The Luna G3 Auto CPAP Machine is one of the most popular devices from React Health, formerly known as 3B Medical Inc. This auto-CPAP device automatically adjusts the air pressure by monitoring your breathing patterns for sleep apnea events.
It also offers many premium features aimed at providing a more comfortable CPAP experience, including a built-in humidifier, integrated heated tubing, and a preheat function. The machine also has an automatic ramp setting that gradually increases the pressure, allowing you to ease into therapy.
Below, we’ll explain more about its features, performance, technical specifications, and who might be a good fit for the device.
At a Glance
The Luna G3 Auto CPAP Machine is a compact, easy-to-use device that delivers consistent sleep apnea therapy with comfort features like a built-in heated humidifier, ramp settings, and exhalation relief.
Ideal For
- People seeking a preheat function
- Individuals who want to prevent hose and mask condensation
- Those looking for an easy-to-use interface that has resupply reminders
Who should keep looking
- Individuals who need APAP or BiPAP functionality
- People who don’t need CPAP humidification
- Those who prefer a touchscreen interface
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Price
$849
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Dimensions
10.4″ x 5.7″ x 4.5″
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Noise Rating
26 dBA
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Weight
3.75 lbs.
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Warranty
2 years
Use this SleepApnea.org link for the most current discount on the Luna G3 Auto CPAP
Shop NowOur Luna G3 Auto CPAP Machine Review
Most CPAP machines measure pressure in centimeters of water pressure (cm H2O). The Luna G3 Auto CPAP Machine has a 4 to 20 cm H2O range, which can be set in increments of 0.5 cm H2O. The device also has integrated heated tubing and a built-in humidifier with a preheat function that helps moisturize the air. These elements are designed to help prevent hose and mask condensation and reduce potential side effects such as dry mouth and dry nasal passages.
Another selling point of the Luna G3 is its ramp feature. The machine starts with lower pressure and gradually increases it to the prescribed pressure level to ease the user into their nightly therapy.
Like all PAP devices, purchasing the Luna G3 Auto CPAP Machine requires a prescription. Speak with your doctor if you think the device is right for you.
What's Included
The Luna G3 Auto CPAP Machine includes a built-in humidifier and heated tubing. You’ll also receive a filter and a power cord and adapter. CPAP masks are sold separately and also require a doctor’s prescription.
- Auto CPAP machine
- Power cord
- Power adapter
- Air filter
- Heated connective tubing
Notable Features
The Luna G3 Auto CPAP Machine has several features aimed at making the treatment of OSA more comfortable and user-friendly. These include adjustable ramp settings, humidity controls, heating options, and an easy-to-use interface.
- Adjustable ramp setting: The ramp feature allows you to start therapy at a lower pressure setting and slowly build to your prescribed pressure over a period of time you set. Many CPAP users find this gradual pressure buildup less jarring. The time period is customizable up to a maximum of 60 minutes.
- Humidity controls: The built-in humidifier helps to reduce nasal dryness and irritation by adding moisture to the pressurized air. There are five humidity levels available.
- Heating options: The preheat function enables you to warm the water in the humidifier tank for up to 30 minutes before use. The integrated heated tubing helps to prevent condensation from forming in the tubing and mask.
- LCD interface: The digital interface has an LCD screen and a single control knob to navigate the machine settings. You can view sleep data, such as your nightly usage score, and transmit that information to your doctor. Additionally, the machine provides replacement reminders for the air filter, connective hose, and face mask.
Size and Cost
Measuring 10.4 inches across by 5.7 inches deep and 4.5 inches tall, the Luna G3 Auto CPAP Machine is compact enough to fit on most nightstands. The humidifier’s water chamber holds a maximum of approximately 12 fluid ounces.
Weighing in at about 3.75 pounds, the device is comparable to other CPAP machines with built-in humidifiers. While it’s heavier and bulkier than most travel CPAP machines, it’s still small enough that it won’t take up too much space in a suitcase.
The price of the Luna G3 Auto CPAP Machine is on par with other CPAP-only models with built-in humidification systems.
- Dimensions: 10.4″ x 5.7″ x 4.5″
- Weight: 3.75 lbs.
- Price: $849
Customer Reviews
Overall, most individuals who own the Luna G3 Auto CPAP Machine like the product. Common positive comments are that the machine is quiet, easy to set up, and gathers good sleep data.
The three primary negative complaints are that some of the functions are not explained well in the manual, the water chamber design doesn’t allow for easy cleaning, and the machine only transmits 30 days of data.
Trial, Warranty, and Shipping Policies
| Availability | The Luna G3 Auto CPAP Machine is available from select authorized CPAP machine retailers. Before buying the device, you’ll need a prescription from your doctor. |
| Shipping | The available shipping locations, delivery timeframe, and shipping costs vary by seller. Many retailers offer free shipping within the contiguous U.S. Some assembly is required after the device arrives. The user manual has step-by-step assembly instructions. |
| Sleep Trial | Each seller has a specific return policy. Some allow the device to be returned within a certain period, while others don’t allow any returns. In general, used CPAP machines are not eligible for return since they are considered medical devices. |
| Warranty | The Luna G3 Auto CPAP Machine has a two-year manufacturer’s warranty that covers the repair or replacement of a defective device. While most sellers follow the manufacturer’s warranty, not all do, so be sure to check the fine print before purchasing. |
Other Models in the Luna G3 Series
- Luna G3X Auto CPAP Machine: The Luna G3X Auto CPAP Machine is newest PAP device from React health that delivers reliable, auto-adjusting sleep apnea therapy with comfort features like a heated humidifier and exhalation relief for easier breathing.
- Luna G3 BiPAP 25A Machine: The Luna G3 BiPAP 25A Machine provides bilevel therapy with separate pressures for inhaling and exhaling, offering a more comfortable option for users who need higher pressure support or have difficulty tolerating CPAP.
- Luna TravelPAP: The Luna TravelPAP is a compact, travel-friendly CPAP machine that delivers auto-adjusting therapy in a lightweight design, making it easy to maintain treatment while on the go.
Frequently Asked Questions
The LCD screen and single-knob operation make the Luna G3 user-friendly. The ability to program preheat settings and the ramp function add to the overall user experience.
The Luna G3 is designed to be compatible with almost any CPAP mask. The device’s connective tubing works whether you prefer a full-face, nasal, or nasal pillow mask.
The pressure settings for the Luna G3 span from 4 to 20 cm H2O, which is the standard range for most CPAP machines. The pressure can be increased in 0.5 cm H2O increments.
The sound level of the Luna G3 Auto CPAP Machine is around 26 decibels when the pressure is set at 10 cm H2O. This makes it quieter than most CPAP machines, which have an average sound level of 30 decibels.
The ability to preheat the water in the humidifier tank and the heated tubing keeps the air warm, which makes breathing easier for many CPAP users. The Luna G3 features an AutoHumidity option that adjusts the humidity levels based on the room climate. Keeping the humidity at the right level helps prevent rainout, which is when condensation builds up inside the mask and tubing.
According to the manufacturer, the Luna G3’s tubing and water chamber should be cleaned daily. Use distilled water to fill the water chamber after it’s been washed and dried. Other accessories, including the mask, should also be cleaned daily per manufacturer instructions.
The machine’s cleanable components and other accessories should be washed with warm water and mild soap. Typically, the filter needs to be replaced every six months. Store the machine and its accessories out of direct sunlight.
While the Luna G3 Auto CPAP Machine wasn’t created specifically for travel, it’s still relatively small and light and should fit in most carry-on bags. The water chamber can be removed before traveling to make the machine more compact. However, travelers should note that this model is not approved by the Federal Aviation Administration for in-flight use.
Still have questions?
Sleep apnea products can be confusing. If you need individualized assistance, post your question to the Sleep Doctor forum.
Written by
Ashley Wood, RN, Contributing WriterAshley is a registered nurse with over 15 years of experience and holds a bachelor’s degree in nursing. It's no surprise she likes writing about health information that encourages and enables others to live their healthiest life possible. Ashley enjoys spending time with her family, reading, hiking, and photography during her free time.
Reviewed by
Sherrie Neustein, MD, FAAP, Medical ReviewerDr. Sherrie Neustein is a board-certified pediatrician and Fellow of the American Academy of Pediatrics with more than 15 years of clinical experience caring for children and families. Her work focuses on promoting healthy development and overall wellness, including the important role sleep plays in children’s physical, cognitive, and emotional health.
