If you’ve ever been woken up by a gurgling sound in your CPAP hose or a splash of water on your face, you’ve experienced CPAP rainout. This common issue can be disruptive to your therapy, but the good news is that it’s preventable. This guide will explain what causes rainout and what you can do to stop it.
What Causes CPAP Rainout?
CPAP rainout occurs when the warm, humidified air from your CPAP machine cools as it travels through the hose to your mask. As the air cools, the moisture in it condenses, forming water droplets inside the hose. This is more common in cooler bedrooms where the temperature difference between the air in the room and the air in the hose is greater.
How to Prevent CPAP Rainout
There are several effective ways to prevent CPAP rainout:
•Use a Heated Hose: A heated hose keeps the air warm as it travels to your mask, preventing condensation from forming. This is one of the most effective solutions for rainout.
•Adjust Your Humidifier Settings: Lowering the humidity setting on your machine can reduce the amount of moisture in the air, which can help prevent condensation.
•Insulate Your Hose: A hose cover or wrap can help insulate the hose, keeping the air inside warmer and reducing the chance of rainout.
•Keep Your Bedroom Warmer: A warmer bedroom can reduce the temperature difference between the air in the room and the air in the hose, making rainout less likely.
