Yes, you need a prescription from an appropriate medical professional for:
   

• CPAP devices

• humidifiers

• assembled masks.

To receive a prescription, you will need to set up an appointment with your doctor to discuss your sleep concerns. The doctor is likely to refer you on for a sleep test, the results from which will indicate whether you are experiencing sleep apnea and should be prescribed CPAP* therapy.   

This may seem like a lengthy process, but a prescription will provide you with much-needed details, such as what type of sleep apnea you have, how your therapy should be undertaken, the appropriate pressure setting for your CPAP machine and the style of mask best suited to you.  

In effect, a prescription ensures you get access to a therapy that is individualized so you have the best chance of enjoying healthier sleep.  

While you need a prescription for CPAP devices, humidifiers and assembled masks, it is unnecessary to get one for replacement device and mask parts and accessories.