CPAP accessories are the replacement parts and add-ons that keep your CPAP therapy setup fitting, sealing, and running the way it should—items like mask cushions or nasal pillows, headgear, frames, elbows, filters, tubing, humidifier parts, and cleaning supplies. Full CPAP machines and complete CPAP masks are separate regulated items. 
Start with your exact CPAP machine model and CPAP mask model, then match the part type you’re replacing (cushion/pillows, headgear, frame, elbow, filters, tubing) and the correct size if applicable. If a listing doesn’t explicitly name your model as compatible, don’t assume it will fit. 
Many standard CPAP hoses use a universal 22mm cuff connection that fits most CPAP masks and standard CPAP machines, but there are exceptions (for example, slim hoses or proprietary connections on some travel setups). Before buying, confirm the connection type and whether your device uses standard tubing or a model-specific hose. 
If your mask seal changed, the first accessory to check is usually the replaceable cushion or nasal pillows that contact your face, then headgear stretch and how the frame/elbow connection snaps together. A worn cushion can lose its seal even if it looks okay, and a loose connection can mimic a leak. 
When airflow feels off or the machine sounds louder, check filters first, then inspect your tubing/hose for pinholes, stiffness, or loose ends that can cause small leaks. These are common wear items that can change how therapy feels without changing your pressure settings, so they’re a practical first step before replacing larger parts. 
Standard tubing is the basic air path, while heated tubing adds an electrical heating element designed to work with compatible humidification systems to reduce condensation (“rainout”) and stabilize humidity delivery. Heated hoses are often machine-specific because electrical connections aren’t standardized, so only buy heated tubing listed for your exact device. 
Dryness or rainout is often addressed by confirming your humidification setup and then choosing compatible humidifier accessories or heated tubing where your machine supports it. Heated tubing is widely used to prevent condensation by keeping air temperature stable through the hose, but it only works properly when matched to the correct machine system. 
In the U.S., you typically need an Rx for a CPAP machine and an assembled, complete CPAP mask, while many replacement parts (like cushions, headgear, frames, and some accessories) may be sold without an Rx depending on how they’re classified and sold. If you’re buying a full mask system, expect an Rx requirement. 
Replacement timing depends on the accessory and how fast it wears, but many people use schedules as a planning baseline—mask cushions/pillows and filters are commonly replaced more frequently than headgear or frames, and tubing is often replaced on a multi-month cycle. Use manufacturer guidance or insurer schedules if you rely on coverage. 
For travel, prioritize accessories that reduce downtime and pack volume: the correct filters, a compatible tubing option, protective cases, and power-related items matched to your specific travel CPAP model. Don’t assume home accessories work on compact travel devices—compatibility and connector style can change, especially for heated hose or humidification parts. 
