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Common CPAP Machine Issues

September 15, 2025

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7 minutes read

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Troubleshooting Common CPAP Machine Issues
CPAP therapy is one of the most effective treatments for sleep apnea, but users often face CPAP problems such as dry mouth, mask leaks, or noisy machines. At CPAP Discount Warehouse, we understand these challenges and provide practical solutions to make your therapy more comfortable and effective.

Common side effects

Dry mouth and throat

A dry mouth and throat usually happen when air escapes through the mouth while sleeping. This problem often affects people using nasal masks who naturally breathe through their mouth. Solutions include switching to a full-face mask, wearing a chin strap to keep the mouth closed, or enabling heated humidification. Drinking a small amount of water before bed can also reduce dryness.

Dry or runny nose

Users of CPAP machines are often reported to have issues with nasal dryness or congestions. These problems are mostly due to persistent airflow. The dry and pressurized airflow considerably narrows down the nasal passages. Use of saline sprays before bed assists in maintaining the nasal tissues in a balanced and hydrated state. The use of heated humidifiers and heated tubing also aids in providing the moisture to ease the discomfort.

Dry eyes

Dry eyes may occur when air escapes from the mask and blows toward the eyes. The most common causes are a poor seal or straps that are too loose. To fix the problem, try readjusting the straps or selecting a different mask shape that fits more securely. Adding a heated humidifier can also help by reducing overall dryness.

Claustrophobia

Claustrophobic feelings are common, particularly with full-face masks that cover both the nose and mouth. This often comes from anxiety about restricted breathing or confinement. Gradual exposure to the mask while awake can help increase comfort over time. Choosing a smaller nasal pillow mask or practicing relaxation techniques before bed can also reduce feelings of anxiety.

CPAP Machine Noise

CPAP machine noise can be bothersome and disrupt sleep for both the user and their bed partner. Troubleshooting:
  • Machine Placement: Position the CPAP machine on a stable surface away from the bed to minimize vibrations and noise. Placing the machine on a carpet or soft surface can help absorb sound.
  • Machine Maintenance: Regularly clean and maintain the CPAP machine and its components to ensure smooth and quiet operation. Follow the manufacturer's guidelines for maintenance.

Irritant contact dermatitis

Some CPAP users develop redness, itching, or rashes at the points where the mask contacts the skin. This is usually caused by friction, trapped moisture, or sensitivity to the mask materials. A good way to resolve it is by using mask liners, switching to a hypoallergenic cushion, or adjusting the mask fit for less pressure. Cleaning both the mask and your skin before bed can also reduce irritation.

Headaches

Headaches are sometimes linked to incorrect CPAP pressure settings or sinus congestion caused by strong airflow. This can be more common during the first weeks of therapy. The best solution is to have your provider check pressure settings, especially if you are using a ResMed AirSense 10 or AirSense 11. Keeping filters clean and ensuring good air quality can further reduce sinus-related headaches.

Difficulty falling asleep

Adjusting to sleeping with a CPAP machine can take time, but a few strategies can help ease the transition.

Practice Wearing the Mask During the Day: Wearing your CPAP mask for short periods while awake can help you get used to its feel, making it more comfortable at bedtime.

Use the Ramp Feature: Many CPAP machines offer a ramp function that starts with lower air pressure and gradually increases to your prescribed setting as you fall asleep. This can make breathing feel more natural and reduce discomfort.

Follow Healthy Sleep Habits: Maintaining good sleep hygiene can improve your ability to fall asleep. Try to:

+ Exercise regularly, but avoid vigorous activity close to bedtime.

+ Limit caffeine and alcohol intake in the evening.

+ Establish a relaxing bedtime routine, such as taking a warm bath or reading.

+ Use a white noise machine if background noise helps you sleep.

With time and consistency, these adjustments can help you fall asleep more easily while using your CPAP machine, leading to better sleep and improved health.

Excessive gas and bloating

Some people experience bloating, burping, or stomach discomfort from swallowing air during CPAP therapy. This condition, called aerophagia, often results from high pressure settings. Adjusting the pressure with help from a provider or using features such as expiratory pressure relief (EPR) can make a big difference. Sleeping with your upper body slightly elevated may also ease symptoms.

Common CPAP Machine Issues

Solutions to CPAP Problems

CPAP machine

CPAP machine is not working

Your CPAP machine won't turn on? Check the power cord, the outlet, and the power supply connection first. As with most electrical devices, we suggests using a different outlet to eliminate any electrical faults. ResMed AirSense 10 and AirSense 11 users should check that the power supply light is on and that the plug is firmly in place. If the machine will not power on, get in touch with the equipment provider or manufacturer for repair service.

CPAP machine is too noisy

Noise coming from a CPAP machine can be distracting and may signal a problem with the motor, tubing, or filter. ResMed suggests first checking that the air filter is clean and that the tubing is firmly connected. Positioning the machine on a flat, stable surface can also reduce vibration noise. If the sound increases over time, schedule a professional checkup to ensure the motor is functioning properly.

Getting tangled in your CPAP tube

Many patients report that their CPAP tubing wraps around them during sleep, interrupting rest. Manufacturers recommend using a tube management system or routing the tubing over the headboard to keep it out of the way. Lightweight and flexible tubing options, such as those from Fisher & Paykel, may also make movement easier. Consistently placing the tube in the same position each night can prevent tangling.

Keeping your CPAP from falling off the table

CPAP machines can sometimes slip or fall when placed on narrow or unstable nightstands. To prevent this, place the device on a wide, flat surface or consider positioning it on the floor beside the bed. Using a non-slip mat or anti-vibration pad under the machine can add stability. Both ResMed and Fisher & Paykel emphasize securing the machine to avoid damage and ensure safe operation.

Dry mouth and throat and a runny nose

If you still experience dryness or nasal discomfort despite using your CPAP, it may be related to mask leaks or humidifier settings. ResMed advises checking the water chamber daily and adjusting humidity levels for added comfort. Ensuring the mask is properly sealed can prevent air from escaping through the mouth. Using heated tubing can also stabilize airflow and reduce irritation.

CPAP humidifiers

Why should I guard against CPAP humidifier water spills?

Water spills can damage the CPAP device and increase the risk of electrical issues. ResMed recommends always removing the water chamber before moving the machine and ensuring it is seated correctly before use. Keeping the device on a stable, flat surface also helps avoid accidental tipping and leakage.

Why use distilled water for a CPAP machine?

Distilled water prevents mineral buildup inside the humidifier chamber and extends the life of the device. Tap water often contains minerals that can create scale, harbor bacteria, and damage the heating plate. Both Fisher & Paykel and ResMed recommend using distilled water daily to keep the humidifier clean and safe.

Do I need to clean the water chamber every day?
Daily cleaning of the water chamber is strongly advised by manufacturers. Rinse with mild soap and warm water, then allow the chamber to air dry before reassembly. This routine helps prevent mold, bacteria, and mineral residue from affecting your therapy.

CPAP masks

Why is my CPAP mask giving me a rash?

Skin irritation can result from poor cleaning, over-tightened straps, or a reaction to the mask material. ResMed suggests washing the mask daily with mild soap and water to remove oil buildup. If irritation continues, try mask liners or request a hypoallergenic mask option from your supplier.

Why do I keep taking my sleep mask off in my sleep?
Removing the mask unconsciously at night usually indicates discomfort or claustrophobia. One solution is to practice wearing the mask while awake, gradually increasing the time until it feels more natural. Fisher & Paykel also recommends experimenting with different mask sizes or types to improve comfort.

How to deal with CPAP claustrophobia?

Claustrophobia is a common challenge with full-face masks. Experts recommend gradual desensitization, such as wearing the mask during the day while reading or watching TV. Switching to a nasal pillow design or using relaxation exercises before bedtime can also reduce anxiety and improve compliance.

How to stop sore, swollen, and irritated puffy eyes from CPAP?

Eye problems usually occur when air leaks upward from the mask into the eyes. ResMed recommends adjusting the fit, replacing worn-out cushions, or choosing a different mask style to create a better seal. Mask liners may also help reduce leaks and protect sensitive skin around the eyes.

>>>  Why does my CPAP mask get water in it?

CPAP functionality issues

Why is my humidifier not filling with water?

If the humidifier chamber does not fill, it may be inserted incorrectly or have a blockage. Check for cracks or leaks in the chamber and replace it if necessary. Always follow manufacturer instructions to ensure correct placement in the device.

Why is my ResMed CPAP humidifier not heating?

A humidifier that fails to heat could be due to a loose power connection or a faulty heating plate. Verify that the machine is connected properly and that the water chamber is seated correctly. If the issue continues, contact ResMed support for inspection or replacement.

Why is my CPAP machine getting noisier?

Over time, CPAP machines may produce more noise due to motor wear or clogged filters. Regularly replacing filters and cleaning the tubing can reduce unnecessary sounds. If the noise persists, consult your equipment provider to determine whether servicing or replacement is needed.

Most CPAP problems can be solved with simple adjustments, proper cleaning, and the right equipment. CPAP Discount Warehouse offers trusted advice and quality products to help you get the best results from your therapy. With the right support, you can enjoy better sleep and improved health every night.

 

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