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Oxygen concentrator with CPAP Machine

Connecting Your Oxygen Concentrator to Your CPAP Machine: A Guide to Improved Respiratory Health

Continuous positive airway pressure (CPAP) therapy is a well-established treatment for obstructive sleep apnea (OSA). By delivering a constant stream of pressurized air through a mask, CPAP keeps your airway open during sleep, preventing the breathing interruptions and sleep disturbances characteristic of OSA.

In some cases, individuals with OSA may also require supplemental oxygen therapy. This is where oxygen concentrators come in. Oxygen concentrators are medical devices that electronically concentrate the oxygen from the ambient air, providing a continuous flow of enriched oxygen for inhalation.

If you're using both a CPAP machine and an oxygen concentrator, you'll need to connect them properly to ensure you receive the optimal flow of oxygenated air during sleep therapy.

Understanding Your Options for Connection

There are two primary methods for connecting an oxygen concentrator to a CPAP machine:

1. Direct Connection (if your CPAP mask has an oxygen port):

Some CPAP masks come equipped with a dedicated oxygen port. This port allows you to connect the oxygen tubing directly from your concentrator to the mask, bypassing the CPAP machine itself.

  • Benefits: This method is the simplest and most efficient way to connect if your mask has an oxygen port. It eliminates the need for additional equipment and minimizes the amount of tubing you'll need to manage.
  • Considerations: Not all CPAP masks have oxygen ports. Consult your CPAP user manual or healthcare provider to determine if your mask is compatible with direct connection.

2. Using an Oxygen Bleed-In Adapter:

The most common method for connecting an oxygen concentrator to a CPAP machine involves using an oxygen bleed-in adapter. This is a small, inexpensive device that connects the oxygen concentrator tubing to the CPAP machine's air inlet tubing.

  • Benefits: This method is universally applicable, regardless of whether your CPAP mask has an oxygen port. It allows for precise control over the amount of supplemental oxygen delivered.
  • Considerations: Using a bleed-in adapter adds an additional connection point and a short length of extra tubing to your CPAP setup.

A Step-by-Step Guide to Connecting Your Oxygen Concentrator to CPAP machine with a Bleed-In Adapter


  • Oxygen concentrator
  • CPAP machine
  • CPAP mask
  • CPAP tubing
  • Oxygen tubing (provided with your concentrator)
  • Oxygen bleed-in adapter


  1. Turn off both the CPAP machine and the oxygen concentrator. Safety first! Always ensure both devices are powered down before making any connections.
  2. Attach the CPAP tubing to your CPAP mask. Refer to your CPAP user manual for specific instructions on connecting the tubing to the mask.
  3. Connect the other end of the CPAP tubing to the oxygen bleed-in adapter. The tubing should fit snugly onto the designated inlet on the adapter.
  4. Attach the oxygen tubing from your concentrator to the oxygen inlet port on the bleed-in adapter. This is typically a smaller port compared to the one used for the CPAP tubing.
  5. Double-check all connections to ensure they are secure and airtight. Leaks can compromise the effectiveness of your oxygen therapy.

Additional Tips for Connecting Your Oxygen Concentrator to CPAP

  • Consult your user manuals: Both your CPAP machine and oxygen concentrator will have specific instructions for setup and connection. Refer to these manuals for detailed guidance.
  • Use the correct tubing: Ensure you're using the tubing specifically designed for your CPAP machine and oxygen concentrator. Avoid using generic tubing, as it might not fit properly and could create leaks.
  • Minimize leaks: Even small leaks can significantly impact the effectiveness of your oxygen therapy. Regularly inspect all connections for signs of wear or damage.
  • Consider humidifier compatibility: If you use a humidifier with your CPAP machine, ensure it's compatible with supplemental oxygen therapy. Some humidifiers can malfunction when used with oxygen concentrators.

VARON: Your Partner in Sleep Therapy Solutions

VARON is a leading provider of high-quality sleep therapy solutions, including oxygen concentrators and CPAP machines. We recently launched the innovative 20A CPAP machine, designed for comfort, ease of use, and optimal user experience.


Looking for a new CPAP machine or need guidance on connecting your oxygen concentrator? VARON is here to help! Our knowledgeable representatives can answer your questions and recommend the right CPAP machine or oxygen concentrator to meet your individual needs.

Frequently Asked Questions

Q. Can I use an oxygen concentrator with my CPAP machine?

Yes, in some cases, you can use an oxygen concentrator to supplement the oxygen delivered by your CPAP machine. This is typically only recommended if prescribed by your doctor for underlying respiratory conditions.

Q. What type of oxygen concentrator works with CPAP?

Only continuous flow oxygen concentrators are compatible with CPAP machines. Pulse-dose concentrators, which deliver oxygen in bursts, are not suitable for CPAP therapy.

Q. How do I connect an oxygen concentrator to my CPAP machine?

There are two main methods for connecting an oxygen concentrator to your CPAP machine:

  • Bleed-in connector: This small adapter attaches to the CPAP machine's outlet and allows you to connect the oxygen tubing from your concentrator.
  • CPAP mask with built-in oxygen port: Some CPAP masks have a dedicated port for connecting oxygen tubing directly.

Q. What if my CPAP mask doesn't have an oxygen port?

You can purchase a bleed-in connector to connect your oxygen concentrator to the CPAP machine's tubing.

Q. Do I need any special instructions for using both machines together?

It's crucial to follow the instructions provided by your doctor and the manufacturer's manuals for both your CPAP machine and oxygen concentrator. Here are some general tips:

  • Ensure your oxygen concentrator is turned on and functioning properly before starting your CPAP therapy.
  • Adjust the oxygen flow rate according to your doctor's recommendation.
  • Regularly check the oxygen concentrator's filter and replace it as needed.
  • Be mindful of potential tripping hazards from additional tubing.

Q. What are the risks of using an oxygen concentrator with a CPAP machine?

Using too much supplemental oxygen can be dangerous. It's essential to consult your doctor to determine the appropriate oxygen flow rate for your specific needs.

Q. Who should not use an oxygen concentrator with a CPAP machine?

If you haven't been diagnosed with a respiratory condition requiring supplemental oxygen, you should not use an oxygen concentrator with your CPAP. Always consult your doctor before making any changes to your sleep therapy routine.

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