Having moisture in your CPAP hose can be a very uncomfortable and annoying problem. Using the machine while it is in there, will not likely hurt you; however, it may make your therapy less effective. Many hoses cause an effect called rainout where water gets in your hose and on the outside of the tube because of the heated humidifier and the ambient temperature in your home. If this is the case for you and you are getting the moisture in your hose when you are wearing it, one of the best solutions available on the market today is a heated hose.