The ResMed ClimateLine™ heated tubing is 6ft in length and solely designed to be used with the ResMed S9 Series CPAP and VPAP machines. The tubing has an electrical connector at one end that will only connect to a ResMed H5i™ Heated Humidifier. This electrical connection allows the tubing to heat the element contained in the corrugated exterior of the tube. The heating of the element keeps the humidity that is being provided by the H5i™ Heated Humidifier consistent throughout the tube and reduces the chance of "rainout" (excessive condensation build up in the tube or mask).
The heating element is a wire that goes along the corrugated exterior of the tube but does not affect the flexibility of the tubing. The smooth interior allows the cleaning process to be easier as it reduces any chances of soap or water being left inside after cleaning and helps the drying process.