How do I know my transaction will be safe?

Our online shopping cart and security technology ensures the safest and most reliable checkout experience for our customers.

Do I have to pay sales tax?

Our business is located in NC. If your order is from NC you will be charged a sales tax.

Is the machine or system easy to use?

Yes. Basically you plug it in, turn it on. It is ready in about one minute. For the bag system. Start the machine, fill the bag, connect with the mask hoses.

How much does the machine weigh?

From 2 to 60 pounds. Unit specifications are revealed when clicking on the individual machine icons.

Can I change the amount of oxygen that comes out?

Yes. There is a flow knob that goes from one-half liter per minute to 5 liters or 10 liters per minute or more, depending on the production capacity of the unit.

How much oxygen do the units produce?

All of our units produce 93% – 95% oxygen. NONE produce 100%.

How does it make the oxygen?

It takes air from the room, filters out the nitrogen and gives you the pure oxygen. The nitrogen is absorbed by the zeolite in canisters inside the machine.

How long will it last?

They are built to last over 10,000 hours.

Do I need a prescription or health evaluation?

No, not to buy a machine or reservoir bags.

What comes with the machine?

For Recreation and Hobby use, you will receive a 50-foot hose, 1 nasal cannula, a humidifier bottle and a manual.

What kind of health benefits can it provide?

We do not provide medical advice. Search “oxygen” on the breathing.com website. Seek additional information regarding medical and non-medical uses by visiting our sponsors at OxygenAndHealth.info They offer at no charge to private association members several PDF searchable books related to Manfred Von Ardenne, Oxygen Multistep Therapy, Majid Ali, Oxygen and Aging and others. We can say that we believe massive amounts of supplemental oxygen is the strongest source of accelerating health, well being, endurance, strength and recovery and greatly reducing the possibility of sickness.

Can I use the machine with my CPAP/BIPAP?

Yes, we offer a CPAP adaptor for $6.00.

Where are you located?

1820 Sunhaven Ct, Charlotte, NC 28262

Where does the machine ship from?

The closest distribution center to the customer via FedEx ground or UPS ground. There are several distribution points across the USA. Worldwide ships mostly from China.

Estimated time for arrival?

Within 4 – 14 days depending on national holidays and inclement weather.

Why an O2E2®?

We stand behind our products. We have the best system and prices in the country. Many oxygen concentrators/generators are sold by private parties or small companies that may not withstand the test of time. We have been in business for over 20 years and have sold thousands!

What is your return/refund policy?

If not satisfied for any reason, the oxygen unit can be returned within 30 days of delivery for refund of purchase price, less $125.00 (Continental USA) and $299.00 (Alaska, Hawaii and Canada) for shipping. Concentrator must be received in good operating condition. You MUST call us for a Return Authorization Number (RAP) and return shipping address.

How do I contact you?

Please feel free to contact us if you have questions about our products, or if you are looking for something specific. Call us today at 866-694-6425 for US customers and +1 704-597-6775 for international customers, from Monday to Friday 10am – 6pm EST. You can also email us at support@breathing.com. We are located at: 1820 Sunhaven Ct. Charlotte, NC 28262