PR System One REMstar Auto CPAP Machine and Humidifier

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4 Stars 11 Reviews
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  • Made in the USA
  • Easy to remove and attach humidifier
  • Auto dimming LED helps create a darker room for easy sleeping
  • Compliance meter breathing detection
  • Auto Titrating - Pressure levels will automatically change throughout the night to reflect the patient's needs.
  • Includes the Respironics Performance Tubing
The Philips-Respironics "System One" REMstar Auto with A-FLEX takes a smarter approach to the entire sleep management process. New features such as resistance control, advanced event detection and response, upgraded data management and reporting, A-FLEX, Dry Box technology, and System One humidity control put this CPAP machine on the cutting edge.

A-Flex is designed to work with Respironics’ clinically proven auto CPAP algorithm to improve comfort even more by matching pressure delivery to the patient’s entire breathing cycle. Like C-Flex, A-Flex provides flow-based pressure relief at the beginning of exhalation. Like Bi-Flex, A-Flex softens the pressure transition from inhalation to exhalation to provide additional comfort in an auto-CPAP mode. The pressure profile mirrors the patient’s breathing, and with the auto algorithm intelligence, it will respond to the patient’s therapeutic need throughout the sleep session.

The System One resistance control allows the patient to tell the machine what type of mask you are using such as a nasal, full face, or nasal pillow. The machine then makes adjustments for optimal flow depending on your mask. Each Respironics mask will now come with a resistance control setting letting you know how to set your machine to match your mask.

Philips-Respironics has upgraded their event detection algorithm to include data on Snoring, Periodic Breathing (PB), Respiratory Effort-Related Arousals (RERAs), Apnea Hypopnea Index (AHI), leak, Clear Airway Apnea (CA), Obstructed Airway Apnea (OA), Flow Limitation (FL), and Hypopnea (HY). The REMstar Auto will also record Patterns of use and Flow waveform data. With this information, your physician will be able to better determine the best possible solutions for your sleep therapy.

In addition to detecting the above events, the REMstar Pro will respond to FL, RERA, Snore, leak, OA, and HY. If the REMstar Pro detects that any of these events are about to occur, it will adjust pressure accordingly to compensate for the event.

The PR System One uses a SD card for data collection. Prior to the System One, patients were required to use a specialized card reader when uploading sleep data to a computer. Philips-Respironics has made this process easier by using the standard SD card, giving the patient the ability to use any SD reader to upload sleep data.

Philips-Respironics also listened to user feedback when designing the System One Heated Humidifier. A cleverly designed water chamber works with a built in Dry Box to virtually eliminate water getting into the machine during normal use. Even with a water chamber filled to the FULL line, the machine can be tilted and even turned upside down without leaking water back into the unit*. Furthermore, System One Humidity Control monitors room temperature, room humidity, and flow to determine what is required to maintain your selected humidity setting, even when environmental conditions change. Because of this, you can be assured that your therapy comfort will be maximized by virtually eliminating rain-out and condensation buildup in the tubing.

* PLEASE NOTE: ALWAYS drain your water chamber completely when transporting or moving your machine.

View Specs

  • Machine TypeAuto CPAP
  • Brand/Manufacturer:Respironics
  • Weight:4.2 lb
  • Dimensions:7" x 11" x 4"
  • Noise Level:29 dB
  • Warranty:2 year
  • Data Card:Yes
  • Software Available:Yes
  • Ramp:0 to 45 min. (5 min. increments)
  • Exhalation Relief:A-FLEX/C-FLEX/C-FLEX+
  • Pressure Range:4-20 cm/H2O
  • Altitude Adjustment:Automatic
  • Passover Cool Humidifier:Available
  • 110 Voltage:Yes
  • 220 Voltage:Yes
  • Can Use A Battery:Yes
  • Integrated Battery:No
  • Mask Off Alert:Yes
  • Included In Box:CPAP machine and heated humidifier, performance tubing, AC power cord, 2 filters, user manual, SD card, side cover, and carrying case.
  • Product Condition:New
  • Other Information:Made in the USA. Data Card storage On-board: up to 6 months, SD card: up to 1 year
  • HCPCS Reimbursement Code:E0601, A7037
  • Prescription Required:Yes

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Product Reviews for the PR System One REMstar Auto CPAP Machine and Humidifier (DS550HS)

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Average Rating

by on May 4, 2011

Thank you Respironics and Thank you CPAP SUPPLY,USA you are both a life saver. Made my life a whole lot better. GREAT Price too!

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by on June 11, 2011

Got my life back together with this machine. Not a bad price for this life saver. This auto machine is so much better then the machine, with the set pressure. You and your breathing are in control. Get your doctor to prescibe the auto, you'll like it so much better. And that humidifier and really does work great too. Wake up in the morning, being so refreshed. Highly Recommended!

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by on March 8, 2011

We got this for my son and he loves it! He is 15 and was just diagnosed with sleep apnea. Because fo the swivel for the tubing it rotates and he doesn't get caught up in the tube.

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by on June 23, 2011

Highly recommended.This machine is the top of the line for me. The humidifier and the A-flex were a big selling point for me. I'm so happy, I give you 5 STARS.

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by on February 28, 2012

This c-pap unit is the bomb! I am sleeping so much better! It is true this machine is quieter than the s series my husband has the s series. I like my machine better.

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by on November 4, 2011

LOVE LOVE LOVE this machine!! Extremely quiet, auto adjusting = better sleep! Thank you Respironics. Sweet Dreams.

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by on May 27, 2011

Such a good deal! Did you know about the combination kit with this machine and the comfortgel blue?? Its a really great price for two such great items!

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by on April 1, 2015

Overpriced, too basic and is pretty much a toy put up against better machines. Never had any luck with this limited cheap piece of junk my insurance company stuck me with. Even my dr was surprised they gave such a limited unit for therapy.

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by on August 18, 2011

I love the ease of use of this machine. Works Great! I just ordered one to replace my wife's old system.

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by on March 10, 2012

the water supply lasts in the system one holds about 3-4 oz of water. about 3 hrs even at low settings it runs dry. wake up every 3-4 hrs with cotton mouth. i have a well humidified house. i fill 2 2.5 gal humidifiers twice a day(5 gal of water).

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by on May 20, 2011

This unit is the awesome and the greatest of all I have been on in the last 6 years. I like the cool humidifier system idea because i believe the heated option causes more condensation and I don't need the heat.

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