Your legal options for selling a CPAP machine are narrow. Because the FDA classifies CPAP devices as Class II medical devices that require a prescription, you cannot legally sell one directly to another person the way you would sell a used appliance or piece of electronics. The primary legal path is selling to an authorized reseller or refurbisher that is set up to verify prescriptions and comply with federal regulations. Understanding why the rules are this strict, and what alternatives exist beyond a direct sale, can help you figure out the best way to handle a machine you no longer need.
Why You Cannot Just List It Online
CPAP machines fall under the same FDA regulatory umbrella as powered wheelchairs, insulin pumps, and surgical lasers. The Class II designation means the device poses a moderate risk to users and must be sold through channels that ensure proper medical oversight. In practice, that means a buyer needs a valid prescription from a physician or sleep specialist before anyone can legally hand them a CPAP. When you list a CPAP on Craigslist, Facebook Marketplace, or eBay, you are effectively acting as a distributor of a prescription medical device without the authorization to verify that the buyer has a prescription. That is a federal regulatory violation, not just a marketplace policy issue.
Major online platforms have caught on to this. eBay explicitly prohibits listings for CPAP machines and most CPAP accessories. Facebook Marketplace and Craigslist have similar restrictions, though enforcement is uneven. You might see listings slip through, but that does not make the sale legal. If caught, both the seller and the platform face potential FDA enforcement action. More practically, selling a prescription device without proper documentation leaves you exposed if the buyer has a bad outcome and traces the device back to you.
Authorized Resellers and How They Work
The most straightforward legal route is selling your used CPAP to an authorized reseller. These are companies that hold the proper registrations to receive, refurbish, and redistribute prescription medical equipment. They typically operate online, and the process is simple: you ship the device, they inspect and test it, and they either pay you a flat fee or offer store credit toward other products. The payout is modest compared to what you paid originally, often somewhere between $50 and $200 depending on the model, age, and condition of the machine. Newer, higher-end units with features like auto-adjusting pressure or integrated humidifiers fetch more.
The reseller then handles the regulatory side. They sanitize and refurbish the device, verify that incoming buyers have valid prescriptions, and sell it at a reduced price to someone who needs it. This is the same model used for refurbished hearing aids and other Class II devices. It keeps you legally clean and puts the compliance burden on a company that is set up to handle it.
Finding a legitimate reseller requires some due diligence. Look for companies that are registered with the FDA as medical device establishments and that explicitly describe their prescription-verification process. If a company offers to buy your CPAP without mentioning prescriptions anywhere on their site, that is a red flag. Durable medical equipment (DME) suppliers sometimes run trade-in programs as well, particularly when you are upgrading to a newer model through the same provider.
Donating Instead of Selling
If the financial return is not your primary concern, donation is often the easier and more impactful option. Several nonprofit organizations accept used CPAP machines and distribute them to people in low-income countries or underserved communities where access to sleep apnea treatment is limited. The American Sleep Apnea Association has historically facilitated CPAP donation, and smaller organizations run similar programs in various regions.
Donation programs typically accept machines that are in working condition and less than five years old. You ship the device to the organization, they handle cleaning, testing, and redistribution. From a legal standpoint, donating to a recognized nonprofit that is set up to redistribute medical devices avoids the prescription-verification problem that makes direct sales illegal, because the nonprofit acts as the intermediary and handles compliance on the receiving end.
There is also a tax angle. Donated medical equipment can qualify as a charitable deduction if you itemize your taxes. The deduction is based on the fair market value of the device at the time of donation, not what you originally paid. Given the modest resale values for used CPAPs, the tax benefit sometimes exceeds what you would have gotten from a reseller, depending on your tax bracket.
Accessories and Supplies Are a Different Story
The prescription requirement applies to the CPAP machine itself, meaning the device that generates and delivers pressurized air. Many CPAP accessories and consumable supplies fall into a gray area or are outright exempt from prescription requirements. Masks, tubing, filters, and humidifier chambers are generally considered replacement parts rather than standalone prescription devices. Some of these items can be legally sold directly to individuals, which is why you see a robust market for used and new CPAP masks and tubing on sites that would never allow a CPAP machine listing.
That said, the boundaries are not perfectly clear. Certain specialized masks and interfaces may still be classified in ways that create regulatory complications. And platform policies do not always mirror FDA rules. eBay, for instance, allows some CPAP supplies but draws the line differently than the FDA does. If you have a pile of unused masks and tubing along with your old machine, selling the supplies separately and sending the machine to a reseller or donation program is a practical way to recover some value without running into legal trouble.
Scrub Your Data Before It Leaves Your Hands
Modern CPAP machines collect a surprising amount of personal and medical data. Most store usage data on a removable SD card, including hours of use per night, mask leak rates, apnea-hypopnea index readings, and pressure settings. A forensic analysis of CPAP machines found that all patient data was stored on a removable FAT32-formatted SD card, allowing recovery of specific medical information about the device and personally identifiable information about the patient.1Forensic Science International: Digital Investigation. Digital forensics in healthcare: An analysis of data associated with a CPAP machine That means anyone who gets your old machine could potentially access your sleep data and whatever identifying details the machine stored.
Before selling or donating your CPAP, remove the SD card and either format it or destroy it. Check whether the machine also stores data in internal memory, as some newer models with wireless connectivity cache information onboard in addition to the card. If the machine syncs with a cloud platform like myAir or DreamMapper, log in and delete your account data or de-register the device. This is not just about privacy hygiene. Sleep data includes health information that could be sensitive in insurance or employment contexts. Treat it with the same care you would give a medical record, because that is what it is.
The Philips Recall Complication
If your CPAP is a Philips Respironics model manufactured before a certain date, selling or donating it gets more complicated. In June 2021, Philips initiated one of the largest medical device recalls in history, affecting more than 10 million devices in the United States and 15 million worldwide. The recall covered 14 models of ventilators and positive airway pressure machines that used a polyester-based polyurethane sound abatement foam. Concerns centered on foam degradation that could expose patients to inhaled toxic particles and chemical emissions.2JAMA Network. The Philips Respironics Recall of Ventilators and Positive Airway Pressure Machines—Breakdowns in Medical Device Surveillance
Recalled devices should not be sold or donated, period. Passing along a machine that is under an active safety recall creates obvious liability problems and genuine health risks for the recipient. If your Philips device is on the recall list, check the Philips recall website for instructions. Philips offered repair or replacement for affected units, though the program was widely criticized for delays. If you have a recalled unit that was never repaired or replaced, your best option is to contact Philips directly or dispose of the device as medical waste according to your local regulations.
Even if your Philips machine was repaired under the recall program, be aware that some buyers and donation organizations are wary of Philips devices from that era. The recall shook confidence in the brand significantly, and a repaired unit may be harder to place than a comparable machine from ResMed or another manufacturer.
What About Giving It to a Friend or Family Member?
This is one of the most common questions people have, and the answer is legally murky. Strictly speaking, the prescription requirement applies to the transfer of the device to a new user. If your friend has their own CPAP prescription from a doctor, the spirit of the regulation is satisfied, but the letter of the law is less forgiving. You are not a registered distributor, and a personal transfer does not include the verification and documentation steps that the FDA expects. In practice, enforcement against individuals giving a CPAP to a prescribed family member is essentially nonexistent. The FDA focuses its enforcement resources on commercial sellers, online marketplaces, and unauthorized distributors, not on a person handing a machine to their spouse.
The more important concern with giving a CPAP to someone you know is clinical, not legal. CPAP pressure settings are prescribed based on a sleep study, and they vary significantly from person to person. A machine set to deliver 12 cm of water pressure for your severe apnea could be uncomfortable or ineffective for someone whose prescription calls for 7. Auto-adjusting (APAP) machines are more forgiving here because they titrate pressure within a range, but even those have prescribed minimum and maximum settings. The recipient should take the machine to their sleep doctor or DME provider to have it reprogrammed to their prescription before using it.
Why the Resale Market Stays Underground
Despite the legal restrictions, a gray market for used CPAP machines persists. The economics drive it. A new CPAP machine costs $500 to $3,000 depending on the model, and insurance coverage is not universal. High-deductible plans may leave patients paying most of the cost out of pocket. People who need a CPAP but cannot afford one, or who are traveling and want a backup unit, sometimes turn to informal sales. Meanwhile, the people selling are often sitting on a machine they no longer use because they switched models, lost weight, or had successful surgery for their apnea, and they want to recoup some of the cost.
The gap between a legitimate market need and a restrictive regulatory framework is where the gray market lives. Authorized resellers help bridge the gap, but the prices they offer sellers are low, and the prices they charge buyers, while cheaper than new, are still substantial. Some patient advocacy groups have argued that the FDA’s approach to secondhand CPAP sales is overly rigid for a device that, while classified as Class II, poses relatively low risk when used as intended compared to other devices in the same class. That argument has not gained regulatory traction, and the prescription requirement remains firmly in place.
Manufacturer Trade-In and Recycling Programs
ResMed, the largest CPAP manufacturer, and a few smaller companies occasionally run trade-in promotions through their DME partners. These programs let you send in an old machine and receive a discount on a new one. The availability varies by region and by the specific DME supplier, so it is worth asking your provider when you are upgrading. Trade-in programs have the advantage of keeping the transaction entirely within the authorized supply chain, so there is no legal ambiguity.
If your machine is too old or damaged to sell or donate, recycling is the responsible disposal route. CPAP machines contain electronic components, lithium batteries in some portable models, and plastics that should not go into a standard landfill. E-waste recycling programs in most municipalities will accept a CPAP machine. Some DME suppliers will take back old equipment for recycling as well. Given the sheer volume of CPAP machines in circulation, with millions of active users in the United States alone, responsible end-of-life handling is a growing concern in the sleep medicine community.
State Laws Add Another Layer
Federal FDA regulations set the floor for CPAP sales, but individual states can and do add their own rules. Some states have specific statutes governing the resale of durable medical equipment that go beyond what the FDA requires. These may include additional licensing requirements for resellers, specific sanitization standards, or restrictions on which types of equipment can be resold at all. A handful of states have enacted “right to repair” laws that touch on medical devices, though these generally address the ability to repair equipment you already own rather than the ability to sell it to someone else.
If you are considering selling through an authorized reseller, the reseller handles state compliance as part of their business. If you are contemplating a more informal transfer, the state you live in matters. Checking with your state’s department of health or board of pharmacy, which often oversees medical device distribution, can tell you whether there are additional hoops beyond the federal prescription requirement. This is one of those areas where the rules are annoyingly fragmented, and what is tolerated in one state may draw a fine in another.
Insurance Considerations After You Sell or Give Away Your Machine
If your CPAP was purchased through insurance, check whether there are any strings attached before you sell or donate it. Some insurance plans, particularly Medicare, structure CPAP acquisition as a rental-to-own arrangement. Under Medicare’s rules, you rent the machine for 13 months before it becomes yours. If you try to sell a machine before that rental period is complete, the equipment technically still belongs to the DME supplier, and selling it could create a billing dispute or even a fraud issue. Once the rental period ends and ownership transfers to you, you are free to do with it as you wish within the bounds of FDA regulations.
Private insurers sometimes have similar rental structures or clawback provisions. If your plan paid for the machine and you sell it within a certain window, the insurer could argue that you benefited twice from a device they subsidized. This is rare in practice, but it is worth checking your plan documents or calling your insurer before listing the machine with a reseller. The last thing you want is an insurance headache over a $100 resale.