Frequently Asked Questions

Portable oxygen concentrators are the perfect solution for those struggling to breathe, whether due to chronic breathing problems, chronic obstructive pulmonary disease (COPD), emphysema, severe asthma, bronchitis, and other conditions. Portable oxygen concentrators allow our clients to breathe independently again, and participate in normal daily activities. While each of our models are different, there are basics to obtaining, servicing, and maintenance of portable oxygen concentrators.

As the leading provider of portable oxygen concentrators in the United States, US Oxygen Sales strives to ensure each of our clients and their families feel comfortable and safe using our products. Below are the most frequently asked questions regarding the use of portable oxygen concentrators, maintenance of portable oxygen concentrators, and more.

This guide will answer questions to help clarify the following topics and more:

  • Different types of Oxygen Delivery through Concentrators
  • Selecting the Right Portable Oxygen Concentrator
  • Payment for Portable Oxygen Concentrators
  • Servicing Your Portable Oxygen Concentrator
  • Upgrading Portable Oxygen Concentrators
  • Warranty for Your Portable Oxygen Concentrator

If you do not find the answer to your question listed on this page, please feel free to contact our team at 888-632-2235. It is our goal to help you breathe free again.


Are oxygen concentrators covered by Medicaid, Medicare and other insurance?
Yes, and no. US Oxygen Sales’ consultants are insurance experts, and they have a track record of successfully assisting customers with their Medicaid and Medicare options. Our consultants also assist patients with private insurance reimbursement. No frustration, more savings, and a successful transaction every time. 
For more details about insurance options, please refer to our dedicated resource page regarding  Medicare coverage for portable oxygen concentrators. 
Where is US Oxygen Sales located?

The US Oxygen Sales headquarters is located in sunny Boca Raton, Florida, and we have locations in California, Colorado, Texas, and Pennsylvania, with more coming soon.  

Some clients are concerned because there are no portable oxygen concentrator suppliers near them. However, unlike in the past, physical locations no longer affect service. Internet and phone access has allowed us to help our customers all over the nation, at all times.  

Part of our service is the US Oxygen Sales Platinum Membership, which guarantees: 

  • 24-hour support and assistance 

  • 365 days a year  

  • Expert consulting from industry experts who stand up for you 

No matter where we are or where you travel, US Oxygen Sales is in your pocket, we are simply a phone call away. 

BEWARE of any company claiming to have multiple showrooms or multiple repair centers that don’t exist. 

What do I do when my portable oxygen concentrator needs service?

The portable oxygen concentrator is going to need service at some point.

US Oxygen Sales has, without a doubt, the best U.S.A. factory trained and ‘certified’ team of technicians. Our 24/7 expert consultants and technicians can often diagnose issues over the phone and recommend solutions right then and there; no waiting, no fuss.

It’s important to note that no portable oxygen concentrator suppliers are authorized to repair devices themselves. If the issue cannot be resolved over the phone and repairs are needed, US Oxygen Sales will arrange to get your unit repaired and returned to you quickly. We bat for you.

BEWARE of companies that tell you they have repair facilities, that is completely untrue and unauthorized!

Do I need a prescription for an oxygen concentrator?

If Medicare or your insurance is paying or is to pay for your oxygen equipment, they will require a prescription (as well as extensive additional documentation) to insure medical necessity before they will pay. You do not need a new prescription for purchase If you already use some form of oxygen delivery equipment; a copy of the existing prescription will suffice.

Our oxygen concentrator consultants will also assist with the finding and confirming of prescriptions. US Oxygen Sales has referral programs and strong relationships with almost all of the major oxygen supply companies, so we never have any problems obtaining copies of oxygen concentrator prescriptions.

Can I Test an Oxygen Concentrator Before I Buy it?

Yes, you can try your oxygen concentrator before you make your final decision; whether it be a few hours or a few days, we encourage our clients to take their time to ensure that they are comfortable and happy with their choice.

Our 100% customer satisfaction guarantee is built on the idea that everyone’s needs are different.

Why are some portable oxygen concentrators on Amazon priced at $500 or Less?

Simply put, those oxygen concentrators are cheap and were not intended for medical use.

The online portable oxygen concentrator market is flooded with devices that are meant for use in polluted areas like China, India and Thailand. These concentrators are used for recreational purposes and almost all of these devices never deliver more than 30% oxygen purity to air ratio.

If you are suffering from a medical condition, these portable oxygen concentrators simply do not have the power to deliver the prescribed levels of oxygen that you need. US Oxygen Sales concentrators output roughly 90% oxygen purity to air ratio.

Those who suffer from COPD, emphysema, pulmonary fibrosis, and other medical conditions should not buy cheap, online devices from non-reputable sources.

How can I pay for my oxygen concentrator?

US Oxygen Sales accepts all forms of payments: cash, personal checks, wire transfers, Visa, MasterCard, American Express, Discover card, and PayPal.

What if I can’t afford to pay all at once?

We are here to help. We have a lay-away program for oxygen concentrators and you can decide how much and how often you can make payments.

Call us now and we will discuss your payment options: 1(888)-632-2235.

Do you rent portable oxygen concentrators?

Yes, US Oxygen Sales rents portable oxygen concentrators by the week and at affordable rates.

More often than not, our clients will want to purchase their rental after realizing that portable oxygen concentrators drastically improve the quality of life and encourage freedom and mobility. US Oxygen Sales makes purchasing easier by deducting the amount paid while renting from the unit price.

Try out a portable oxygen concentrator before you buy it and you will have already made payments towards owning it.

Is my portable oxygen concentrator a tax write-off?

Yes, medical expenses can be used as a tax write-off. However, you should speak to your accountant or a tax professional to fully understand your personal situation and figure out exactly what you can and cannot claim.

Can portable concentrators be used and taken on an airplane or cruise ship safely?

All of the portable oxygen concentrators sold by US Oxygen are FAA approved for air travel. Concentrators are much easier and safer to travel with than oxygen tanks. Most airlines require enough battery duration to last one and a half times of your flight duration. The FAA only has jurisdiction on flights in US airspace so if you will be traveling internationally, it’s important to speak to your travel agent about specific laws in other countries. Airlines also have their own policies regarding stowing and storing concentrators so be sure to familiarize yourself with their policies before traveling. Call our experts with more specific information available as it relates to air or cruise travel plans.

When I upgrade, what do I do with my old concentrator?

We want our customers to be able to have the concentrator that is best for both their medical and lifestyle needs. It is very important to choose a company with the very best trade in program. We understand and it is very common, that a concentrator that suits your specific needs today, may not be suitable a few years down the road. Some companies claim to have a trade in program, only to learn it is not what they were told it was at the time of purchase. We will pay you top dollar for your trade to put towards your new concentrator. If you have a concentrator to sell, we may be interested in buying it from you. Contact us today to see if your concentrator is eligible for purchase.

Can concentrators be used with CPAP or BiPAP devices?

Yes. Concentrators that have continuous flow are compatible with sleep apnea devices.

Can portable concentrators be used 24 hours a day?

Yes, many people use portable concentrators as their sole source of oxygen. Even some pulse flow concentrators may be used ‘continuously’. Call us to help determine which concentrator would be best suited for your situation. Our experts will help make the decision quickly and easily based on your specific needs. When it comes to concentrators, one size does not fit all.

When will I receive my concentrator?

We ship out of many locations for the quickest delivery possible. We usually ship the same day we process your payment and you will usually receive your concentrator within 2 to 3 business days. We also have expedited shipping available at an additional charge. Be very careful with any competitor offering free overnight shipping. Usually they want you to make a quick or hasty decision in hopes you don’t find a better place to make your purchase decision. When you do, often its too late and fine print of their return policy doesn’t allow you to refuse it or return it. DO NOT ever sign anything before making your purchase decision. It’s a trap.

Do you ship internationally?

In some circumstances for certain devices, we can. We can quote you a price and ETA over the phone but in some countries the shipment may be delayed by customs. The customer is responsible for any custom charges, taxes, or fees levied during transit. Our manufacturer partners have distribution agreements in place in many countries that we do not want to compromise.

Can I get a loaner concentrator while mine is being repaired?

Yes, it is included as part of Premium Platinum Membership that every member of the US Oxygen family receives at no charge.

What is the difference between used and refurbished?

A used concentrator has been taken in on trade or was from our buyback program. It has been thoroughly inspected by our team of certified technicians and will be in perfect working order prior to resale. A refurbished concentrator has been returned to the factory and rebuilt or parts have been replaced so that it is in “like new” condition and certified for use.

Do used and refurbished concentrators come with warranties?

Yes. The length and term of the warranties differ with the unit. You will be given written terms of the warranty upon purchase. Recertified units come with a manufacturer’s warranty that vary in length of term.

Can I travel with my portable oxygen concentrator?

Not only is a portable concentrator a great every day solution to replace the oxygen tanks, but one of thei biggest added bonus’ is the freedome to travel.  They are FAA approved for airline use.  For car travel, not only are they are much safer than transporting numerous tanks, but you can drive as far as you like without ever worrying about refills or running out.

Why do I see different warranty terms over the internet for the same unit?

This friends is an extremely important question and one of the most important reasons anyone should be careful when making a purchase decision for oxygen equipment. Many internet companies out there are perverting with a very important component of your livelihood. INSIST on MANUFACTURER SUPPORTED WARRANTY’S ONLY. MAKE 100% SURE YOU HAVE A MANUFACTURERS WARRANTY AND NOT A WARRANTY FROM THE INTERNET COMPANY. At US oxygen we offer ONLY manufacturer supported warranty’s.  BEWARE of many companies offering 5 year or lifetime warranty’s that are really only 2 year AND are NOT supported by the manufacturer. Why is this important? The answer is…would you really want to rely on the financial resources of a small internet provider to not only still be in business when you need service, but also have the financial reserve when it’s comes time you need service. These repairs when out of warranty carry an average repair cost of $ 800 to $ 1000. The excuse down the road you will most often be given is that the manufacturer no longer supports that unit or that they no longer do business with that company. Stay away from any company offering any warranty that is not manufacturer supported. If they are misleading people about this important topic, what else are these companies hiding?

Free Trials for Oxygen Concentrators

Purchasing an oxygen concentrator is a big deal. It’s a decision that will change your life in many ways. If you purchase the wrong concentrator or a concentrator that you are not ultimately comfortable with.

US Oxygen Sales decided to offer free trials for oxygen concentrators to ensure that our customers have every opportunity to choose the right concentrator for them.

We offer a free 7-day risk-free trial on all portable oxygen concentrators.

Simple choose which portable oxygen concentrator you would like to try, and then call us at 888-632-2235.

We include all accessories you would expect with our free trials for oxygen concentrators because we want our customers to have the experience of owning a concentrator.

All Portable Concentrators Trials Include:

  • Portable concentrator
  • Carry case and shoulder strap
  • AC/DC adapters
  • Battery (or more if they choose)
  • 3-year warranty
  • Manual and cannula
  • Cart (for heavier portable oxygen concentrators)

On top of that, US Oxygen Sales has 27 support centers nationwide and can repair units same day/ next day, lifetime support for all units and we offer veteran discounts as well.

So, once you have finished one of your free trials for oxygen concentrators, you can choose to try another unit or purchase the unit you are trying. We make it easy to go from a trial to a purchase.

Remember that you need a prescription for an oxygen concentrator so be sure to speak to your doctor about our free trials first.

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