CPAP hoses connect your machine to your mask to deliver pressurized air while you sleep. Most devices come with standard CPAP tubing, but there are several reasons you may consider replacing it. Most commonly, they can wear out and collect bacteria over time, so we recommend ordering a CPAP replacement hose once every three months to ensure optimized therapy. Heated CPAP hoses are also available if you have frequent water buildup overnight. While most CPAP machine hoses have a standardized diameter, they're not universally compatible with every machine. Check the specifications of each one to make sure it matches with your device before ordering. Shop affordable replacement tubing for your CPAP machine at CPAP Supply USA with free shipping over $49.