Philips Respironics System One BiPAP S/T (DISCONTINUED)

4.25 Average Rating of 4 Reviews Read Reviews

Discontinued Item:

For Reference: Discontinued June 2021


The System One BiPAP S/T includes all of the great features you expect from a sleep therapy system including a wide pressure range (4-25cm), patient adjustable ramp, automatic altitude adjustment, data card, the latest BiFlex comfort technologies, and a universal power supply. In addition the BiPAP S/T's bi-level therapy -- with a high pressure on inhalation and low pressure on expiration -- provides a more comfortable sleep experience than standard CPAP therapy. Finally the BiPAP S/T offers the added security of a SPONTANEOUS TIMED mode which will initiate a breath, after a set period of time, if no patient breath is detected.

The BiPAP S/T's Digital Auto–Trak Technology detects the onset of inspiration and exhalation and has the ability to recognize and compensate for leaks, both intentional and unintentional.

The BiPAP S/T is designed to provide two different types of bi-level therapy. In SPONTANEOUS mode the BiPAP S/T with Bi-Flex tracks each breath and provides pressure relief at 3 points in the breathing cycle -- while transitioning from exhalation to inhalation, during exhalation, and while transitioning from exhalation to inhalation -- to ensure a comfortable, natural breathing experience.

In SPONTANEOUS TIMED mode the system continues to increase pressure on inhalation and decrease pressure on exhalation; but additional Breathe Rate & Rise Time settings enable the machine to initiate a breath, switching from exhalation to inhalation automatically and comfortably, if a natural breath is not detected within a set time frame.

Many BiPAP users find that the addition of heated humidity to their sleep therapy system improves comfort and helps with overall compliance. The optional System One Heated Humidifier delivers optimum humidity, drastically reduces rainout, and provides ultimate comfort throughout the night by analyzing and adjusting to ambient temperature, changing environmental conditions, relative humidity, and therapy flow. Revolutionary Dry Box technology isolates the humidfier's water source from the inner workings of the device to protect against accidental spillage and water damage.

System One Resistance Control achieves complete system comfort by enabling the device and mask to work optimally together. Through simple settings, the System One Resistance Control instructs your BiPAP to compensate for variable resistance characteristics related to different masks. The result is synchronous pressure delivery and the assurance you can enjoy the full benefits of your system no matter which mask is used.

The System One BiPAP S/T tracks many common OSA related events including AHI, leak, clear airway apneas, and minute ventilation. It recognizes and compensates for leaks.


Product Information

  • Manufacturer Philips Respironics
  • In the Package PR System One BiPAP S/T BiLevel, SD Data Card, Carrying Case, Filters (2 Reusable Foam Filters Included, Optional Ultra Fine Filters Available Separately), 6-Foot Performance Tubing, Printed Users Manual, Power Cord & External AC Power Supply, 2-Year Manufacturer's Warranty (BiPAP Only). Heated Humidifier available as a custom add-on in shopping cart.
  • Part Number(s) 1061420 (BiPAP S/T), 1061422 (BiPAP S/T with Heated Humidifier)
  • HCPCS Code E0472
  • GTIN / UPC Code
  • Warranty 2 Years - Review manufacturer's documentation for full warranty details.
  • Prescription Item Prescription required for the purchase of this item.
  • Country United States of America (Typical Origin)

FAA Approved

  • FAA Compliant Label Included on Base of Unit for Easy Identification. This product meets FAA regulations for use on commercial flights within the US and all international flights that depart or arrive in the US. Click here for TSA / FAA information on traveling with sleep and oxygen therapy. Always contact your airline prior to your flight to confirm any requirements they may have (i.e. a copy of your prescription or a letter of medical necessity) for allowing your device on board.

Physical Specifications

  • Size (Approx) BiPAP = 7 x 5.5 x 4 inches, BiPAP with Humidifier = 7 x 10.75 x 4 inches
  • Weight (Approx) BiPAP = 3 lbs, BiPAP with Humidifier = 4.8 lbs, Power Supply = .75 lbs

Performance Specifications

  • Therapy Modes CPAP, BiLevel S, BiLevel S/T
  • Pressure Range 4-25 CM H2O
  • Ramp 0 to 45 Minutes (5 Minute Increments)
  • Ramp Start 4 to Min Pressure (User adjustable)
  • Sound Levels Average less than 30 dBA
  • Altitude Adjustment Automatic
  • Leak Compenstation Automatic
  • Auto On/Off Yes
  • Comfort Technology Bi-Flex (Available on S Mode)


  • Masks Compatible with all CPAP/BiPAP Masks
  • Tubing Compatible with all Standard CPAP Tubing, Performance Tubing, and Slim Performance Tubing.

Therapy Data & Compliance

  • Data Storage On SD Card (1 Year - Daily details with Flow Waveforms); On-board (Up to 6-Months); Data Available (Patient pressure, leak, tidal volume, minute ventilation, and respiratory rate)
  • Data Viewing Compliance Visual Inspection Compliance, 7 and 30-day averages

Power Specifications

  • AC (Wall) Power 100-240V, 50-60Hz (Auto Sensing)
  • AC Power Supply Yes
  • AC Power Supply Weight .75 lbs (Approx)


Average Rating of
Total 4 Reviews
  • .I LOVE my ST Debby.

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    I had to write after i read Debbie's review that said the bPAP ST wasn't worth the money. Just because your doctor won't read the card data doesn't mean the machine is bad... not sure about your doctor though. I got my bPAP ST last year and love it. I've never slept so well. How is your machine working? I don't mean the card, I mean the machine?!?
    Written by Rhonda S., 2015-08-07
  • .The card can not be read

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    you have to have a special program to read the card and my Dr office does not have this program and will not buy it just for my machine so this card function is a waste of money
    Written by DebbieHollan, 2015-05-11
  • .I'm going to live.

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    I have used CPAP's in the past and hated them. They were loud, cumbersome, and a down right pain in the, well you know. I decided to try and have the surgery for sleep apnea, I thought how bad could it be, well it was the worst surgery I have ever had. The pain, after they remove your uvula and stitch it up, they can't put a bandage on it. Well, when you breath it hurts, when you swallow it hurts, when you move your tongue it hurts, you can't take enough morphine to ease the pain. The best you could do is asked to be placed in a medical induced Coma for 10 days. So i would suggest that everyone eliminate that as an option, Just saying. So now 10 years down the road, my wife says to me a few months ago, dear, I love you, but if you don't do something about your snoring, were going to have problems. She then told me that I snore so loud that she could shoot me and no one would even hear the gun go off. (and for a while she kept the gun in her night stand on her side of the bed). So because I love my life, oops, my Wife, I contacted my ENT Doctor, and within a week I had my new PR System 1. Within 3 days of using it, I had more energy, and I no longer needed my mid-day naps. But the best part of having my new PR Sys 1 is, my Wife has also shown improvements in her health, because I no longer keep her awake all night. The System is quiet, really quiet, its easy to clean and take care of. I love the different temperatures you can set the humidity at. The controls are easy to use, an if adjustments are needed, you can do it yourself, no need to take it into the Dr's office or have someone come out to the house to make the adjustments. It is comfortable to use, the pressure changes as I breath, and the machine knows when I stop breathing, and it increases the pressure so I will take a breath again. I am so grateful for my Wife, she gave me the incentive to go see my ENT Dr. and to enjoy the rest of our life's together. So to everyone out there that needs a BiPAP, but doesn't want the hassles that used to came with the old style CPAPs, "THIS IS THE MACHINE FOR YOU. Or Should I Say Your Wife". I Love it, if you ask Mikey, he won't tell you he likes it, But his Brothers will tell you "He Likes It, Mikey Likes It". And thats all I have to say about that. Well maybe, Chocolate, and something about Life and what its like
    Written by Curtis C, 2014-06-12
  • .Finally, I Get to Sleep

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    My husband has used a BiPap for several years and now has to have oxygen as well. The sounds coming from the machine and hoses has been very difficult to ignore. Three days ago he started using the System One machine. I kept checking it because it is so silent I thought it was off! He also hasn't snored using this machine. I love it and so does he.
    Written by Micki R., 2014-02-15