If you use a CPAP machine for sleep apnea, you probably know the drill: clean the mask, tube, and water chamber regularly to avoid bacteria and mold. For years, many people turned to ozone-based cleaning devices like SoClean to make that task easier. These products promise to sanitize using ozone, a form of oxygen that kills germs on contact. But what the marketing didn’t tell you is that ozone can break down the materials inside your CPAP equipment. That breakdown releases chemical byproducts that you then breathe in every night. This isn’t just a hygiene concern. It’s the center of a growing wave of legal liability claims.
The problem starts with the foam inside CPAP machines. To quiet the motor, manufacturers line the device with polyurethane foam. Ozone reacts with that foam, causing it to degrade more quickly than it normally would. The same reaction also damages the silicone in the mask and the plastic in the tubing. Once those materials break down, they release volatile organic compounds and other irritants into the air stream. You don’t need a chemistry degree to see the danger. If you’ve been using an ozone cleaner for months or years, you could be inhaling fine particles and chemical gases every time you sleep. Some people report coughing, chest tightness, and shortness of breath. Others develop asthma-like symptoms or chronic sinus irritation. In more serious cases, the inhaled particles can lodge deep in lung tissue, causing inflammation and scarring.
Here’s where the legal claims come in. The makers of ozone cleaning devices face lawsuits under a basic theory: they knew or should have known that their products could damage CPAP equipment and harm users, yet they never gave any warning. This is called a failure to warn in legal terms, but at its core, it’s simple negligence. A company sells a product that, used as directed, causes damage. It has an obligation to tell you about that risk. Instead, these companies marketed their ozone cleaners as safe and even necessary for CPAP hygiene. They sold a device that was supposed to protect your health but actually undermined it. That’s a textbook product liability case.
The plaintiffs in these claims aren’t alleging a one-in-a-million accident. Independent testing by academic labs and lawsuits from users have shown that ozone exposure from these cleaners is common, not rare. Even the Food and Drug Administration weighed in, warning that ozone gas is not a safe method for cleaning medical devices. But that warning came years after these cleaners had already been sold in the mass market. By then, thousands of CPAP users had been exposed to toxic byproducts.
What makes these claims legally strong is the lack of informed consent. Nobody using a CPAP device signs a waiver saying they understand ozone cleaners could break down their equipment. On the contrary, consumers were told that these cleaners were the best way to maintain their machines. The manufacturers of the cleaners even recommended their products to CPAP users directly, often in national advertising campaigns. When you use a product exactly as the manufacturer instructs and you get injured, you have a very powerful claim. You didn’t alter the product. You didn’t misuse it. You just followed directions. And the company didn’t warn you about the consequences.
There’s also a second layer of liability aimed at the CPAP machine makers themselves. They designed machines with foam that degrades under ozone exposure. Some plaintiffs argue that the CPAP manufacturers should have used more durable materials or at least warned consumers not to use ozone cleaners. That claim is harder to prove, because the CPAP makers didn’t produce the ozone cleaners. But they did know that ozone was a common cleaning method. If they didn’t test their machines against it, they may have been negligent in their duty to ensure their product was safe for reasonably foreseeable uses. In the legal world, this is still an open question, but it keeps more defendants at the table.
If you’re thinking about joining this kind of claim, you need to understand what’s at stake. Injuries from ozone byproducts are not always immediate. They often build up over months or years. That makes causation tricky. But courts are increasingly accepting medical evidence that shows a clear link between ozone exposure and respiratory damage. In some cases, the physical damage inside a machine can be examined and documented, proving that ozone caused the degradation. Evidence like that turns a messy dispute into a straightforward question of who is responsible.
The bottom line is that ozone cleaners for CPAP machines represent a failure of basic consumer protection. People trusted a product to keep their medical device clean, and that product silently poisoned the air they breathed. Lawsuits are not just about money. They are about forcing companies to own up to what they knew. If you used an ozone cleaner and developed breathing problems, you aren’t imagining things. The science backs your experience. And the law has a name for what happened to you: a product that was unsafe by design and sold without a warning. That’s exactly the kind of claim that mass torts exist to address.
