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    CPAP Machine

    One Pressure CPAP Machine Overview

    CPAP Machines blow air at your physician prescribed pressure no matter how open or closed your airway is. This is the most popular type of machine available as it the standard for traditional medical providers. Higher end units support therapy tracking software, off grid power options and heated humidification.

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    CPAP Machines FAQs

      How do I choose the machine that is right for me?
    We provide our customers with many tools to make informed decisions about their machine purchases. Options include:
      How can I compare different machines?
    We work very hard to provide many different ways for our customers to compare products. Here are the machine product guides we have created and maintain:
    • CPAP Machine Comparison Guide. This guide stacks up every CPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular CPAPs, or all CPAP machines we sell.

      Compare Most Popular CPAP Machines

      Compare All CPAP Machines

    • Auto Adjusting Machine (APAP) Comparison Guide. This guide stacks up every APAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular APAPs, or all APAP machines we sell.

      Compare Most Popular APAP Machines

      Compare All APAP Machines

    • BiPAP, VPAP and BiLevel Comparison Guide. This guide stacks up every BiPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular BiPAPs, or all BiPAP machines we sell.

      Compare Most Popular BiPAP Machines

      Compare All BiPAP Machines
      What are data capable machines?
    Data capable machines track your therapy progress and performance over time. Therapy data can be used to spot issues and used to see how changes to your CPAP setup effects your overall treatment. You and your doctor can use the therapy information to make changes in your setup. Some changes might include altering the mask or fit or increasing or decreasing your pressure to see if your therapy performance improves to ensure you are getting effective treatment.

    The data capable machines not only let you know how many hours the machine was used, like pure compliance tracking machines, but also tracks advanced information such as AHI, leak rate, and average pressure (if using an APAP).

    Depending on the machine, the information can be reviewed or accessed
    • On Machine Screen Display. Machines that display advanced tracking using the on machine display allow for fast review of therapy metrics. Many people like to use the on screen display to check every morning. Information such as AHI and leak rate for the previous night are displayed allowing the user to make adjustments such as mask fit. The information provided on the on machine screen is usually average values over different time frames, such as 1 day (last night), 7 night, 30 nights, etc.
    • SmartCode. SmartCode is a code that is accessed through the machine's display. This code is then inputted into the machine's product page on CPAP.com and a summary report is generated. You can see a Sample Report here. An example of an on machine display with the SmartCode is shown below. The only machine with advanced data capable SmartCode is the IntelliPAP AutoAdjust. The SmartCode provides therapy data averages for the following time frames: 1 day (last night), 7 day, 30 day, 90 day, and cumulative. This is like the information provided from the on screen display, however the information is displayed in chart format instead of a single number at a time. SmartCode Display
    • Optional External Software. Some machines have external software that can be used to download the data from the machine for detailed analysis. External software, unlike the on machine display or the SmartCode, allows you and your doctor to access any night of use. Further, the information for any given night can be analyzed hour by hour. This allows you and your doctor to look for patterns in your data through the night; for instance, do you tend to have more apneas in the early morning? Or do you begin to breathe with your mouth open in the middle of the night? Some external software is available for sale to patients, other software is only sold by the manufacturer to sleep professionals. External software may require other components to be able to get the information from the machine onto you computer with the software installed.
      What are compliance tracking machines?
    Compliance tracking machines only track the numbers of hours the machine is used. These machines do not track any advanced information such as AHI or leak rate.

    Compliance machines are basic machines which the manufacturers made to be able to track usage hours. Compliance tracking machines are a manufacturer response to Medicare requirements that mandate DME (Durable Medical Equipment) providers show the Medicare patient used the equipment for the required minimum number of hours set by Medicare. DME providers cannot continue to be paid by Medicare without this information.

    There is one billing code for all CPAP and APAP machines. Therefore a DME will be paid the same from Medicare or insurance whether they provide a patient with a more expensive machine that is data capable with more comfort features or a basic compliance tracking machine. Therefore, compliance tracking machines are the most common type of machine that is provided to patients through local DMEs.

    There is software created to show the compliance information from the machine, however CPAP.com does not recommend purchasing this software. This data will only tell you how many hours you actually used the machine. It will not tell you how effective your therapy is.
      What data capable machines are available?
    CPAP machines which record full data (such as AHI and leak info):


    AutoPAP ("Autotitrating CPAP" or "APAP") machines which record full data:


    BiLevel ("BiPAP") machines which record full data:


    CPAP Machines that only record compliance data (hours used) are:

      Do all CPAPs use filters?
    Yes, all CPAPs use at least one filter that is usually a type of foam material and washable. Some CPAPs offer finer filtration with the addition of a disposable paper filter.

    Cleaning and changing filters is the only maintenance required for a CPAP machine.

    The filters are located at the back of the machine at the air intake.
      How often should I clean my filters?
    Washable foam filters should be cleaned as soon as they become discolored. Manufacturers recommend foam filters be rinsed weekly under clear running water and allowed to air dry before being reinstalled in the machine. If the machine is used in a very dusty environment, the foam filter may require more frequent cleaning.

    Disposable filters and bacteria filters are not intended to be cleaned but rather changed out, disposing of the used filter. Manufacturers recommend changing the disposable filter once a month, more frequently if used in a very dusty environment.
      How can I find replacement parts for my CPAP machine?
    Wondering which filters work for your machine? Or trying to find the right replacement power cord? To find what parts are compatible with your machine or to find what parts of your machine are replaceable you can:
    • Use our Replacement Part Wizard to identify your machine and see all the related parts.
    • Browse for your machine and then click the "Replacement Parts" button on your machine's product page.
      Is there a CPAP that runs on batteries? How long do they last?
    Many CPAPs operate on 12 volt DC power. If your CPAP has a DC outlet, a round, single hole in the back or side of the unit, then you should be able to operate it from a 12 volt DC power source. The appropriate DC power cord is needed but inverter is not necessary. Typically, the DC power cords plugs into the CPAP and end in a cigarette lighter plug. To connect a CPAP directly to a battery, you would need a DC adapter cable that fits over the cigarette lighter plug on the DC power cord and ends in alligator clips.

    For the longest usage time, we suggest you use a deep-cycle marine type battery. It will operate most CPAPs at most pressures for about three nights before needing to be recharged. We sell a smaller, portable, rechargeable Battery Pack on our site that will operate most CPAPs and most pressures for one night. We also have battery kits that come with everything needed to run your machine off battery power including the right cables needed for your machine and a battery.

    The Transcend Travel CPAP Machine by Somnetics can be set up to have a fail-over, back up battery by using their Transcend Multi-Night Battery. If the power goes out, the machine will automatically switch over to battery power without an interruption to your CPAP therapy. Read about that on the "Power" tab of the Transcend Machine page.

      How do I change the pressure setting of my machine?
    When a physician orders a pressure change, or a patient moves to an area with a very different altitude and does not have an altitude compensating machine, there are a number of ways to ensure you are receiving CPAP therapy at the correct pressure.

    Sleep laboratories and sleep disorder centers may be willing to make this pressure change. Just call a local hospital or ask your physician to recommend a sleep lab. Be sure to take your prescription.

    A second way is to do it yourself. We sell manometers that are very portable, accurate, and simple to use. All the machines we sell come with instructions on how to set pressure to physician orders. Most patients have little trouble doing this themselves. If you need help we can talk you through the procedure. Contact us by phone at 1-800-356-5221.

    Gauge Manometer (for pressure measurements)

    Fisher and Paykel Water Column CPAP Manometer with HC325 Chamber

    A third option is to ship the machine to us with the new prescription. We will set it and ship it back.

    It is the law and good common sense to run all sleep disorder devices at the prescribed pressure. If you think your prescribed pressure is wrong, talk to your physician.
      What is the difference between sound pressure and sound power level?
    Sound power level is the acoustic energy emitted by a sound source. It is an absolute value that does not change based on the environment. The sound pressure is what our ears hear and can changed based on the environment and the distance from the sound source. For example, a refrigerator can emit a hum at an absolute value of 38 db (sound power), but standing 20 feet away from it and behind a wall, you may only hear 30 db (sound pressure).

    Did You Know?, CPAP Machines

    • CPAP stands for "Continuous Positive Airway Pressure".
    • CPAP.com does repairs on machines purchased from us! And loaner equipment is available in the interim for a fee.

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