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Luna II: All you need to know about your new Auto adjusting CPAP

Luna II: All you need to know about your new Auto adjusting CPAP

We have recently seen a heightened interest in the Luna II APAP machine by React Health, formerly 3B Medical, likely due to the Philips Respironics recall of the Dreamstation series.

Thus, we have observed CPAP users to see what alternatives they are seeking to address their obstructive sleep apnea. Among the options are the Luna 2 and the Luna 3G Machines, which possess an integrated heated humidifier. But do these devices have the necessary features and user-friendly qualities? 

To address this, let's delve deeper into the Luna 2 Auto

A Summary of Luna 2 APAP


The Luna 2 APAP is a high-performance, automated, and reliable system that efficiently provides accurate results. It has a compact design, and various features make it suitable for laboratory environments. The system can quickly and accurately analyze samples and deliver reliable and accurate results. Additionally, the system is designed to be easy to use and can be customized to meet specific needs.

The Luna 2 is an automated sleep apnea treatment device. It differs from a conventional CPAP device, which maintains a steady pressure setting throughout the night. Devices like the Luna 2 monitor your breathing and adjust the pressure level within the given range. This may lessen the need for visits to the doctor to make pressure adjustments.

When selecting a CPAP, APAP, or BiPAP, it is critical to consult a physician to identify the correct one, as certain medical circumstances (e.g., central sleep apnea) may necessitate a different type of device. In other words, the best CPAP for you! It is beneficial to ask for a machine with more than one setting for pressure or one that is easier to exhale with than a CPAP.



At a lower price than its nearest rivals, the Luna 2 offers just as advanced features. Moreover, it includes the same two-year warranty as other more expensive models. Here are some of the most remarkable features that make the Luna 2 unique:

An Integrated Heated Humidifier

  • A heated humidifier with a built-in feature with a CPAP machine can provide more moisture to the air the user breathes, making it more comfortable for them to use.
  • During allergy season or in colder, drier months, humidification is an often-used comfort setting for CPAP users. Providing moist air can reduce irritation in nasal passages and airways, alleviate congestion, and forestall dry mouth.
  • The LCD display shows small blue bars to indicate the humidification setting, which you can adjust using the control knob. The levels range from 1-5, with the option to turn it off. Heated tubing is not included with the Luna 2 but can be bought separately.

Reslex® Exhalation Pressure Reduction (EPR)

  • A technology developed by React Health formerly know as 3B Medical, to provide comfort to breathing by decreasing the pressure of the exhaled air.

  • The Luna decreases air pressure while users exhale, making breathing more comfortable. You can adjust the Reslex EPR to your preferred level, ranging from 1 to 3, with 1 representing the lowest pressure reduction and 3 the greatest. Alternatively, you can also opt to turn off the feature.

User-Friendly Interface

  • The interface of this system is intuitive, making it easy to use. This user-friendly design allows users to quickly and effectively interact with the system.

  • At the top of the Luna II CPAP machine is situated a 3.5" full-color backlit LCD screen. Navigating settings and viewing the most recent therapy data is convenient with the single dial menu and two buttons. The screen displays compliance hours, average pressure, Apnea-Hypopnea Index, snore index, and leak rate.

  • When selecting your type of mask, you can choose a nasal, nasal pillow, or full face mask from

Auto Start/Stop Feature

  • To start therapy, just put the mask on and start inhaling; to halt it, remove the mask without having to reset the machine when you wake up through the night.

Functioning Silently

  • Sleep therapy technology has evolved, and people using CPAP machines have grown accustomed to operating at a minimal sound level. The Luna 2 is even quieter than a whisper, running at a mere 28 decibels.

Access to Sleep Therapy Information

  • The Luna II Auto PAP lets you stay connected with your healthcare provider by providing wi-fi access to your compliance data. Navigate to the iCode section and select the desired report type to obtain the code, which can open the report using the iCode app on your phone or online. Alternatively, you can also scan the QR code!

Finding Leaks from Masks

  • By running tests to detect any leaks from masks, it is possible to ensure proper airtightness when wearing them. This process of uncovering mask leaks is known as mask leak detection.

  • The Luna has a convenient mask leak alert that can notify you when your CPAP mask begins to leak air. Leak detection is not available on the Dreamstation and similar models. However, these leaks can cause dry mouth and irritation and reduce the air pressure that flows to your airways.

Prolonged Ramp-Up Time

  • Other CPAPs have a limit on RAMP time for 45 minutes. In contrast, the Luna 2 APAP offers up to 60 minutes, with the option to select any length of time in 5-minute intervals, ranging from 5 to 60 minutes.

Configuring the Luna 2 Auto CPAP Device

When you open the box of your 3B Medical Luna II Auto CPAP, you will discover that everything is organized in a neat, padded carrying case. The case has separate sections for each item - the machine with a water chamber, tubing, air filter, user manual, AC power cord, and power adapter - with visual signals to help you identify where each item should go.

To begin, plug the machine into a power source and an outlet. This will cause the LCD screen to light up and show that the device has been turned on. Afterward, place it on a flat surface, like a nightstand, and attach the CPAP tube to the machine's air outlet and CPAP mask.

Strengths and Weaknesses

Though not particularly large, with its integrated humidifier, the Luna II is larger than the popular ResMed AirSense 10. This device measures 10.7"x7.2"x4.5", weighing in at over 4 pounds, while the AirSense 10 is 10"x4.6"x5.9" and significantly lighter at around 3 pounds. The Luna II APAP has no battery option, making it unsuitable for travel.




All and all, The Luna II Auto CPAP is an excellent choice for those mindful of spending. It offers comparable features to more expensive models but is much cheaper. Two other aspects that customers really appreciate are the extended ramp time and the mask leak detection - all at an affordable price.


Find yours at or chat with a sleep expert online today!


Disclaimer: The information provided on is solely for educational purposes and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. is not responsible or liable for any advice, course of treatment, diagnosis or any other information, services or products that you obtain through this site. Reliance on any information provided by is solely at your own risk.