Luna G3 Auto CPAP Machine
The Luna G3 Auto from React Health prioritizes comfort and efficiency—as evidenced by its included heated tubing, PM2.5 air filter, auto-ramp functionality, and accessory and supply reminders. This auto-adjusting positive airway pressure (APAP) device intuitively changes your pressure settings as needed, so you can get a good night’s sleep no matter your pressure needs.
Offers a Small Footprint That Won’t Clutter Your Nightstand
The modem for the G3 Auto is built directly into the machine, helping you save space on your bedside table. This machine weighs less than four pounds, so it’s easy to pack and take with you if you want to use it as a travel CPAP machine.
Great Option for Allergy Sensitivities
If you struggle with seasonal allergies, dust, or pet dander, the Luna G3 APAP comes with a hypoallergenic PM2.5 filter, which is one of the most efficient and highest-arresting air filters of any CPAP machine! Coupled with the included heated tubing, the Luna G3 provides some of the cleanest and most consistently-heated therapy air available.
Includes Comfort Controls to Preheat Your Humidifier and Help Prevent Rainout
With a simple tap of the screen, enhance your comfort with the integrated preheat setting, which is designed to warm your humidifier before you jump into bed. This device is outfitted with AutoHumidity control as well thanks to the included heated hose, which will help prevent rainout even if you select the highest moisture level.
Sleep Peacefully While the Auto Ramp Feature Makes Any Necessary Adjustments
The auto ramp function on the G3 senses when you are about to fall asleep and adjusts the pressure accordingly. As you sleep, the G3 makes adjustments to your pressure settings if changes in airflow are detected. The ramp time for this machine ranges from 0 to 60 minutes to help you gradually reach your pressure settings and fall asleep with ease.
Quiet Operation Won’t Disturb You or Your Partner
When working at a pressure of 10 cmH2O, the G3 APAP Machine operates at less than 28 decibels—which is quieter than a whisper.
Provides Easy-to-Access Reports and Supply Reorder Reminders
Equipped with a user-friendly screen that gives you easy access to your personal CPAP settings and nightly sleep reports, this device can help limit the frequency of your doctor check-ins. When in standby mode, the modern interface displays the time, temperature, and humidity level, so you can check in on your settings with a quick glance. Considered a newer feature, the G3 APAP Machine also lets you know when you should replace your air filter or mask to ensure you have the most up-to-date and highest-performing equipment.
Tracks and Stores Data for You and Your Doctor
You can use your Wi-Fi to store and send your sleep apnea therapy progress from an SD card or smartphone, making it a breeze for your doctor to learn if your pressure prescription is adequate or if you could benefit from an adjustment.
Luna G3 Auto CPAP Machine
This product requires a prescription.
Learn moreShips same day if ordered before 4 PM CST
Free shipping on orders over $99
100% price match guarantee
FSA/HSA eligible
The Luna G3 Auto from React Health prioritizes comfort and efficiency—as evidenced by its included heated tubing, PM2.5 air filter, auto-ramp functionality, and accessory and supply reminders. This auto-adjusting positive airway pressure (APAP) device intuitively changes your pressure settings as needed, so you can get a good night’s sleep no matter your pressure needs.
Offers a Small Footprint That Won’t Clutter Your Nightstand
The modem for the G3 Auto is built directly into the machine, helping you save space on your bedside table. This machine weighs less than four pounds, so it’s easy to pack and take with you if you want to use it as a travel CPAP machine.
Great Option for Allergy Sensitivities
If you struggle with seasonal allergies, dust, or pet dander, the Luna G3 APAP comes with a hypoallergenic PM2.5 filter, which is one of the most efficient and highest-arresting air filters of any CPAP machine! Coupled with the included heated tubing, the Luna G3 provides some of the cleanest and most consistently-heated therapy air available.
Includes Comfort Controls to Preheat Your Humidifier and Help Prevent Rainout
With a simple tap of the screen, enhance your comfort with the integrated preheat setting, which is designed to warm your humidifier before you jump into bed. This device is outfitted with AutoHumidity control as well thanks to the included heated hose, which will help prevent rainout even if you select the highest moisture level.
Sleep Peacefully While the Auto Ramp Feature Makes Any Necessary Adjustments
The auto ramp function on the G3 senses when you are about to fall asleep and adjusts the pressure accordingly. As you sleep, the G3 makes adjustments to your pressure settings if changes in airflow are detected. The ramp time for this machine ranges from 0 to 60 minutes to help you gradually reach your pressure settings and fall asleep with ease.
Quiet Operation Won’t Disturb You or Your Partner
When working at a pressure of 10 cmH2O, the G3 APAP Machine operates at less than 28 decibels—which is quieter than a whisper.
Provides Easy-to-Access Reports and Supply Reorder Reminders
Equipped with a user-friendly screen that gives you easy access to your personal CPAP settings and nightly sleep reports, this device can help limit the frequency of your doctor check-ins. When in standby mode, the modern interface displays the time, temperature, and humidity level, so you can check in on your settings with a quick glance. Considered a newer feature, the G3 APAP Machine also lets you know when you should replace your air filter or mask to ensure you have the most up-to-date and highest-performing equipment.
Tracks and Stores Data for You and Your Doctor
You can use your Wi-Fi to store and send your sleep apnea therapy progress from an SD card or smartphone, making it a breeze for your doctor to learn if your pressure prescription is adequate or if you could benefit from an adjustment.
3B Medical Luna G3 Auto Machine With Heated Humidifier
Prescription Required
Federal law requires us to have a valid prescription on file before we ship your CPAP mask, machine, humidifier, oral appliance, or EPAP device. Once we receive your script, we will be able to process your order. You will have an opportunity to submit your prescription during the checkout process.This documentation can be submitted in the following ways:
- Email us a photo of your prescription
- Fax us a copy of your script
- Let us contact your doctor for you
Don’t have your prescription? No problem! We’re here to simplify your sleep apnea journey. cpap.com is proud to offer prescription renewal services or at-home sleep apnea testing.
CPAP Prescription Renewal Service
Home Sleep Apnea Test
AirFit P10 Nasal Pillow Mask
AirFit F20 Full Face Mask
AirFit N20 Nasal Mask
ComfortGel Blue Nasal CPAP Mask
AirFit N30i Nasal Mask
AirTouch F20 Full Face CPAP Mask
AirFit P30i Nasal Pillow CPAP Mask
ResMed Swift FX Nasal Pillow CPAP Mask with Headgear
Mirage Quattro Full Face CPAP Mask
DreamWear Nasal CPAP Mask with Headgear
AirFit F30i Full Face Mask
Amara View Full Face CPAP Mask with Headgear
Mirage FX Nasal CPAP Mask
AirFit F10 Full Face Mask
ResMed AirTouch N20 Nasal CPAP Mask with Headgear
Fisher & Paykel Simplus Full Face CPAP Mask
Philips Respironics Wisp Nasal CPAP Mask
ResMed AirFit F30 Full Face CPAP Mask
Nuance & Nuance Pro Nasal Pillow CPAP Mask with Gel Nasal Pillows
Brevida Nasal Pillow CPAP Mask
Mirage Activa LT Nasal CPAP Mask
ResMed Quattro FX Full Face CPAP Mask
DreamWear Full Face CPAP Mask with Headgear
TAP PAP Nasal Pillow CPAP Mask with Improved Stability Mouthpiece
ResMed AirFit N30 Nasal CPAP Mask
FitLife Total Face CPAP Mask with Headgear
Quattro Air Full Face Mask
ResMed AirFit F40 Full Face CPAP Mask with Headgear
Fisher & Paykel Vitera Full Face Mask
Evora Full Face Mask with Headgear
AirMini Mask Setup Pack with AirFit N30 Nasal CPAP Mask
Hybrid Full Face CPAP Mask with Nasal Pillows and Headgear
SleepWeaver Advance Nasal CPAP Mask with Improved Zzzephyr Seal
Swift FX Nasal Pillow CPAP Mask Assembly Kit
SleepWeaver Elan Soft Cloth Nasal CPAP Mask
Fisher & Paykel Evora Nasal CPAP Mask with Headgear
DreamWisp Nasal CPAP Mask
Oracle HC452 Oral CPAP Mask
Eson Nasal CPAP Mask
FlexiFit HC407 Nasal CPAP Mask
AirMini Mask Setup Pack with AirFit P10 Nasal Pillow CPAP Mask
Fisher & Paykel Solo Nasal Mask
Opus 360 Nasal Pillow CPAP Mask
Bleep DreamPort CPAP Mask Solution
Eson 2 Nasal CPAP Mask
AirTouch N30i Nasal CPAP Mask
FlexiFit HC431 Full Face CPAP Mask
FlexiFit HC432 Full Face CPAP Mask
Simplus Full Face Mask + 2 Cushions
Amara Full Face CPAP Mask with Headgear
This product requires a prescription. Learn More
-  
-  
Details
MoreThe Luna G3 Auto from React Health prioritizes comfort and efficiency—as evidenced by its included heated tubing, PM2.5 air filter, auto-ramp functionality, and accessory and supply reminders. This auto-adjusting positive airway pressure (APAP) device intuitively changes your pressure settings as needed, so you can get a good night’s sleep no matter your pressure needs.
Offers a Small Footprint That Won’t Clutter Your Nightstand
The modem for the G3 Auto is built directly into the machine, helping you save space on your bedside table. This machine weighs less than four pounds, so it’s easy to pack and take with you if you want to use it as a travel CPAP machine.
Great Option for Allergy Sensitivities
If you struggle with seasonal allergies, dust, or pet dander, the Luna G3 APAP comes with a hypoallergenic PM2.5 filter, which is one of the most efficient and highest-arresting air filters of any CPAP machine! Coupled with the included heated tubing, the Luna G3 provides some of the cleanest and most consistently-heated therapy air available.
Includes Comfort Controls to Preheat Your Humidifier and Help Prevent Rainout
With a simple tap of the screen, enhance your comfort with the integrated preheat setting, which is designed to warm your humidifier before you jump into bed. This device is outfitted with AutoHumidity control as well thanks to the included heated hose, which will help prevent rainout even if you select the highest moisture level.
Sleep Peacefully While the Auto Ramp Feature Makes Any Necessary Adjustments
The auto ramp function on the G3 senses when you are about to fall asleep and adjusts the pressure accordingly. As you sleep, the G3 makes adjustments to your pressure settings if changes in airflow are detected. The ramp time for this machine ranges from 0 to 60 minutes to help you gradually reach your pressure settings and fall asleep with ease.
Quiet Operation Won’t Disturb You or Your Partner
When working at a pressure of 10 cmH2O, the G3 APAP Machine operates at less than 28 decibels—which is quieter than a whisper.
Provides Easy-to-Access Reports and Supply Reorder Reminders
Equipped with a user-friendly screen that gives you easy access to your personal CPAP settings and nightly sleep reports, this device can help limit the frequency of your doctor check-ins. When in standby mode, the modern interface displays the time, temperature, and humidity level, so you can check in on your settings with a quick glance. Considered a newer feature, the G3 APAP Machine also lets you know when you should replace your air filter or mask to ensure you have the most up-to-date and highest-performing equipment.
Tracks and Stores Data for You and Your Doctor
You can use your Wi-Fi to store and send your sleep apnea therapy progress from an SD card or smartphone, making it a breeze for your doctor to learn if your pressure prescription is adequate or if you could benefit from an adjustment.
Specs
More26 dBA
10.4 x 5.7 x 4.5
3.75
N/A
100V - 240V ~, 50Hz / 60 Hz, 2 A
N/A
4
20
N/A
Yes
Integrated
Yes
Yes
Yes
N/A
N/A
N/A
N/A
N/A
N/A
Yes
No
Yes
Yes
No
LG3600
Tips & Resources
MoreOur Product Review: Luna G3 Auto CPAP Review
Product Manual: Luna G3 Auto CPAP User Manual
Using Your Machine for the First Time
When your machine first arrives, there is no need to set the therapy pressure, as this was done before we shipped it to you. To prepare your machine for the first use:
- Insert air filter
- Connect the hose to the machine and your mask, ensuring the connections are tight on both
- Connect power cord to your machine
- Insert SD card
- Fill water tank
- Plug power cord into the wall outlet or battery
- Put on mask and adjust headgear as needed
- Turn out machine and begin therapy
Luna G3 Series App Compatibility
Every night your machine will generate a QR code, which will appear on the machine's display screen. When scanned with the 3B Luna QR App, available for Apple (App Store) and Android (Google Play), it will generate a report for your last therapy session.
FAA/TSA Compliance
- Your CPAP equipment is considered a necessary medical device
- Federal law allows you to take this machine on any aircraft when flying domestically within the United States
- It’s best to carry your device onto the plane to minimize the risk of damage during flight
- CPAP machines cannot legally be counted against you as a carry-on item while flying domestically
- Contact the airline a few days before your flight if you plan to use your machine on the plane
- If using in-flight, put the device in “Airplane Mode”
Water Chamber Tips
- Do not fill the water chamber above the maximum fill line
- Use only room-temperature distilled water
- Do not put any chemicals or additives into your CPAP water
- Always empty water tank before transporting your machine
- Do not turn the humidifier on without the water tank installed
Hose Tips
- Disconnect the hose and hang it to dry after each use
- Machine must be adjusted to the proper tube setting to ensure accurate therapy pressure
- Auto Climate Control feature only functions while connected to heated tubing
Care & Cleaning
MoreCare & Cleaning Notice
The following information includes recommended instructions for the general care and maintenance of our sleep therapy machines. Please review your machine's product manual for further details.
Machine Part Replacement Schedule
- Disposable Filter: Every 2-4 Weeks
- Reusable Filter: Every 3-6 Months
- Hose: Every 3-6 Months
- Water Chamber: Every 6 Months
- CPAP Machine: Every 5 Years
Daily Cleaning & Maintenance
- Empty the water chamber and detach machine hose
- Rinse each thoroughly in warm water
- Wipe the tank with a clean disposable cloth or CPAP wipe
- Allow the tank to air dry fully
- Hang hose to drip dry
- Keep away from direct sunlight or excess heat
Weekly Cleaning
- Wash the water chamber and hose in warm water with mild soap
- Rinse thoroughly to remove all remaining soap
- Allow water chamber and hose to sit in a solution of 2 parts distilled vinegar and 3 parts warm water
- Rinse with warm water
- Allow water chamber to air dry fully
- Hang hose to drip dry fully
- Wipe the exterior of the device with a dry cloth
What's Included
MoreThis machine includes air tubing. However, your CPAP mask must be purchased separately.
Replacement Parts
MoreFAQs
MoreIs the Luna G3 an APAP or a CPAP machine?
The Luna G3 Auto CPAP offers two modes of sleep therapy, auto adjusting (also known as Auto CPAP or APAP) and traditional CPAP. Our team will set your machine to the correct mode as prescribed by your doctor.
Does the Luna G3 Auto CPAP have an app?
Luna G3 Series devices pair with the 3B Luna QR APP, available through Google Play or the App Store. This app allows you to track your therapy progress over time.
How quiet is the Luna G3 Auto during operation?
The Luna G3 Auto CPAP machine produces just 26 decibels of noise, making it quieter than a whisper or the sound of rustling leaves.
Fast, free shipping on orders over $99
Get the best price with our 100% Price Protection Guarantee
Discounted replacements with Subscribe & Save
Try any CPAP mask for 30 days, risk-free