Do I really need a prescription to buy a machine? Yes. CPAP machines are classified by the FDA as Class II Medical Devices, meaning you need a valid prescription from a doctor to purchase the machine and the masks.

How much does a CPAP machine cost? Prices typically range from $700 to over $1,000 for a standard machine. Insurance often covers a portion, but coverage varies by provider and deductible.

What is the difference between CPAP and BiPAP? A CPAP delivers fixed pressure. A BiPAP (Bilevel Positive Airway Pressure) delivers two distinct pressures: a higher one when you inhale and a lower one when you exhale, which can be more comfortable for some users.

Do I have to use it every single night? Yes. To get the full health benefits and stay acclimatized to the therapy, you should use it for every sleep, including naps.

Which mask type is best for me? Full Face: Best if you breathe through your mouth. Nasal Mask: Covers just the nose; good for restless sleepers. Nasal Pillows: Sits at the nostrils; best for claustrophobia or facial hair.

Why is my mask leaking air into my eyes? This usually means the mask is too loose, too tight, or the wrong size. Old silicone cushions also lose their seal and need replacement.

How do I stop the mask from leaving red marks on my face? Red marks often mean you are overtightening the straps. You can try mask liners (soft fabric barriers) or a memory foam cushion to reduce irritation.

What if I feel like I'm suffocating or can't exhale? You may need a machine with EPR (Expiratory Pressure Relief), which slightly lowers the pressure when you breathe out to make it feel more natural.

Do I really need to use distilled water? Yes. Tap water contains minerals that cause buildup (scaling) inside the machine, which can damage the motor and harbor bacteria.

How often should I clean my equipment? Daily: Wash the mask cushion and empty the water chamber. Weekly: Wash the tubing, headgear straps, and water chamber with mild soapy water.

Do I need one of those automated ozone/UV cleaning machines? The FDA has not authorized these devices for cleaning CPAP machines, noting they may damage equipment or cause respiratory irritation. Mild soap and warm water remain the recommended cleaning method.

When should I replace my supplies? Even with cleaning, parts degrade. Filters: Every 2–4 weeks. Mask Cushions: Every 1–3 months. Tubing/Water Chamber: Every 6 months.

Why do I wake up with a dry mouth? This often happens if your mouth falls open during sleep (air escapes, drying you out). You may need a chin strap or to switch to a full-face mask. Increasing the humidity setting also helps.

What is "rainout" (water in the hose)? When warm, humid air hits a cold room, it condenses into water droplets in the tube, which can splash your face. You can fix this by using heated tubing or a hose cover.

Why is my stomach bloated/gassy in the morning? This is called aerophagia (swallowing air). It happens if the pressure is too high or you gulp air while sleeping. Discuss adjusting your pressure settings with your doctor.

Is the machine loud? Modern machines are very quiet (whisper-quiet). If yours is making loud or unusual noises, it may have a clogged filter or a failing motor.

Can I bring my CPAP on a plane? Yes. The TSA considers it a medical device, so it does not count as a carry-on bag. You should never check it; always carry it on to prevent damage or loss.

Do I need a special battery for camping? Yes. Standard machines require a wall outlet. For camping, you will need a specific CPAP battery pack or a specialized travel CPAP model.

Will my machine work internationally? Most modern CPAP machines have universal power supplies (100–240V), meaning you only need a plug adapter for the wall shape, not a voltage converter.

Can I use water from a bottle if I can't find distilled water while traveling? In a pinch, yes. Bottled water is safer than tap water, but distilled is always preferred to prevent mineral buildup.