Tubing
Standard (unheated) CPAP tubing
The plain hose between the machine and the mask; it wears out and should be replaced on a regular schedule.
Why it helps
Tubing develops tiny cracks and holes over time, and a leak in the hose acts like a mask leak. Old tubing is also harder to keep clean. Medicare codes standard tubing as A7037 with a usual maximum of 1 per 3 months, and ResMed lists a 6 month design life for AirSense 11 air tubing.
How to choose
Most CPAP machines and masks use a standard 22 mm connection (the AirSense 11 has a 22 mm conical outlet), so standard tubing fits most setups, but check your manual for the tubes it lists. ResMed lists ClimateLineAir 11, SlimLine and Standard 2 m tubing as compatible with the AirSense 11. Slim tubing is lighter and less bulky; some machines need to know which tube type is attached, which is set in the comfort or options menu. Look for a 6 ft length unless you need more reach, since longer tubing can add resistance and condensation.
Plain tubing is more prone to rainout in a cold room than heated tubing. Replace any tube with holes, tears or cracks.
Frequently asked questions
How often should CPAP tubing be replaced?
Medicare's usual maximum is 1 tube every 3 months, and ResMed lists a 6 month design life for AirSense 11 tubing. Replace sooner if you see holes, tears or cracks.
Will any CPAP hose fit my machine?
Most use a standard 22 mm connection, but heated tubes and some slim tubes are machine specific. Check the tube types your manual lists, and set the tube type in the machine's menu if it asks.
Sources
Last reviewed October 11, 2026. How we research · Report an error