A hose cover is a great solution for patients who live in cooler, dry-air climates and require additional moisture to provide a more comfortable sleep.
A hose cover may also help to prevent a phenomenon called rainout in CPAP tubing. Rainout occurs when warm air travelling from the heated humidifier to the mask starts to cool, forming condensation on the inside of the hose. This can cause water to pool, making a gurgling sound which can also cause the water to splatter the face. By insulating the hose, the air remains warm as it travels, decreasing the rainout effect and providing a more peaceful sleep.