3b medical luna G3 auto cpap machine side view

3B Medical Luna G3 Auto CPAP Machine Review

Designed to be more user-friendly, the 3B Medical Luna G3 Auto CPAP Machine makes CPAP efficient and effective for every user. New features include a built-in algorithm take the guesswork out of CPAP machine adjustment. The AutoRamp and integrated heated tubing are added benefits that provide comfort along with ease of use. This device is lightweight, weighing only 3.75 pounds, perfect to place on a nightstand or to take around the house.

Key Features of 3B Medical Luna G3 Auto CPAP

  • Reduced footprint makes this machine easy to place on small areas such as nightstands.
  • The pre-heat feature lets you warm up your humidifier water ahead of time while you get ready for bed.
  • Integrated heated tubing keeps air flow warm and moist and prevents rainout condensation.
  • Quick and easy data transfer lets you send sleep data to your doctor or store it in the cloud.

Highlights of Luna G3 Auto CPAP

The Auto-CPAP machine has Wi-Fi, which allows you to easily save and transfer sleep data to your doctor. This feature makes it simple to share your sleep data with your doctor and receive an updated prescription for pressure-setting modifications as needed. This also limits frequent trips to the doctor. Having sleep reports directly on your device is also beneficial for users so they, too, can track how they are sleeping and notice any hiccups in their progress on their own.

This device also includes a built-in humidification system to help provide even more comfort during therapy. The humidifier works to provide warm, moisturized air to make breathing easier and more comfortable. The use of warm air eliminates rainout, which can leave a user's face feeling damp. Patients can start heating up the water in the humidifier chamber ahead of time so it is ready to go when they are.

Users can also enjoy a practically noise-free therapy every night when using this machine. Even at the highest pressure setting, this machine operates at 26 dBa, which is ultra-quiet, even less than a whisper. This provides a peaceful sleeping environment for both a user and their bed partner.

3B Medical Luna G3 Auto CPAP - Technology Features

The built-in algorithm determines how much pressure is needed for inhalation with each breath you take. This means that APAP machines can automatically adjust to each unique individual’s sleeping and breathing needs, which can change very frequently throughout the night as users change the sleep stage they are in.

3B Medical Luna G3 Auto CPAP - Specifications

  • Machine Pressure: 4 to 20 cmH2O (in 0.5 cmH2O increments)
  • Sound Level: 26 dBA
  • Dimensions - Machine with Humidifier:  (L x W x H): 265 mm × 145 mm × 114 mm
  • Weight - Machine with Humidifier: 3.75lbs
  • Ramp:   Yes
  • Heated Hose Option: Yes
  • Battery Option: Yes
  • Exhalation Relief: Yes
  • Auto Start: Yes
  • Auto Stop: Yes

The Pros and Cons of the 3B Medical Luna G3 Auto CPAP

Pros of 3B Medical Luna G3 Auto CPAP

  • AutoRamp
  • Heated tubing
  • Automatic altitude compensation

Cons of 3B Medical Luna G3 Auto CPAP

  • No leak compensation
  • Not FAA compliant

Comparing The Luna G3 CPAP With Its CPAP Competitors

Product Name3B Medical Luna G3 Auto CPAPAirSense 11 AutoSet CPAP3B Medical Luna II CPAP
Best FeaturesLow noise
Auto ramp
Smaller footprint
Built-in heated humidifier
Care Check service
Advanced event detection  
Integrated, dual-chamber heated humidifier 
Extended ramp time of 60 minutes
Expiratory pressure relief  
DisadvantagesNo leak compensation
Not FAA compliant
Not DC power compatible
No leak compensation
Not DC power compatible
More expensive  
Not auto-adjusting
Not FAA compliant
Heavier unit

3B Medical Luna G3 Auto CPAP – Price

The device currently retails for $825.00.

3B Medical Luna G3 Auto CPAP - Warranty 

This machine is available with a two-year warranty from the manufacturer for performance defects. The warranty protection ensures reliable operation of the auto CPAP for a reasonable period of use.

Where Can I Buy the 3B Medical Luna G3 Auto CPAP Machine?

You can buy this machine from the comfort of your home online at The CPAP Shop. Our knowledgeable staff can answer all your questions about the 3B Medical Luna G3 Auto CPAP machine. Give us a call at 866-414-9700.

This post was originally posted on July 11, 2022 and updated on December 14, 2023. 

Chris Vasta

Chris Vasta is the president of The CPAP Shop and an expert in sleep and respiratory therapy. He often provides insights on product design and functionality on various manufacturers’ prototypes and is frequently tapped to provide reviews on new releases.