A variety of CPAP, or continuous positive airway pressure, machines exist, but the highest-rated ones as of 2015 are the AirSense 10 AutoSet, S9 AutoSet and PR System One REMStar 60 Series Pro machines, according to CPAP.com. All three machines cost less than $900 and feature many functions.
The AirSense 10 AutoSet CPAP machine made by the ResMed company has a built-in humidifier, notes CPAP.com. The machine is auto-titrating, which means that it adjusts the pressure for each breath and delivers the minimum pressure needed to maintain the airway. Because the humidifier is built-in, the machine is more compact and easier to handle. The machine also displays usage data such as events per hour, average usage and leak rate.
The S9 AutoSet CPAP machine made by the ResMed company also has a built-in humidifier and is specifically for women, explains CPAP.com. The machine has similar features as the AirSense 10, as they share a manufacturer. However, the S9 AutoSet also has feminine styling and a Mask-Fit system that allows users to preset a mask type, such as nasal, pillows or full face.
The PR System One REMStar 60 Series Pro CPAP Machine made by the Philips Respironics company has a humidifier with a lot of surface area for greater humidification output, notes CPAP.com. The machine is also resistant to water damage and has smart technology modes that adjust to a person's breath.