: Unlike the machine, masks and tubing are considered personal items and are rarely accepted by resellers once opened.

: Used machines must be properly sanitized and tested for function (like air leaks or pressure accuracy) before being reused by someone else. Important Selling Tips

: Reach out to local durable medical equipment (DME) providers to see if they have a buy-back or trade-in program for newer models. Why Strict Rules Exist

: Companies like SecondWind CPAP specialize in buying used CPAP and BiPAP machines. They provide a legal way to get compensation for your device while ensuring it is properly refurbished for another user.

: The value of a used machine is often based on its "run hours." Lower hours typically mean a higher buy-back price. Prepare Documentation : Be ready to provide the brand, model (e.g., ResMed AirSense 11 Go to product viewer dialog for this item.

), and any included accessories like humidifiers or carry cases.