The term "CPAP" is often used to refer to one of several types of devices that help treat obstructive sleep apnea. Traditional CPAP machines for sale deliver a consistent level of pressurized air through your nose, mouth, or both to keep your airway open while you sleep. At CPAP Supply USA, we carry affordable CPAP machines from top brands with free shipping and 100% price protection if you find a better offer within a week of your order. As always, we recommend speaking with your doctor before you buy a CPAP machine to understand which type of therapy is right for you.