3B Medical RESmart™ Auto CPAP Machine with RESlex and Heated Humidifier

    Top Reviews

    "Easy to use, easy to setup if you need to change.CPAP.COM made it an easy choice."

    July 27, 2013

    "Fantastic product and quick service. The machine is perfect and the aromatherapy kit is a great addition. I thank you so much."

    July 20, 2015

    Product Overview

    The RESmart™ Auto CPAP Machine with RESlex with Heated Humidifier offers advanced features for therapy comfort and success. RESlex™ Exhalation Relief makes breathing out against the air flow easier while the Auto-Adjusting technology provides optimum therapy pressure on a breath by breath basis. Advanced data is available on the screen each morning or access the data remotely using iCode. The integrated Heated Humidifier is included to maximize therapy comfort.

    Manufactured by 3B Medical.

    Product Features

    *Looking for the Respironics REMStar? That model has been discontinued. Looking for the RESmart™ Auto CPAP Machine with RESlex with Heated Humidifier? Read on...*

    RESmart Auto CPAP Machine is an auto adjusting machine that delivers a therapy air stream at the optimum air pressure based on the user's needs throughout the night.


    • RESlex Pressure Relief
    • Auto-Adjusting Technology & Sensitivity Setting
    • iCode™ Advanced Data
    • iPhone and Android Apps Available
    • 365 Days of On Board Memory
    • Auto On-Off Feature
    • Auto Altitude Compensation
    • Power Off Alert
    • Leak Alert
    • Integrated Heated Humidifier Included
    • Easy Carry Handle

    Therapy Comfort: Auto-Adjusting and Pressure Relief

    The RESmart Auto CPAP uses auto-adjusting technology to provide the best level of pressure for effective therapy. The machine adjusts the delivered air flow based on information gathered on a breath by breath basis. The pressure range is set in the Clinical Menu with MaxAPAP being the highest pressure and Treatment Pressure being the lowest pressure.

    Sensitivity Setting, a feature unique to the RESmart Auto CPAP, allows the user to set the responsiveness level of the auto-adjusting algorithm. It offers settings 1 through 5 with 1 being a "soft" adjustment and 5 being a "hard" adjustment. "Soft" means that the adjustment will be applied over a longer period of time and "hard" means it will be applied more quickly. The machine is set to a default setting of 3 or mid-range Sensitivity Setting.

    RESlex is a therapy comfort feature that reduces the air stream pressure during exhalation making it easier to breathe out against the flow. RESlex can be set to a level of 0, 1, 2, or 3 with 3 being the largest drop in pressure at exhalation. The default setting for RESlex is 0, or 'off. See the Important Tips tab for information on accessing the Patient Menu to set RESlex setting.

    Therapy Data and iCode

    iCode information maybe entered here: iCode Report Site.

    Access advanced data remotely! The RESmart iCodes are displayed in the patient menu. View a sample of the RESmart iCode Report showing:

    • Days Count
    • Days of Therapy Greater Than 4 Hours
    • % of Days with Therapy Greater Than 4 Hours
    • Average Daily Compliance
    • Average Pressure for 95% of Treatment
    • Mean Pressure
    • AHI Apnea-Hypopnea Index
    • SNI Snore Index

    The RESmart holds 365 days of information in the on board memory. When the data storage is full the oldest data drops off to make room for the new information. iCodes are available for:

    • 1 Day
    • 7 Days
    • 30 Days
    • 90 Days
    • 182 Days
    • 365 Days

    View the RESmart iCode Quick Reference Sheet for more information on iCode functions.

    Smart Phone Apps - iPhone & Android

    Available for both iPhone and Android devices, the manufacturer of the RESmart Auto offers the free 3B/BMC iCode App. Search iTunes or GooglePlay to locate and download the application.

    Available Alert and Auto Functions

    In addition to auto-adjusting technology and Sensitivity Setting, RESmart offers a number of automatic features making it comfortable, reliable and easy to use. Auto Alert functions can be changed in the set up menu.

    • Auto On-Off starts the therapy session with breathing into the mask and turns off when breathing into the mask stops.
    • Auto Altitude Compensation adjusts between sea level and 8202 feet. If desired, the altitude can be manually set to 3 levels - see the Specs tab for details. Manually setting the altitude compensation may be helpful for users living at very high altitudes.
    • Power Off Alert sounds if the power to the device is interrupted during use.
    • Auto Leak Alert notifies the user of an open air circuit with an audible tone.

    Heated Humidifier

    The RESmart heated humidifier snaps onto the front of the device using the same power supply as the machine. Set the humidifier between 1 and 5 based on desired therapy humidification level. The RESmart chamber is designed to avoid flow of water back into the machine from the humidifier reducing the chance of water damage to the machine.


    This Product Includes...

    • RESmart Auto-CPAP Machine
    • Heated Humidifier for RESmart Auto-CPAP
    • 6 Ft Hose (22mm)
    • Carry Case
    • Power Cord
    • 2 Disposable Filters -1 Installed & 1 Extra
    • Manual

    Product Specifications

    Machine & Humidifier Warranty 2 years

    Pressure 4 to 20 cm H2O (.5 increments)

    Ramp Time 0 to 60 min. (5-min. increments)

    Starting Ramp Pressure 4 to min pressure

    Machine Dimensions 8.7"L x 7.6"W x 4.4"D

    Machine and Humidifier Dimensions 12.3"L x 7.6"W x 4.4"D

    Machine Weight 3 lbs 8.44 oz (1.6 kg)

    Machine & Humidifier Weight 5 lbs 4.66 iz (2.4 kg)

    Filter Disposable - Dual Filtration

    Sound level <30 dBA

    Operating Altitude Sea level to 8202 ft

    Manual Altitude Settings Can be used in addition to r Auto Altitude Adjustment
    • 0 = less than 2460 ft
    • 1 = 2460 to 4921 ft
    • 2 = 4921 to 8202 ft

    Tubing Standard 6 Ft Hose, Flexible plastic, 22mm inner diameter

    Device Set-Up Control Panel Push Buttons

    Humidification Integrated Heated Humidifier or Pass-over Humidifier

    DC Power Use with Inverter

    Data Storage Capacity Display: 365 days summary data

    Temperature Range for Operation of Machine 41 to 86° F (5-30° C)

    Humidifier Temperature Output Settings 1 - 5 (104° to 149° F) always offers these services:

    • 8 am to 8 pm CST Toll Free Phone and Email Support
    • 24 hour access to our Support Forum
    • Learning Center for information on sleep apnea and cpap equipment
    • Consumer Purchasing Trends Reports
    • Warranty Services for all items purchased through
    • Insurance Compliant Invoices
    • Free Prescription Request System

    Important Tips

    User Manual:

    The user manuals included with this machine can be viewed and downloaded here: RESmart CPAP Machine and RESmart Heated Humidifier.

    Review the Quick Reference Sheet RESmart Auto & CPAP for help with settings.

    The RESmart iCode Quick Reference Sheet offers information on iCode functions and reports.

    RESmart machines use a standard, 22mm hose and are not compatible with 15mm hoses.

    RESlex Setting: The default setting for RESlex is turned off with a setting zero. RESlex is set in the Patient Menu. To access the Patient Menu:

    • With the machine turned off, press and hold the Ramp button.
    • The "Heater" setting will appear in the window.
    • Step through the settings by pushing the "+" button. RESlex is the seventh setting.
    • To change the RESlex setting, press the Ramp button one time, on the display screen a square next to the setting number will flash indicating it is active.
    • Pressing the "+" and "-" buttons select the desired level of RESlex. 0=Off; 1= the least drop in pressure at the time of exhalation; 3= the most drop in pressure at the time of exhalation.
    • Press the Ramp button once to set the RESlex setting.
    • Step through the remaining 6 menu items by pressing the "+" button until reaching the word "SAVE"
    • Press the Ramp button to LOCK IN any changes made. The screen will display will return to the ready mode.
    • NOTE - If the settings are not locked in with SAVE the changes will not be in place when using the machine.

    DelayOff with Humidifier Usage: If a humidifier was used during the therapy session, the machine will continue blowing in a 'DelayOff' mode at a very low pressure to cool off the heating elements. This is normal operation for the RESmart line of machines. This feature can be changed in the Patient Menu as detailed above for RESlex. Look for the feature "DelayOff."

    When "Enable" is selected, a machine with humidifier will run at a low pressure to cool and dry the machine. When "Disable" is selected, a machine with a humidifier will turn off when the therapy session is ended.

    Range for auto-adjusting: The RESmart Auto machine refers the pressure range with the terms MaxAPAP (highest pressure) and Treatment Pressure (lowest pressure). Some manufacturers call these the Max and Min pressures. The machine will adjust to the optimum pressure between the two. When in auto-mode, the pressures displayed on the screen under the word "Ramp" and the ramp time are the starting "Ramp" pressure on the left and the Treatment, or minimum, pressure on the right.

    Filter Change: Remove the filter cover by depressing the tab on the bottom of the cover and pulling up on the flare at the bottom of the cover. Insert the filter with the smooth, flat side facing INTO the machine. The textured side of the filter will be showing when installed correctly. Snap the filter cover back in place. Never install a wet filter.

    Humidifier Chamber: The humidifier chamber is sealed and cannot be taken apart. It is recommended to fill and empty the chamber through the top port. Alternately, the silicone plug on top of the chamber can be removed to allow emptying. To replace the silicone plug, set the chamber on a hard, even surface, line up the tabs with the holes on the chamber and press firmly downward.

    Use with In-Line Bacteria Filter: Please note that an in-line bacteria filter will fit snugly onto the RESmart heated humidifier, but will not make a proper connection to the machine without humidifier. A FlexiTube Angle Adapter for CPAP and BiPAP Machines can be used to connect the in-line bacteria filter to the machine without humidifier.

    3B Products Manufacturer Warranty on the RESmart™ Auto CPAP Machine with RESlex with Heated Humidifier: The RESmart™ Auto CPAP Machine with RESlex with Heated Humidifier has a 2 Year Manufacturer Warranty. will work with the manufacturer on your behalf if the machine needs repairs. Please follow these steps:

    • Contact us at or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment
    • Include a note with the machine describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you
    • Ship only the defective items to at 13235 N Promenade Blvd Stafford, TX 77477
    • Do not return accessory items such as the carry bag, hose or power cords
    • Loaner Machines are available for rental during the warranty process
    • Email updates will be sent to keep you informed as the machine moves through the warranty process
    • will contact the manufacturer on your behalf and handle all shipping between us and the manufacturer
    • The repaired or replaced unit will be returned to you. Shipping charges may apply.

    Please note: The manufacturer warranty is voided by water damage or misuse of the machine.

    Power Options

    Freedom Travel Battery

    Weighing in at only 1.7 pounds, the Freedom Travel Battery is a great way to power the RESmart when travelling or on-the-go. It's light enough and portable enough to go almost anywhere, especially in off-the-grid situations. The Freedom Battery is also FAA certified, meaning it's cleared for use in-flight.

    Currently, the only way to connect this machine to the Freedom Battery is by using a 150 Watt Sine Wave DC to AC Power Inverter (sold separately).

    Deep Cycle Batteries

    Alternatively, by using the inverter mentioned above, it is possible to connect to a Deep Cycle (car and boat) Battery with the 150 Watt Sine Wave Inverter mentioned above. does not sell Deep Cycle Batteries. Deep Cycle Batteries are available locally at auto parts stores.

    CPAP Video & FAQ

    Frequently Asked Questions (FAQs)

    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
    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:
    What comes with my machine?
    Machines come with a six foot hose, power cord, at least one filter, and manuals. Most manufacturers include a carrying case which is designed specifically for their equipment. CPAP, APAP, and BiPAP machines do not come with a delivery system or mask. CPAP masks must be purchased separately.

    To see the list of what specifically comes with each machine, you can Browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.

    What type of power does my CPAP need?
    Most CPAP, APAP and BiLevel machines today are designed to operate on both AC and DC voltage. In the United States, the AC current from a wall outlet is 110 volts. Overseas, the AC current is usually 220 or 240 volt. Most batteries produce 12 volt DC current.

    We include information about the power needs and capacities on the pages our products. Please see the "POWER" tab on any machine product page for this information. You can also see a summary of the voltage range and whether it is DC capable on our Compare Charts.

    Here is a video explaining differences in power cords and power supplies of various CPAP machines:

    What maintenance is required on machines?
    The only care a CPAP, APAP or BiPAP machine requires is to clean or change the filters at the air intake. This keeps the internal parts from accumulating dust. Fine paper filters should be changed out every 30 days, or when they appear soiled. Foam washable filters should be rinsed with clear running water once a week, allowed to air dry, and reinserted.

    Here are some other suggested actions to care for your machine:
    • Keep the area around your machine clean by removing any dust from the area to improve the air quality delivered to your machine and to you.
    • Keep the air intake of the machine unblocked. Curtains, bedding, and papers can easily block the air intake of your machine, reducing the airflow.
    • If a humidifier is used with your therapy, do not pick up the machine with the humidifier attached. With most machines it is easy to spill water from the humidifier chamber into the machine causing damage. Manufacturer warranties are voided by water damage to the machine. To avoid this, remove the chamber from the humidifier and then remove the humidifier from the machine rather than transporting them together.
    • If a humidifier is used, empty the water from the chamber every morning. Accidents happen. If a family pet or family member moves the machine and humidifier with water in the chamber it is more likely that water could be spilled into your machine. Water damage to a machine voids the manufacturer warranty.
    Are prescriptions required for mask, machine, humidifier, and EPAP purchases?

    Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine, humidifier, or EPAP therapy, including Provent and Bongo RX. You will also need a prescription to purchase the Nightbalance POSA device.

    We provide many easy ways to get your prescription:

    • We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
    • Fax your prescription to our toll-free fax number: 866.353.2727, or our international fax number: 713.541.7377
    • Email your prescription to
    • Upload your prescription in your account, under the Prescriptions Section
    • Ask your doctor to fill out our prescription form. We have both a standard prescription form and an EPAP prescription form.

    For more information on prescriptions, please see our Prescription Section of the Learning Center.

    Which CPAP masks work on which machines?

    Any mask will work with any machine, with one important exception. The ResMed AirMini is only compatible with certain ResMed CPAP masks. Compatible masks for the AirMini are as follows:

    • ResMed AirFit™ N20 Nasal Mask
    • ResMed AirFit™ F20 Full Face
    • ResMed AirTouch™ F20 Full Face
    • ResMed AirFit™ P10 Nasal Pillow

    When considering another CPAP, APAP or BiPAP machine from ResMed or any other manufacturer, mask compatibility extends to all brands. The AirMini uses non-standard tubing to connect the machine to the mask, and is the primary reason why other masks won't work with the AirMini. Despite this issue, many of our customers consider the AirMini to be an excellent machine.

    What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?

    E1399 is Miscellaneous and is used for other CPAP and Oxygen items.
    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.
    What is an APAP Machine?
    An APAP (Automatic Positive Airway Pressure) machine automatically adjusts on a Breath by Breath basis to blow the Minimum Pressure needed to keep your airway open during sleep. This allows your machine to provide you with your ideal pressure nightly.

    APAPs tend to be more advanced than CPAPs in that they normally offer more therapy tracking information and more comfort features.

    Every APAP machine can be placed in a CPAP mode to blow one straight pressure like a CPAP. However, CPAP machines cannot automatically adjust pressure like an APAP. This DeVilbiss IntelliPAP AutoAdjust is an example of an APAP machine that comes with built-in Smart Code therapy tracking software.
    IntelliPAP AutoAdjust CPAP Machine

    Here are some of our available APAP Machines:

    DreamStation Auto CPAP Machine
    Z1 Auto Travel CPAP Machine
    XT Auto CPAP Machine
    + See More
    Why might I prefer an APAP machine?
    Some CPAP users find it more pleasant to breathe with an APAP than with CPAP. The pressure delivered by an APAP machine automatically changes as needed to deliver the minimal pressure required to maintain the airway. The pressure delivered by a CPAP machine is set to a single pressure, the highest necessary to keep the airway open as determined during the sleep study. This is the case even when the higher pressure is needed only a fraction of the time.
    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 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 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 is ramp?
    The ramp button on a machine is a feature that allows for a gradual pressure build-up to your prescribed pressure. The feature is enjoyed by those with high pressures because it eases up to their pressure.
    What is exhalation relief?
    Exhalation relief is a comfort feature which reduces the air flow at the time of exhalation, making the breathing process more natural.

    The following are the different types of exhalation relief names by manufacturer.

    • Philips Respironics = C-Flex, C-Flex+, A-Flex and Bi-Flex
    • Resmed = EPR (Expiratory Pressure Relief)
    • 3B Medical = RESlex
    • Apex Medical = PVA (Pressure Variation Algorithm) Pressure Relief
    • Curative Medical = EUT (Expiratory Unloading Technology)
    • DeVilbiss = SmartFlex
    • Fisher & Paykel = SensAwake Technology
    • Human Design Medical = Z-Breathe
    • Somnetics = EZEX

    Here are some machines with an exhalation relief feature:

    Transcend Auto miniCPAP™ Machine with EZEX
    PR System One REMStar 60 Series Auto with Bluetooth
    AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
    + See More
    Will my CPAP operate overseas?
    An adapter may be required to plug a US power cord into a wall outlet in a foreign country. sells an assortment pack of World Traveler Power Adapter Plugs, which allow CPAP machines to plug into different types of wall sockets found in different countries.
    All the models sell contain power converters that enable the machine to operate on any AC current from 100 to 240 volts without any adjustment.
    What does an APAP prescription need to say?
    An APAP prescription must contain all of the following information:
    • One of the following words or phrases: "APAP", "AutoPAP", "AutoSet", "Auto CPAP", "Auto Adjusting CPAP", "Self Adjusting CPAP", "CPAP" or "Continuous Positive Airway Pressure" or similar term.
    • Your physician's contact information
    • Your physician's signature
    • The patient's full name

    An APAP prescription may contain the following information:

    • Your pressure range (Optional, Not Required)
      • Example: 4-20 CM/H20
      • Example: 4-20
      • Example: 6-18 CM/H2O
      • Example: 6-18

    CPAP prescriptions are accepted for Auto Adjusting (APAP) machines.

    Here are some of our top selling APAP machines:

    Transcend Auto miniCPAP™ Machine with EZEX
    PR System One REMStar 60 Series Auto with Bluetooth
    AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
    + See More
    Visit the Learning Center

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