FreeStyle Comfort Oxygen Concentrator Manual: A Comprehensive Guide
CAIRE Inc.’s FreeStyle Comfort portable oxygen concentrator is a leading device, offering five pulse settings and innovative features for enhanced patient comfort and mobility.
This comprehensive guide provides detailed instructions, safety precautions, and troubleshooting tips for optimal use of your FreeStyle Comfort, ensuring a seamless oxygen therapy experience.
Access the PDF user manual for detailed information on device operation, maintenance, and warranty details, empowering you to confidently manage your oxygen needs.

The FreeStyle Comfort, manufactured by CAIRE Inc., represents a significant advancement in portable oxygen therapy. This wearable concentrator is designed for individuals requiring supplemental oxygen, offering increased freedom and an improved quality of life.
Debuted in September 2018, the device quickly gained recognition for its innovative comfort curve design and five adjustable pulse settings, catering to diverse patient needs. It’s an integral part of how home care providers serve patients and build successful retail programs globally.
This manual serves as a complete resource, guiding users through setup, operation, maintenance, and troubleshooting. Understanding its features and following these instructions will ensure safe and effective oxygen delivery, maximizing the benefits of the FreeStyle Comfort.
What is an Oxygen Concentrator?
An oxygen concentrator is a medical device that extracts oxygen from the air around you; Unlike oxygen tanks containing compressed gas, concentrators pull in ambient air – approximately 21% oxygen, 78% nitrogen, and other gases – and filters out the nitrogen, delivering a higher concentration of oxygen to the patient.
This process allows for a continuous and reliable oxygen supply without the need for refills. The FreeStyle Comfort utilizes advanced oxygen concentrating technology, providing a non-invasive method for supplemental oxygen therapy.
This makes it ideal for individuals with respiratory conditions who require increased oxygen levels to maintain their health and well-being, offering a convenient alternative to traditional oxygen delivery systems.
Key Features of the FreeStyle Comfort
The FreeStyle Comfort distinguishes itself with several key features designed for patient convenience and effectiveness. Notably, it offers five adjustable pulse settings, allowing healthcare professionals to tailor oxygen delivery to individual patient needs.
Its innovative “comfort curve” design enhances wearability, ensuring a secure and comfortable fit during activity. As a wearable device, it promotes greater mobility and independence compared to larger, stationary concentrators.

Furthermore, the FreeStyle Comfort combines advanced oxygen concentrator and oxygen conserving technologies. Recent studies demonstrate its superior performance against other leading portable oxygen concentrators, highlighting its reliability and efficiency.

Understanding Pulse Dose Technology
Pulse dose technology, integral to the FreeStyle Comfort, delivers oxygen only when the patient inhales, conserving oxygen and improving efficiency. Unlike continuous flow concentrators, it synchronizes with the user’s natural breathing pattern;
This demand-based delivery system adjusts the oxygen flow rate based on the strength and frequency of each breath. The five adjustable pulse settings allow for precise customization, ensuring optimal oxygen saturation levels.
This technology is particularly beneficial for active individuals, as it reduces oxygen wastage during periods of rest or shallow breathing. The FreeStyle Comfort’s advanced implementation of pulse dose maximizes battery life and portability.
Device Specifications
The FreeStyle Comfort boasts a compact and lightweight design, weighing approximately 4.8 pounds. Its dimensions are 10.1” (H) x 6.1” (W) x 8.5” (D), enhancing portability for active lifestyles.
Oxygen Concentration: 90% +/- 3% on all settings. Pulse Dose Settings: 1-5, providing customizable oxygen delivery. Battery Duration: Up to 8 hours, dependent on pulse setting.
Input Voltage: 100-240 VAC, 50/60 Hz. Power Consumption: Approximately 85W. Sound Level: Below 46 dBA. The device operates efficiently, offering reliable performance and extended use between charges.
These specifications demonstrate CAIRE Inc.’s commitment to delivering a high-quality, user-friendly oxygen therapy solution.
Setting Up Your FreeStyle Comfort
Before initial use, carefully unpack your FreeStyle Comfort and verify all components are present. This includes the concentrator unit, battery, AC power adapter, DC power adapter, nasal cannula, and user manual.
Ensure the device is free from visible damage. Important: Do not remove any covers as they contain essential safety features. Familiarize yourself with the device’s controls and indicators as outlined in this manual.
Proper setup is crucial for optimal performance. Begin by charging the battery fully before first use, following the instructions in the dedicated charging section. This ensures maximum runtime and device longevity.
Always refer to the complete manual for detailed guidance and safety information.
Initial Inspection and Components
Upon receiving your FreeStyle Comfort, thoroughly inspect the packaging for any signs of damage during transit. Carefully unpack all components and compare them against the included parts list within the user manual.
Your package should contain: the FreeStyle Comfort unit, a rechargeable battery, an AC power adapter, a DC power adapter for use in vehicles, a nasal cannula for oxygen delivery, and this comprehensive user guide.
Visually inspect the device for any physical defects. Do not operate the unit if any damage is detected; contact your provider immediately. Retain all packaging materials for potential returns or warranty claims.
Familiarizing yourself with these components ensures a smooth and safe setup process.
Charging the Battery
Before initial use, fully charge the FreeStyle Comfort’s battery. Connect the provided AC power adapter to a standard electrical outlet and then to the charging port on the device. The indicator light will illuminate, signifying charging has begun.
A full charge typically takes approximately 3-4 hours. The indicator light will change to indicate a full charge is achieved. You can also use the DC power adapter in your vehicle for charging during travel.
Important: Only use the CAIRE-supplied power adapters to avoid damaging the battery or device. Do not operate the concentrator while it is charging if not necessary.
Proper battery charging ensures optimal performance and extended usability of your FreeStyle Comfort.
Operating Instructions
To begin using your FreeStyle Comfort, ensure the battery is charged or the AC/DC adapter is connected. Press the power button to turn the device on; an audible tone will confirm activation.
The device automatically initiates self-testing upon startup. Allow this process to complete before adjusting settings. Use the control panel to select your prescribed pulse setting (1-5), as determined by your healthcare professional.
Connect a nasal cannula securely to the oxygen outlet port. The device will begin delivering oxygen based on your selected pulse setting. Always follow your doctor’s instructions regarding usage duration and settings.
Regularly check the cannula for proper fit and oxygen flow.
Powering On and Off
Powering On: Press and hold the power button for approximately two seconds until an audible tone is heard and the display illuminates. The device will then initiate a self-test sequence, indicated by on-screen prompts. Allow the self-test to complete fully before adjusting any settings or initiating oxygen delivery.
Powering Off: To turn off the FreeStyle Comfort, press and hold the power button again for two seconds. The device will emit another audible tone, and the display will turn off, confirming shutdown.
Ensure the device is completely powered down when not in use to conserve battery life. Avoid repeatedly turning the device on and off in quick succession, as this may impact performance.
Adjusting Pulse Settings (1-5)
The FreeStyle Comfort offers five adjustable pulse settings, allowing for personalized oxygen delivery based on your physician’s prescription and activity level. To adjust the pulse setting, press the “+” or “-” buttons on the device. Each press will increment or decrement the setting by one level, displayed numerically on the screen (1-5).
Lower settings (1-2) are suitable for rest or low-exertion activities, while higher settings (3-5) are recommended during exercise or increased physical activity.
Consult your healthcare provider to determine the appropriate pulse setting for your individual needs. Changes to the pulse setting should only be made under medical guidance.
Using with a Nasal Cannula
The FreeStyle Comfort is designed for use with a standard nasal cannula to deliver oxygen comfortably. Gently insert the prongs of the nasal cannula into your nostrils, ensuring a secure yet comfortable fit. The cannula’s tubing connects to the oxygen outlet port on the device.
Ensure the tubing is not kinked or obstructed, as this can restrict oxygen flow. Regularly inspect the cannula for damage or wear, replacing it as needed.
Proper cannula fit is crucial for effective oxygen delivery. If you experience discomfort or skin irritation, adjust the cannula or consult your healthcare provider. Maintaining a clean cannula is essential for hygiene and optimal performance.
Maintenance and Care
Regular maintenance ensures the longevity and optimal performance of your FreeStyle Comfort. Consistent cleaning and timely filter replacements are vital for delivering clean, therapeutic oxygen. Always disconnect the device from the power source before any maintenance procedures.
The exterior of the device can be wiped down with a damp, non-abrasive cloth. Avoid using harsh chemicals or immersing the device in water.
Filter replacement is crucial; refer to the device’s user manual for specific intervals and instructions. Proper care, as outlined in THIS MANUAL, will help maintain the device’s efficiency and reliability.
Cleaning the Device
Routine cleaning of your FreeStyle Comfort is essential for maintaining hygiene and optimal performance. Before cleaning, always disconnect the device from both the power source and any accessories. Use a soft, damp – not soaking wet – non-abrasive cloth to wipe down the exterior surfaces.
Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the device. Pay particular attention to areas that come into contact with skin. Ensure the device is completely dry before reconnecting it to power or attaching accessories.

Do not attempt to disassemble the device beyond what is described in this manual for cleaning purposes.
Filter Replacement
Regular filter replacement is crucial for ensuring the FreeStyle Comfort delivers clean, purified oxygen. The frequency of filter changes depends on your environment; however, CAIRE recommends replacing the filter every six months, or more often in dusty conditions.
To replace the filter, locate the filter access panel – consult your user manual for specific location details. Remove the old filter and insert a new, genuine CAIRE replacement filter. Ensure the filter is securely seated within the compartment.
Using non-genuine filters may compromise device performance and void your warranty. Keep track of filter replacement dates to maintain optimal oxygen purity and device longevity.
Troubleshooting Common Issues

Encountering issues with your FreeStyle Comfort? This section addresses common problems. A frequent concern is error codes; refer to the detailed list in the manual for specific meanings and recommended actions.
The low battery indicator signals the need for recharging. Ensure the power adapter is securely connected. If the device doesn’t power on, check the fuse and power cord. Unusual noises may indicate a filter issue or internal component problem – discontinue use and contact a qualified technician.
Always consult the full troubleshooting section in the user manual before seeking further assistance. Proper maintenance and adherence to safety guidelines can prevent many issues.
Error Codes and Their Meanings
Understanding error codes on your FreeStyle Comfort is crucial for quick troubleshooting. The device utilizes a coded system to indicate specific malfunctions. For example, a code related to oxygen sensing might suggest a cannula issue or internal sensor failure.
Refer to the comprehensive table within the user manual for a complete list. Each code is paired with a detailed explanation of the problem and suggested corrective actions. Ignoring error codes can lead to suboptimal performance or device damage.
Important: Do not attempt to repair the device yourself. Contact a qualified service technician for any issues beyond simple troubleshooting steps outlined in the manual.
Low Battery Indicator
The FreeStyle Comfort features a visual and audible low battery indicator to alert you when power is running low. Typically, a flashing light and intermittent beeping sound will signal the need for recharging. The frequency of these alerts increases as the battery depletes further.
It’s vital to heed this warning and connect the device to a power source promptly. Continuing operation on a critically low battery can lead to unexpected shutdown, interrupting oxygen delivery. Always carry a fully charged spare battery for extended use away from power outlets.
Safety Precautions
Always follow these crucial safety guidelines when using the FreeStyle Comfort. Never remove device covers; only qualified technicians should perform repairs. Avoid using the concentrator in areas with flammable materials, such as aerosol sprays or solvents.
Ensure the nasal cannula is securely connected and undamaged. Do not operate the device if it has been dropped or exposed to water. Keep the air inlet filter clean and unobstructed to prevent malfunction.
This device is intended for supplemental oxygen only and should not replace prescribed medical care. Consult your healthcare provider for appropriate oxygen settings and usage instructions.
Warning: Do not modify or disassemble the device.

Warranty Information
CAIRE Inc. warrants the FreeStyle Comfort oxygen concentrator against defects in materials and workmanship for a period of one (1) year from the date of original purchase. This warranty covers parts and labor for repairs or replacement, at CAIRE’s discretion.
The warranty is void if the device has been subjected to misuse, abuse, unauthorized modification, or improper maintenance. Damage resulting from accidents, improper power supply, or failure to follow operating instructions is not covered.
To initiate a warranty claim, contact CAIRE Inc. customer support with proof of purchase. This warranty provides exclusive remedies and replaces all other warranties, expressed or implied.
Downloading the User Manual (PDF)
Accessing the complete FreeStyle Comfort oxygen concentrator user manual in PDF format is simple and convenient. This digital version provides comprehensive guidance on all aspects of device operation, maintenance, and troubleshooting.
To download the PDF manual, visit the CAIRE Inc. website and navigate to the support section dedicated to the FreeStyle Comfort. A direct download link is readily available, allowing you to save the manual to your computer or mobile device.
Having the PDF manual readily accessible ensures you can quickly reference important information, safety precautions, and detailed instructions whenever needed, enhancing your overall experience with the concentrator.

Click here to download the CAIRE FreeStyle Comfort User Manual.