Breas Z2 vs Transcend Micro: Which is the Better Auto Travel CPAP Machine?

With the growing demand for CPAP therapy, the market has witnessed an influx of diverse CPAP models, each boasting unique features and capabilities. This makes choosing a travel-friendly CPAP confusing, even for experienced CPAP users. 

Two of the most coveted sleep apnea machines on the market are the Breas Z2 Auto and Transcend Micro Auto, each with its own promising benefits and advantages. These two machines share many basic features but also have remarkable differences.

In This Review:

• Specifications Comparison: Breas Z2 Auto vs. Transcend Auto Micro
• Key Features: Breas Z2 Auto
• Pros and Cons: Breas Z2 Auto
• Key Features: Transcend Micro
• Pros and Cons: Transcend Micro
• Similarities Between the Breas Z2 Auto and Transcend Auto Micro
• Differences Between the Breas Z2 Auto and Transcend Auto Micro
• The Verdict: Which Travel CPAP is Better?

This comprehensive review will compare the key attributes, pros and cons, and the similarities and differences between the Breas Z2 Auto Travel CPAP and Transcend Micro Auto Travel CPAP Machine. 

Whether you are a long-time CPAP user or considering CPAP therapy for the first time, this review will help you choose the best travel CPAP machine for you.

	Breas Z2 Auto	Transcend Auto Micro
Machine Weight	0.6 lbs	0.48 lbs
Machine Size (LxWxH)	6.48″ x 3.30″ x 2.02″	3.6″ x 3.6″ x 2.4″
Humidification System	Waterless HME (heat moisture exchanger)	Waterless HME (heat moisture exchanger)
Ramp	Set Time 5-45 mins	Auto, Set Time 0-45 mins
AC Power Supply	30W	40W
DC Converter	No	No
Supports Remote Monitoring	No (Data download and Bluetooth only)	No (Data download and Bluetooth only)
Smartphone App	Breas Nitelog app (iOS/Android)	Transcend MySleepDash app (iOS/Android)
Data Download	Yes, via USB port to Breas Dataviewer PC Software	Yes, via USB-C port to Transcend Desktop Software
AHI Display	App, PC software	App, PC software
FAA-Approved	Yes	Yes
Altitude Adjustment	Automatic up to 8500 ft	Automatic up to 8000 ft
Pressure Relief	Z-Breathe 1 to 3 (1 is min pressure relief, 3 is max)	AirRelief 1 to 3 (1 is min pressure relief, 3 is max)
Compatible with All Masks	Yes	Yes
Warranty	2-Year Manufacturer Warranty	2-Year Manufacturer Warranty
Sound/Noise Level	26 dBA	27 dBA with an uncertainty of 2 dBA
Carrying Case	Yes, travel bag available separately	Yes, padded travel case available separately
Expected Service Life	5 Years	5 Years
Filters	Disposable filter (2 included)	Washable foam filter (1 included)
Operation Modes	Auto CPAP, CPAP	Auto CPAP, CPAP
RespShop’s Price	$799 machine only (as of this writing)	$860 (as of this writing)

Universal Heat Moisture Exchanger

Like most travel CPAP machines, the Z2 Auto uses a waterless heat moisture exchanger (HME) instead of a heated humidifier. A HME helps prevent dry nose, mouth and throat during CPAP therapy without requiring you to pack bottles of distilled water. It also makes traveling easier because it’s significantly smaller than a CPAP humidifier. 

The Z2 uses a universal HME that is compatible with all sleep apnea masks and standard non-heated CPAP tubing, saving you money on buying extra accessories.

Here’s how it works: the HME sits between your CPAP mask and hose, trapping heat and moisture when you exhale. When you inhale, the HME releases the trapped moisture and heat into the air to prevent you from breathing in dry air from your CPAP.

Quiet Operation

The Breas Z2 Auto CPAP machine tackles the primary concern CPAP users have with travel machines: noise. With a noise level of only 26 decibels, the Z2 Auto stands out as the quietest travel CPAP machine available today.

In addition to its whisper-quiet motor, the Breas Z2 also includes the Q-Lite In-Line Muffler to further reduce the device’s operational noise. This muffler integrates a layer of sound-dampening foam to reduce airflow noise, ensuring a peaceful night’s sleep for you and those around you. Moreover, it’s compatible with all non-heated CPAP tubing and demands no cleaning or routine upkeep.

CPAP Mask Compatibility

While the Breas Z2 Auto does not come bundled with a mask, it’s designed to work seamlessly with all CPAP masks, whether it’s a full face mask, nasal mask or a nasal pillow mask. 

Auto CPAP and CPAP Mode

With the Breas Z2 Auto, you can choose between two therapy modes: CPAP or auto CPAP. Auto CPAP is also known as APAP (Automatic Positive Airway Pressure).

In CPAP mode, the machine delivers a steady stream of pressurized air at the set pressure level to the user. This airflow prevents airway obstruction during sleep which can cause dips in your blood oxygen level, leading to other health issues. 

Alternatively, in APAP mode, the machine adjusts the air pressure according to the user’s breathing pattern. When the machine detects an increase in airway resistance caused by shifting sleep positions or temporary obstructions, it reacts by delivering a higher pressure to keep the airway open. 

Z-Breathe and Ramp

The Z-Breathe Exhalation Pressure Relief feature of the Breas Z2 Auto is a comfort option that enhances therapy experience by lowering the airflow pressure when you exhale. This makes breathing out on CPAP a lot more comfortable.

Moreover, The Z2 Auto also has a Ramp mode that provides a smoother and slower transition into the therapeutic pressure, allowing users to comfortably adapt and drift off to sleep while using the device. 

When Ramp is activated, therapy begins at a pressure level lower than your prescribed setting. This mode lets you fall asleep more quickly, as the air pressure gradually increases over a period of 5 to 45 minutes.

Auto Start/Stop

With the Auto Start/Auto Stop feature, the Z2 Auto CPAP makes sleep apnea therapy more convenient and easily accessible. Simply put on your mask and start breathing to activate the machine and remove the mask to end therapy. There’s no need to fuss with your CPAP – just put your mask on and concentrate on getting a good night’s sleep. 

Data Reporting

The Breas Z2 Auto offers two methods for users to access their sleep data: through the Breas Nitelog App or the DataViewer PC software. These programs allow users to view their sleep metrics as well as generate CPAP compliance reports.

With the Nitelog app, users can effortlessly check their sleep duration, apnea hypopnea index (AHI) and therapy pressure, all from the dashboard. The app is compatible with Apple and Android devices and connects to the Z2 Auto via Bluetooth. You can also change your ramp pressure, ramp time and Z-Breathe settings right from your smartphone with the Nitelog app.

For those who’d rather bypass the phone app, the Breas DataViewer PC Software provides an alternative. Simply download the program onto your Windows compatible computer and connect the Z2 Auto Travel CPAP to your PC to view and generate a pdf compliance report of your usage hours, AHI, mask leak and other detailed sleep metrics.  

Pros

• Quietest travel-sized CPAP machine on the market
• Compact and lightweight, just the size of a smartphone
• Compatible with any CPAP mask
• User-friendly interface and easy-to-read LCD screen
• Allows you to generate sleep data via mobile app or PC software
• Optional PowerShell battery provides up to 9 hours on a full charge

Cons

• Not recommended to be used with supplemental oxygen
• DateViewer PC software is only compatible with Windows OS

AirMist HME (Heat Moisture Exchanger)

The Transcend Micro AirMist HME is a waterless humidification system that offers a convenient way to enhance the humidity and warmth of your sleep apnea therapy without the hassle of a large CPAP humidifier.

Its mechanism involves capturing and storing the heat and moisture from your exhaled breath, which is then released during your next inhalation, providing you with the necessary heat and humidity to prevent dry mouth and nose.

WhisperSoft Muffler

The Transcend Micro includes a WhisperSoft Muffler Kit to ensure a quieter therapy experience. If the sound of the air flowing through the tube and mask keeps you up at night, the WhisperSoft Muffler is a lifesaver. 

CPAP Mask Compatibility

The Transcend Micro Travel CPAP is compatible with all CPAP masks for hassle-free therapy. Both the Micro AirFlex 6-Foot Hose and the Micro Standard 6-Foot Hose that comes with the device feature 22mm OD connections for universal CPAP mask connectivity.

Depending on your needs and your prescription, you can set the Micro Travel CPAP to fixed pressure CPAP mode or Auto CPAP mode. This eliminates the need to purchase a new machine if you’re later prescribed a different therapy mode. 

Auto Start/Stop

Like other portable CPAP devices available in 2023, the Transcend Micro includes Auto Start/Stop capabilities that begin therapy automatically as soon as you breathe through your CPAP mask. Once you remove the mask, the machine will automatically halt therapy. If you prefer, you can also manually initiate or end therapy by pressing the power button.

Ramp and AirRelief

The Transcend Micro features Ramp technology designed to enhance your sleep experience by gently easing you into therapy. Beginning at a lower pressure and gradually increasing over the designated Ramp Time, Ramp is a comfort feature that helps you fall asleep easier. 

The Micro also reduces pressure when you exhale for greater comfort. Called AirRelief, this feature is available in three levels (1 to 3) and can be turned off entirely, as well. 

Data and Compliance Reporting

With the Transcend MySleepDash app (available on iOS and Android) and the Transcend desktop software (compatible with Windows, not Mac), you can keep track of your sleep data and monitor your therapy progress. The MySleepDash app lets you conveniently monitor your usage hours, mask leaks, and AHI/breathing events through your mobile phone.

If you don’t want to use the app, you can still view your detailed sleep data, adjust comfort settings, and create reports via the Transcend desktop software for Windows. Do note that you will need a USB-C cable to connect the Transcend portable CPAP to your computer.

Pros

• FAA-approved for in-flight use.
• The lightest and smallest travel CPAP machine on the market.
• It comes with a WhisperSoft Muffler to reduce the sound of air from the tube and mask.
• Compatible with all CPAP masks.
• Drying mode helps prevent moisture buildup in CPAP hose and mask.
• Users can view sleep data and generate compliance reports via mobile app or PC software.

Cons

• You must purchase the AirMist HME Kit separately to use the AirMist HME system.
• Compatible with any standard non-heated CPAP tubing only if the WhisperSoft Muffler is connected first to the device.
• Transcend desktop software is only compatible with Windows OS.

In many ways, the Z2 Auto and Transcend Micro are two very similar travel-sized sleep apnea machines. Let’s take a look at their common features. 

Noise Level

Both the Z2 Auto and Transcend Micro Auto CPAP have noise-reducing technologies that minimize noise levels, ensuring uninterrupted sleep and a restful night for all parties. With noise levels of 26 and 27 dBA, respectively, these two devices are among the quietest portable CPAP machines on the market.

Muffler Kit

Along with their noise-reducing technology, the Z2 Auto and Micro also come with mufflers to further reduce operation noise. The Z2 comes with the Q-Lite In-Line Muffler, while the Transcend Micro comes with the WhisperSoft Muffler.

Dual Therapy Modes

The Z2 Auto and the Transcend Micro share another significant similarity in that both travel CPAPs feature CPAP and auto CPAP modes. 

CPAP Mask Compatibility

The Z2 Auto and the Transcend Micro are compatible with any CPAP mask so you can use your favorite mask with either device. 

Waterless Humidification System

It’s essential to have the right amount of humidity during therapy to avoid uncomfortable CPAP side effects like dry mouth while using CPAP and nasal congestion. Luckily, both the Breas Z2 and the Transcend Micro use HMEs to provide heated humidification without sacrificing portability.

Battery-Powered CPAP Machines

If you’re going off-grid, it’s worth investing in a battery pack for CPAP machines to ensure uninterrupted therapy. While aftermarket universal CPAP batteries compatible with all machines are available, both the Micro and the Z2 have their own portable batteries.

The Transcend Micro Auto can be powered by the Transcend P8 Travel CPAP Battery, allowing you to enjoy the convenience of your CPAP therapy during camping trips, flights, or other travels. Similarly, the Z2 Auto is compatible with the optional Breas Z2 PowerShell Module with Extended Battery, offering up to 9 hours of runtime on a full charge. The Breas Z2 battery can be purchased either with the machine or separately.

Sleep Data Reporting

Both the Micro and the Z2 are great options for those who like track their sleep therapy metrics. Both devices support a smartphone app and a desktop software, offering users multiple options to track their therapy progress.

With so many similarities, it’s hard to decide which one is the best travel CPAP machine. Ultimately, the decision comes down to just a few key factors: 

Price

While the Z2 Auto and Transcend Micro have almost the same features, the Z2 Auto is somewhat less expensive, priced just under $800 at the time of this writing. It includes all the essential features found in modern CPAP machines — such as ramp, auto start/stop, pressure relief, smartphone app compatibility, and Bluetooth connectivity — and offers notable additions like the Q-Lite Muffler and an HME unit.

Its drawback is a more dated user interface and a design that some might find less appealing compared to the Micro. However, if functionality is your top priority, the Z2 Auto is the better choice. 

Drying Mode on the Micro

The Micro has a unique drying mode which helps eliminate any remaining moisture from your CPAP mask and hose after therapy. This convenient feature blows air through the CPAP hose and mask to remove excess moisture, preventing bacterial growth and setting the Micro apart from all other travel CPAP machines.

Size and Portability

Both devices offer convenient and efficient therapy solutions for CPAP users on the move. However, if you’re looking to maximize space in your backpack or luggage, the Micro is the superior choice. 

Weighing in at just under half a pound and about the size of a softball, the Micro stands out as the best portable CPAP machine for camping and road trips. In contrast, while the Z2 is bigger, at 0.6 lbs, it remains a commendable choice for a travel CPAP machine. 

The Breas Z2 Auto and Transcend Micro Auto CPAP are two extremely similar travel CPAPs ideal for those who value portability, comfort and quiet. Both machines have dual therapy modes, offer waterless humidification, sleep data tracking via smartphone app and are extremely compact.

The choice between the two ultimately comes down to price, size, design and the Micro’s unique drying mode. There’s no significant difference between the two in terms of size and weight, but if you prefer a smaller, lighter and sleeker CPAP device, the Transcend Micro is the better option.

On the other hand, if you’re looking to get the best value for your money, the Breas Z2 Auto is the superior choice. 

For more information about the Z2 Auto, check out our Breas Z2 Auto Review. And if you’re interested in diving deeper into the world’s smallest travel CPAP machine, be sure to read our Transcend Micro review!

Have CPAP questions? Get in touch with our dedicated team of respiratory therapists and sleep specialists for expert advice! We can answer your sleep apnea questions, help you figure out how to get a CPAP prescription online and provide tailored machine and mask recommendations.