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Front angled view of 3B Luna G3 CPAP machine
  • Front angled view of 3B Luna G3 CPAP machine
  • Left front angled view of 3B Luna G3 CPAP machine
  • Infographic of React Health Luna G3 Auto CPAP features: auto-adjusting pressure, humidifier moisture, simple controls
  • Five star customer review card next to React Health Luna G3 Auto CPAP machine with color screen
  • Closeup view of 3B Luna G3 CPAP machine with water chamber refilled
  • React Health Luna G3 Auto CPAP machine with heated humidifier on a wooden nightstand beside a bed
  • cpap mask machine compatibility
  • Angled view of 3B Luna G3 CPAP machine with water chamber removed
  • Front angled view of 3B Luna G3 CPAP machine
  • Left front angled view of 3B Luna G3 CPAP machine
  • Infographic of React Health Luna G3 Auto CPAP features: auto-adjusting pressure, humidifier moisture, simple controls
  • Five star customer review card next to React Health Luna G3 Auto CPAP machine with color screen
  • Closeup view of 3B Luna G3 CPAP machine with water chamber refilled
  • React Health Luna G3 Auto CPAP machine with heated humidifier on a wooden nightstand beside a bed
  • cpap mask machine compatibility
  • Angled view of 3B Luna G3 CPAP machine with water chamber removed
React Health Luna G3 Auto CPAP Machine with Heated Humidifier
React Health | SKU:
LG3600

React Health Luna G3 Auto CPAP Machine with Heated Humidifier

$754.00
Front angled view of 3B Luna G3 CPAP machine
  • Front angled view of 3B Luna G3 CPAP machine
  • Left front angled view of 3B Luna G3 CPAP machine
  • Infographic of React Health Luna G3 Auto CPAP features: auto-adjusting pressure, humidifier moisture, simple controls
  • Five star customer review card next to React Health Luna G3 Auto CPAP machine with color screen
  • Closeup view of 3B Luna G3 CPAP machine with water chamber refilled
  • React Health Luna G3 Auto CPAP machine with heated humidifier on a wooden nightstand beside a bed
  • cpap mask machine compatibility
  • Angled view of 3B Luna G3 CPAP machine with water chamber removed
In stock - Same Day Shipping for orders placed by 2PM EST.
Model Type

Product Specifications

Manufacturer React Health (formerly 3B Medical)
Model LG3600 (Luna G3 Auto-CPAP)
Therapy Modes CPAP and Auto-CPAP (APAP)
Pressure Range 4 to 20 cm H2O, in 0.5 cm increments
Ramp 0 to 60 minutes, starts low and rises to your set pressure
Exhalation Relief RESlex pressure relief on exhalation (Off, 1, 2, 3)
Leak Compensation Yes, with an audible high-leak alert
Auto On / Auto Off Yes, starts when you breathe in and stops when the mask is removed
Humidifier Integrated heated humidifier with pre-heat function
Water Chamber Capacity 360 mL to the maximum fill line
Humidity Levels Off, Auto, and 1 to 5
Heated Tubing Standard and integrated, with 5 heat levels
Tubing 6 ft (1.83 m), 19 mm inner diameter, 22 mm connector
Dimensions 10.4 x 5.7 x 4.5 in (265 x 145 x 114 mm)
Weight 3.75 lbs (1.7 kg)
Display 3.5-inch full-color LCD with control knob
Sound Level 28 dBA at 10 cm H2O
Power AC input 100 to 240V, 50/60 Hz, 2 A max
Battery Operation Not supported (AC powered)
Filters Reusable filter, plus an optional disposable ultra-fine (PM2.5) filter
Data Retrieval Onboard SD card, on-screen iCode, and QR code with the React Health Luna QR app
Cloud Platform iCodeConnect for compliance and therapy data
Wi-Fi and Cellular Optional add-on modules (additional fees may apply)
On-Screen Resupply Reminder Yes
FDA Status 510(k) cleared
Device Classification Class II, Type BF applied part, IP22
HCPCS Billing Code E0601
Air Travel Meets FAA requirements (RTCA DO-160)
Prescription Required (Rx) in the United States
In the Box Luna G3 Auto machine with integrated heated humidifier and water chamber, integrated heated tubing, standard tubing, disposable air filter and a PM2.5 fine filter, power supply and AC cord, SD card, travel bag, and user manual. Mask sold separately.
Warranty 2-year manufacturer warranty on the device; 3 months on accessories
Expected Service Life 5 years
Replacement Schedule Water chamber and tubing about every 6 months; disposable ultra-fine filter about every 2 weeks; clean the reusable filter weekly

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1-844-451-6555

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Overview

The React Health Luna G3 Auto CPAP (model LG3600) is an auto-adjusting APAP machine with a built-in heated humidifier, designed to make sleep apnea therapy comfortable and simple. Instead of a single fixed pressure, it automatically adjusts within the pressure range your physician sets, responding to your breathing all night.

It includes RESlex exhalation relief, AutoRamp for a gentle start, a quiet motor, and therapy data through the onboard SD card and the React Health Luna QR app.

Guide and Resources

Luna G3 CPAP User Manual
Luna G3 Size Guide
CPAP Machine Buying Guide
Returns Policy

Important Tips

  • Use the preheat function to warm the humidifier water before starting therapy for added comfort, especially in cooler environments.
  • Adjust Auto Humidity Control to find the moisture level that prevents dryness without causing rainout in the tubing.
  • Set up Auto Ramp to start at a lower pressure and gradually increase once you're asleep, making it easier to fall asleep with therapy.
  • Clean the water chamber and tubing regularly with mild soap and warm water to prevent buildup and maintain hygiene.
  • Replace air filters monthly or sooner if they appear dirty to ensure clean airflow and optimal machine performance.
  • Keep the Luna G3 on a stable, flat surface and away from objects that might block airflow for quiet operation.
  • Monitor therapy data via SD card and share it with your healthcare provider to adjust therapy as needed.
  • Store the device in a cool, dry place, away from direct sunlight and moisture, to extend its lifespan.
  • Check tubing and connections for leaks or wear to ensure proper therapy delivery.
  • Use distilled water in the humidifier to prevent mineral buildup and prolong the life of the water chamber.

What’s Included

Here are the items included with your machine.

Machine

Machine

Tubing

Tubing

Filters

Filters

Humidifier

Humidifier

Travel Bag

Travel Bag

User Guide

User Guide

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Limited Time Offer! -
Just $99.00 $199 SAVE $100
  • We'll start by sending you an easy at-home sleep test
  • A doctor reviews your results and issues a prescription
  • We ship your machine!

Completely risk-free. If your test comes back negative, we'll automatically refund the full cost of the machine.

The React Health Luna G3 Auto CPAP (model LG3600) is an auto-adjusting APAP machine with a built-in heated humidifier, designed to make sleep apnea therapy comfortable and simple. Instead of a single fixed pressure, it automatically adjusts within the pressure range your physician sets, responding to your breathing all night.

It includes RESlex exhalation relief, AutoRamp for a gentle start, a quiet motor, and therapy data through the onboard SD card and the React Health Luna QR app.

See Product Details
Front angled view of 3B Luna G3 CPAP machine

React Health Luna G3 Auto CPAP Machine with Heated Humidifier

$754.00
$754.00

Overall rating: 4.5 / 5 from 12 reviews.

AI Generated Review Summary

Summary topics

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Review highlights

Reviews

Product Defective

"Excited to get new cpap and try ot out then find out first night after three hours cpap will not start back up after going to bathroom needs long cool down was hoping it was just weird incident played with more settings and same thing second night. I got approved to send back the unit for repair/ replacement but no idea how long will be without cpap machine. Pay for expensive medical equipment that does not work with no idea when get to really tryout the machine to see if I will like it"

— Keith S. (1/5)

The CPAP machine you not only need but want!

"So after 46 years of being able to sleep easily and blissfully anywhere, I have developed sleep apnea. Much to my husbands dismay that apparently comes with the most atrocious snoring as well. So when I told him that I’d have to get a CPAP, he was a bit leery. On top of that my insurance did t cover buying, only renting which over two years would easily cost more than $1k to me and I’d be continuing down the renting road on and on for probably the rest of my life. So I decided to look into buying it myself and since the warranty alone was for two years, if I was a good shopper and cared well for the device, might save a bit of money. So by some miracle I found what I needed here and n Sleeplay at incredibly good prices comparably. Shipping was fast and the device has the benefit of being new, not a second hand device. When it arrived my husband just sadly stared at it thinking this little thing would be noisy and compound with my snoring. Setup was easy and the use was simple. It has a handy app to track your statistics. After the first night my husband was overjoyed. The machine was blissfully quiet and it also quieted my snoring. Even though I probably won’t have to for quite a while. I would buy this again and again and definitely from this company."

— LINDSAY O. (5/5)

Excelente

"Excelente"

— Marcos L. (5/5)

It does what it is supposed to do.

"I bought this machine as a backup in case my other CPAP doesn't work for whatever reason or when I travel. Overall it is a good quality machine. It is just a tad bit noisier than my other CPAP which is a ResMed Airsense10 but doesn't affect me as far as being able to fall asleep throughout the night. I really like the functionality of the water chamber being that I don't have to remove it in order to add water when needed. The QR code function also is very easy to understand and helpful in order to understand your own results on a daily basis. I also like the fact that they include heated tubing with this machine compared to some other machines that don't. The minor complaints I have are in order to completely power off the system you need to disconnect the cord from the machine unlike my ResMed where you can hold the power button down and it will just power off. Lastly the heated tubing is somewhat tedious when trying to connect it to your mask and on the back of the machine compared to my ResMed machine. These are only minor setbacks so because of that I will be keeping the machine."

— Michael W. (4/5)

I am still getting used

"I am still getting used to the machine. At times it is so loud that I have to turn it off."

— Cynthia B. (4/5)

Luna G3 Cpap

"At first I had a hard time with too much moisture in mask. It would run down face from underneath edge. I lowered the humidity to a one and now everything is great. I love the easy fill water reservoir and I think that’s my favorite feature. It’s a great machine"

— Ruth B. (5/5)

5 Stars

"No issues so far and it's really quiet! Sleeplay has been so helpful"

— Rose S. (5/5)

5 Stars

"Sleeplay has this at a great price and it's such a good machine. Doesn't use up too much water but keeps my air nice and humidified all night!"

— Margaret G. (5/5)

5 Stars

"i received this machine so fast! The customer service was great and the team at Sleeplay set up all of my machines for me with no issue. This machine works like a charm"

— Janeen T. (5/5)

5 Stars

"This machine is fantastic! No-nonsense and it has me sleeping like a baby every night"

— Crystal R. (5/5)

Q&A

Product Features
Replacement Parts
Reviews
Expert Tips
FAQs

Everything you need to know about the Luna G3

Compact and Lightweight
At under 4 lbs, the design is modern and lightweight perfect for home or travel.

Advanced Comfort Features
Adjust humidification levels and comfort settings with a user-friendly interface, controlling features and data at a glance.

Ultra Quiet Operation
Minimize sleep disruptions and easily adjust to CPAP therapy with a more relaxed and comfortable environment.
React Health Luna G3 Auto CPAP Machine with Heated Humidifier

Climate Control and Pre-Heating Capabilities

Enjoy the convenience of a built-in heated humidifier, and get humidification as soon as you go to bed.

Store and Send Therapy Data

Monitor your CPAP therapy and track compliance with access to your sleep data through the SD card and the React Health Luna QR app.

Even Better Filtration

Ensure proper air quality and prevent bacteria and viruses from entering the CPAP machine with an optional PM 2.5 filter, which is more effective than standard filters.

Intuitive Navigation Display

Adjust settings, monitor your therapy, and access essential information with large buttons and an easy-to-use click dial.

Personalized Comfort Settings

Tailor your CPAP therapy with Auto-Ramp for gentle initiation, Mask Leak Testing for a secure fit, Adjustable Pressure Relief for added comfort, and helpful maintenance reminders to keep your device in top condition.

Expert Tips & Videos

How to Be Successful With a CPAP Machine
Learn on Youtube

FAQs

Is the Luna G3 Auto fixed-pressure or auto-adjusting?

This model (LG3600) is the auto-adjusting Luna G3 Auto (APAP). It automatically adjusts your pressure within the range your physician sets, responding to your breathing through the night. The single fixed-pressure version is a separate model, the Luna G3 CPAP (LG3500).

What is the pressure range?

The Luna G3 Auto adjusts between 4 and 20 cm H2O, in 0.5 cm increments, within the range your physician sets.

Does it have a humidifier?

Yes. It has a built-in heated humidifier with a 360 mL water chamber and a pre-heat function. Use distilled water to prevent mineral buildup.

How do I get my therapy data?

Therapy data is stored on the onboard SD card and can be viewed in the React Health Luna QR app.

How loud is it and how much does it weigh?

It runs quietly at about 28 dBA and weighs about 3.75 lbs, so it is easy to keep on a nightstand or pack for travel.

Do I need a prescription?

Yes. CPAP machines are prescription devices in the United States, so the Luna G3 Auto requires a valid prescription.

What is the warranty?

The Luna G3 Auto carries a 2-year manufacturer warranty.
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