OxiMedical is a GCE Authorized Dealer

Portable Oxygen Concentrator with 1 to 2 Continuous and 1 to 6 Pulse Flow

The GCE Zen-O is an easy-to-use 1 to 2 continuous and 1 to 6 pulse flow portable oxygen concentrator that meets your doctor’s orders for continuous flow while sleeping. Providing easy to clean sieve beds and a lightweight body, you’ll be unhindered wherever your lifestyle takes you.
The Zen-O portable oxygen concentrator system includes:

  • Risk-Free 30-Day Trial
  • 3-Year Warranty / Lifetime Service
  • Automatic Warranty Replacement Program
  • Warranty Transfer Protection
  • Upgrade Trade-In Protection
  • Two Batteries (8 hours on pulse 2)
  • AC Home Adapter (U.S. / Overseas)
  • DC Car Adapter (Will charge in car)
  • Carry Bag
  • Cannula (New Ultra-Soft)
  • Meets FAA airline requirements
  • Clinically validated for 24/7 use


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Need a portable for a trip only? We rent a variety of portable oxygen concentrators!
Have a used portable oxygen concentrator? Trade it in for discounts towards a new machine!

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Call 800-335-1633 to learn more about battery and accessory options for the Zen-O

Philips SimplyGo

Call 800-335-1633 to learn more about battery and accessory options for the SimplyGo

Battery Duration Times

Flow Setting 1 Battery 2 Batteries
Pulse 1.0 4 Hours 8 Hours
Pulse 2.0 4 Hours 8 Hours
Pulse 3.0 3 Hours 6 Hours
Pulse 4.0 2.25 Hours 4.5 Hours
Pulse 5.0 2 Hours 4 Hours
Pulse 6.0 1.75 Hours 3.5 Hours
Continuous 0.5 3 Hours 6 Hours
Continuous 1.0 1.75 Hours 3.5 Hours
Continuous 1.5 1.25 Hours 2.5 Hours
Continuous 2.0 .75 Hours 1.5 Hours

Zen-O – Your Oxygen Therapy solution – Basic Service and Maintenance

GCE Zen-O – Your Oxygen Therapy solution for everyday

Zen-O – How to change language on your oxygen concentrator

Zen-O Portable Oxygen Concentrator (FAA compliant)
GCE Zen-O Specifications
Weight: 10.2 lbs
Dimensions: 8.3″ × 6.6″ × 12.3″ inches
Oxygen Flow: 1-6 Pulse Flow Oxygen
0.5-2 Continuous Flow Oxygen
Power Settings: AC adaptor: 100-240V AC(+/- 10%) 50-60 Hz in,

24V DC, 6.25A out

DC adaptor: 11.5 – 16V DC in, 19V, 7.9A out

Battery: Up to 4 Hours on a Single Battery. 8 hours with 2 at 18 BPM.
Noise Level: 38 dB(A) tested to Prüfmethode

14-1 03/2007 MDS-Hi*

42 dB(A) tested to ISO 3744*

Warranty: 3 Years
Pulse mode bolus size (ml/breath) at each pulse setting
Breaths per minute Setting 1 Setting 2 Setting 3 Setting 4 Setting 5 Setting 6
15 11 22 33 44 55 66
20 11 22 33 44 55 66
25 11 22 33 44 55 66
30 11 22 33 44 55 66
35 11 22 33 44 55 57
40 11 22 33 44 50 50

Understanding Your Oxygen Order Before You Buy a POC

  • Oxygen is prescribed by a control of the flow rate, i.e., liter flow. The common 1-3 liters per minute continuous flow is not appropriate in all situations. This could be too much or not enough.
  • Precision in the use of the proper flow, or amount of oxygen, is necessary. The flow of oxygen should achieve the normal amount of oxygen in your blood, expressed as a saturation above 90%.*

    What to Know Before You Buy a POC

  • Portable Oxygen Concentrators produce oxygen, they do not store oxygen.
  • Portable concentrators produce varying levels of oxygen per minute, which allows for an acceptable dose of oxygen every breath you take.

  • Portable concentrators that weigh 2 to 8 pounds only deliver oxygen on-demand pulse flow. Manufacturers of these devices place arbitrary numbers such as 1-3 or 1-6 to refer to the size of the pulse flow of oxygen and are not the same as liter flow. These settings are considered liter flow equivalents. Also, these devices do not all produce the same amount of oxygen at a given setting.

    Why Self-Monitor Before You Buy a POC

  • Many people commonly check their blood pressure, blood sugar or air flow rate (peak flow) at home. We can measure temperature and weight whenever we have the need.

  • We can now measure our blood oxygen and pulse rate at home as well, using a simple pulse oximeter. A common word used when measuring oxygen is titration.

  • Titrating is the measurement of what your oxygen equipment setting is achieving in the arterial blood. It’s the blood that energizes the tissue. By taking your own measurements, you can adjust your oxygen setting for any situation and with any portable oxygen concentrator.

    Who to Ask Before You Buy a POC

  • We understand that finding a portable oxygen concentrator that accommodates both lifestyle and oxygen needs can be a difficult process for both you and your loved one. Our respiratory team will take the time necessary to choose the right portable concentrator for your respiratory needs.
  • Our trial period on all portable oxygen concentrators assures your oxygen needs are met.
  • * This is a general statement. Your physician must prescribe your specific target saturation level.

    30-Day Risk-Free Trial

    We understand that a portable oxygen concentrator can be a big investment. At OxiMedical, we give you 30 days (up to 15 hours of use) to decide if the portable concentrator you purchased is right for you. We recommend you visit your doctor or pulmonary rehab to assure you purchased the right portable concentrator.

    • Exchange – If you are not satisfied with the portable you purchased, we will exchange it for the portable that meets your needs. All exchanges must occur within 30 days from purchase date (limited to one exchange).
    • Return – You may return your portable concentrator within 30 days of purchase for a refund of the product sale price, less a $99 processing fee, which includes return shipping costs.
    • See our Return Policy for full details.

    OxiMedical Promise

    • Protected Warranty

      In the eyes of the factory, OxiMedical holds the warranty for your unit. We promise to maintain your factory warranty if you transfer ownership of your portable concentrator.
    • Trade-In Upgrade Program

      We give you the freedom to trade-in your portable for a different model, whether you need a higher flow setting or want the latest technology.
    • Replacement/Loaner Program

      If your portable concentrator needs repair while under warranty, we will provide you with a replacement or a free loaner. You only pay for shipping.

      NOTE: Factory Repairs Take Up to 6 Weeks so you may find a Loaner to be indispensable.
    • Buyback Program

      If you do not have a need for the portable concentrator in the future, we offer a no-hassle buyback.

    About GCE Zen-O

    Zen-O offers the best of both words – continuous flow for night use and pulse flow for daytime use – in a compact portable concentrator that weighs only 10 pounds. You’ll have peace of mind knowing that Zen-O can provide you with sufficient oxygen 24 hours per day. With continuous flow up to 2 LPM, the Zen-O meets your oxygen needs while sleeping and can be used with a CPAP device. While on pulse flow, Zen-O delivers oxygen in response to your needs. Unlike other devices that provide a fixed amount of oxygen over the course of a minute, Zen-O automatically increases the amount of oxygen delivered as your breath rate rises, giving you more oxygen when you need it most.


    Zen-O features a compact design even when used with the mobile cart and has an attractive carry bag that also protects the unit from scuffs and scratches. Rugged in design, the Zen-O is supplied with a 3-year warranty or 15,000 hours of total use, as well as a 3-year warranty on the sieve beds. Zen-O meets all FAA requirements for air travel and can easily stow under the seat.