through Medicare.

Financing Your CAIRE, Inc. Portable Oxygen Concentrator

CAIRE offers PayPal Credit to finance portable oxygen concentrators for 36 months. You can avoid interest charges by paying in full within six months. The online financing application is convenient, private and secure, and approval is almost immediate. CAIRE’s financing program comes with PayPal Zero Fraud Liability and Purchase Protection programs. There are other ways to ease the cost of a portable oxygen concentrator if you don’t want to use credit.


Focus, FreeStyle, Eclipse 5, Companion5, Source: CAIRE, Inc.

CAIRE, Inc. Complaints

CAIRE customer reviews on the company’s Facebook page average 4.8 out of 5-stars. Many reviewers noted CAIRE’s quick response to questions and concerns. Customer reviews on CAIRE’s authorized dealer sites range from 3.5 to 4.8 stars on a scale of 5, with an average around 4.75. Most reviews are very favorable, with a few complaints concerning battery discharge speed on devices not in operation. We found no reviews for CAIRE Inc. on consumer rating websites and no Better Business Bureau records.


  • Does insurance pay for a CAIRE portable oxygen concentrator?
    Many private insurance plans pay at least in part for portable oxygen concentrators, and CAIRE representatives can help you determine if your plan has coverage. Medicare, Part B covers oxygen concentrators under certain conditions but usually requires rental first. If you have a Medicare Supplement Insurance plan, you may pay next to nothing out of pocket.

  • Do I need a prescription to buy a CAIRE portable oxygen concentrator?
    Yes, oxygen delivery devices are regulated and require prescriptions. Part of your prescription designates the pulse or continuous flow rate your health condition requires.

  • Since there is no oxygen tank, can I smoke while using a CAIRE portable oxygen concentrator?
    While there is no tank to risk explosion when exposed to flame, the oxygen-rich environment created by any portable oxygen concentrator is a fire risk. Therefore, you can’t smoke, and no one else should smoke near you while you are using a CAIRE portable oxygen concentrator.

  • How can I be sure my CAIRE portable oxygen concentrator is working?
    Every CAIRE portable oxygen concentrator has alarms to trigger if the device malfunctions or the battery life reduces to a certain level. Your CAIRE portable oxygen concentrator is working as long as you hear no alarms and see no alert codes on the control panel.

  • Are CAIRE portable oxygen concentrators noisy?
    Portable oxygen concentrators produce low-level white noise. For comparison, most libraries have an ambient noise level of 40 decibels. CAIRE’s FreeStyle portable oxygen concentrator produces around 43 decibels.

  • How can I rent a used CAIRE portable oxygen concentrator?
    Check with local durable medical equipment suppliers for used CAIRE portable oxygen concentrators, but be aware there may be no warranty. These suppliers are responsible for ensuring used or refurbished portable oxygen concentrators work correctly.


Portable oxygen concentrators provide much more freedom and mobility compared to oxygen tank systems. Portable oxygen concentrators also present fewer safety concerns and no worries about late tank deliveries. CAIRE portable oxygen concentrators are backed by years of successful development, and buying factory direct comes with many benefits. CAIRE portable oxygen concentrators are lightweight yet substantial enough for nearly any oxygen therapy patient.

For pricing information or to start a purchase, call (877) 443-8603 or get started with shopping online.

12 CAIRE, Inc. Reviews

Write Review
1 Star

March 25 2023 2:21PM

Yellow low oxygen light keeps coming on. There is no crimp in the hose and am breathing properly. Had it checked by lincare and was told that nothing was wrong with it and that I wasn't putting cannula far enough up my nose.

They said it would take months to get it back if they had to and that I would have to use the bottles. What a rip off!

Suzy P.
Pueblo, CO
1 Star

January 17 2023 2:28AM

I bought a Caire oxygen concentrator and paid the full retail price out of pocket- the Caire Companion 5. The machine was a lemon. After 15 months the alarm began to sound a lot. I had some issues going on and couldn't get it in for service, so I diddled it and continued to use it.

By 24 months it sounded all the time. I lost part of my hearing dealing with this thing. When I tried to get it repaired under the 3 year warranty, the dealer told me that he was unable to repair this problem, and that Caire charged them so much to get the repairs made externally that he would not honor the warranty.

So effectively Caire has made it too expensive for its distributors to fulfil its warranty, therefore the warranty is worthless. DO NOT BUY unless you want an expensive boondoggle, and the risk of not having oxygen. My machine was a lemon and the company does not stand behind its machines.

You may as well just buy some unit from China. I bet a bunch of executives got a bonus at Caire for making the company more money, by making their warranty worthless! Welcome to America.

Sandra D.
New Haven, CT
2 Stars

February 28 2022 7:40AM

I have been using Caire freestyle comfort for three years now and I'm on my third machine. By the time I get the new or rebuilt in machine it runs for a little while and then I run into the dreaded yellow warning symbols on the display. Three times in 3 years.

I got mine through Lincare via Medicare. It's almost a shame to send it back again because this is getting ridiculous. If it wasn't for the inconvenience of tanks I'd tell them to stuff it....

For the cost of this unit I am surprised at the lack of quality and pride the company must have in both its machines and its repair staff.

Mike A.
Cabot, AR
1 Star

February 10 2022 5:41PM

Purchased a Caire Companion Eco 5 in Oct. of 2021. It failed in about a month. Returned it for repair, and had to rent a unit. Got my unit back in late Jan/early Feb 2022. Plugged it in about a week later, after about 3 days, it started throwing low o2 codes again.

Returning it again, have to keep rental unit, which will cost me more than purchasing the unit. Beware the companies that put out pretty videos that tout how good their equipment is, usually turns out to be crap.

Anthony (Tony) T.
Erlanger, KY
3 Stars

January 10 2022 6:36PM

Let me start with the agent whom I made the purchase with was phenomenal in education and courtesy (Sean **). Although however; I have had my Caire oxygenator for approximately 3 weeks. I paid well over $2700.00 cash for the unit and it was defective.

I have had issues with it not staying charged as it should as well the noise level was very much so annoying to others as well myself.

I reported the issue with the yellow light triangle even while breathing normally and was told that I was not breathing for 15 seconds or more which caused this to happen. Not true on my part. I continued to reach out to the company over a 2 week period with additional issues of the same sort.

I finally called customer service/technical support (Joshua) and spoke with the technician that was assigned.

I was told after 3 weeks of trying to gain resolution that I would be receiving a return label and a brand new unit (not refurbished) and it would be sent to me within 3-4 days when the label started to track. I emailed him the next day and informed him it was at the UPS store.

Well I have yet to receive the unit. I had to cancel a very important trip due to not having the portable device.

I emailed the customer service department again for the 4th time and get a response that the device would be delivered by Thursday this week which is 7 days and too late for another event that I have planned concerning my grandson going to college on a scholarship playing in his first BIG game in Florida.

I spoke with a representative I was not familiar with and she assured me that the department manager (Larry) would contact me and that the reason the concentrator would be late is because of COVID 19 and low work details.

The issue that angered me is that I have made too many calls and emails to get a timely response. DO not blame COVID 19 on your challenges with my unit that I promptly paid for cash. DO not make it seem as though I do not understand what I was told 3-4 days and now it is up to 7.

I have lost money for a trip with my grandson and family that I cannot recover! DO as promised. The sad thing is I am a disabled woman Marine and also have friends that were going to use your company for future purchases. Yet your team has failed me grossly! Not happy at all!

Crystal D D.
Ellenwood, GA
1 Star

August 16 2021 1:25PM

Do not honor the warranty, my dad portable went out it’s either, power pack or desk top charger that went out, we bought it out right from SpryLyfe. It is less than a yr old and can’t get replacement, being told on back order.

Well they should replace whole machine if you can’t get parts, has not been able to use for a month.

Lisa H.
Beaumont, TX
1 Star

June 30 2021 7:27PM

The unit itself is quite good but it ends there. If the unit malfunctions you're out of luck. One of the selling points is their after purchase support. That is a complete lie. During the purchase process they are readily available by phone to answer any questions you have.

Once you purchase the unit the communication ends. You never hear from them again. My unit has malfunctioned. I've been calling them for 2 days now. I've left message after message and absolutely no one calls back.

I did finally get to talk to someone and they told me a tech would call me shortly. He lied, no tech ever called. DO NOT BUY ANYTHING FROM THEM. GO WITH INOGEN.

David B.
Nashua, NH
3 Stars

April 03 2021 8:07PM

I’ve only had this unit a couple weeks and while the airflow is way better than the first dinosaur Medicare rented for me it’s as or more noisy than that one! It doesn't have a back up battery and since I have it on 3, it doesn’t even have a charge for 4 hours.

Not sure this unit is any better. Must be the new bottom of the list machine that Medicare will cover!

Sue T.
Colorado Springs, CO
1 Star

December 04 2020 3:35PM

I have a portable unit which stopped working. I called CAIRE to find out what to do. They gave me a RMA number to return for service. It's been 2 weeks and every time I call I get the same answer, "We will call you." This is under warranty and I have had it less than 6 months.

It cost me $90.00 to send unit back overnight. I depended on this unit for going out. I'm 75 and carrying those heavy tanks is just too much for me.

If I had to do it again, I think I would shop around a little more. They even wanted to charge me $240.00 to rent one. Can you believe that. People be careful.

Joanne W.
Port Orange, FL
1 Star

November 16 2020 3:29PM

During a power outage my mother's Caire FreeStyle Comfort portable oxygen concentrator malfunctioned. Fortunately, my generator was working. I used Lincare to provide this portable concentrator from Caire.

I have been waiting nearly a week for them to tell me if they can pick the faulty equipment up for repair or replacement.

I was told that once it is picked up and shipped out for repair it could take 2-4 weeks before I receive a new or repaired portable concentrator, but once the equipment is picked up I will be given a portable tank that will have to be refilled.

That is understandable, but what I don't understand is the delay in getting this process started. Neither Caire Inc. nor Lincare are not recommended for life supporting equipment.

This is very unsatisfactory. What am I to do if we must to go out? If the generator does not work? How is my mother supposed to breathe?