Home CPAP Therapy CPAP Troubleshooting
CPAP Troubleshooting
CPAP Troubleshooting for Common Equipment and Comfort Concerns
CPAP questions are common, especially while you are becoming familiar with your mask, machine, humidifier and bedtime routine. Review practical first steps and learn when additional support may be needed.
Need ongoing help? Visit CPAP Follow-Up & Support.
Troubleshooting at a Glance
Start With These Four Checks
- Confirm the equipment is assembled correctly
- Reposition the mask before tightening it
- Inspect components for wear or damage
- Review the manufacturer’s instructions
Do not independently change prescribed pressure settings while troubleshooting.
Before You Troubleshoot
Start With the Equipment, Fit and Routine
Many common concerns may relate to mask position, cushion condition, headgear adjustment, tubing placement, humidifier setup, cleaning, maintenance or worn supplies.
This page provides general equipment guidance. It does not replace your prescription, manufacturer instructions or advice from an appropriate healthcare professional.
The Troubleshooting Process
A Practical Way to Review a CPAP Concern
The exact steps may vary by equipment and concern, but this sequence provides a useful starting point.
01
Identify the Concern
Determine whether the problem involves the mask, tubing, humidifier, machine, comfort or cleaning routine.
02
Check Assembly and Position
Confirm each component is connected and positioned according to its instructions.
03
Inspect for Wear or Damage
Look for stretched headgear, worn cushions, cracked tubing, loose connections or damaged parts.
04
Try One Safe Adjustment at a Time
Reposition equipment or review the demonstrated fitting and operating process.
05
Contact Support When It Continues
Contact MedPro when the concern is not resolved or the required next step is unclear.
Choose a Concern
Where Are You Having Difficulty?
Start with the category that most closely matches what you are experiencing.
Mask and Fit Concerns
- Leaks
- Mask movement
- Pressure marks
- Skin irritation
- Difficulty keeping the mask on
Airflow and Humidification
- Dry mouth or nose
- Congestion
- Water in tubing
- Airflow discomfort
- Humidifier questions
Machine and Equipment
- Noise
- Loose connections
- Damaged tubing
- Display messages
- Power or startup questions
Mask Leak Troubleshooting
Common Reasons a CPAP Mask May Leak
A leak may relate to position, size, adjustment, tubing movement or worn components.
Cushion Position
The cushion may not be sitting in the intended position.
Incorrect Size
The cushion, frame or headgear size may not be suitable.
Uneven Headgear
One side of the headgear may be tighter than the other.
Excessive Tightening
Overtightening can distort the cushion and sometimes worsen leaks.
Tubing Pull
Tubing may pull the mask out of position during movement.
Worn Components
The cushion or headgear may no longer maintain a reliable fit.
Reposition the mask and cushion before tightening the straps further.
Fit and Comfort
Secure Does Not Mean Extremely Tight
Headgear should feel secure rather than painful. The cushion should not be visibly crushed, and the fit should be checked while lying in your usual sleeping position.
The mask should remain reasonably stable during normal movement, and the tubing should not pull against the frame.
Before Tightening the Headgear
- Reposition the cushion
- Check the mask assembly
- Lie in your usual sleeping position
- Start airflow using the instructed process
- Confirm tubing is not pulling
- Inspect the cushion and headgear
Dryness and Congestion
Review More Than One Possible Factor
Dry mouth, nasal dryness and congestion can have more than one contributing factor.
01
Check for Mask or Mouth Leak
Leaks may reduce effective humidification and contribute to dryness.
02
Review Humidifier Setup
Confirm the chamber is filled, assembled and operated according to instructions.
03
Review Cleaning and Equipment Condition
Residue, blocked components or worn equipment may affect comfort.
04
Seek Clinical Guidance When Needed
Continuing or concerning symptoms should be discussed with the appropriate healthcare professional.
Do not independently change prescribed settings to address dryness or congestion.
Tubing Moisture
Why Water May Collect in CPAP Tubing
Condensation may relate to humidification, room temperature, tubing position or equipment configuration.
Possible Contributing Factors
- Humidifier level or configuration
- Cool bedroom temperature
- Tubing position
- Condensation inside the tubing
- Heated-tubing configuration
- Equipment placement
Safe First Checks
- Confirm the chamber is not overfilled
- Keep the machine on a stable surface
- Review tubing placement
- Follow manufacturer instructions
- Empty and dry tubing as instructed
- Contact MedPro if the issue continues
Never place the machine where water could drain into it.
Noise and Airflow
Review the Source Before Assuming the Machine Is Faulty
Noise and airflow concerns can originate from the mask, tubing, connections, filters or equipment condition.
Mask Leak Noise
A leak may create whistling, fluttering or rushing sounds.
Ventilation Sound
Normal airflow exits through the mask’s ventilation openings.
Loose Connection
Tubing, humidifier or mask connections may not be fully secured.
Damaged Tubing
Cracks or holes can produce noise and airflow loss.
Filter or Air-Intake Concern
Follow machine-specific instructions for filter inspection.
Airflow Feels Uncomfortable
Contact MedPro or the appropriate healthcare professional rather than changing prescribed pressure settings.
Machine and Power
Review Basic Connections and Display Information
Messages and startup behaviour vary by manufacturer and model. Start by checking the power connection, confirming that the humidifier and tubing are connected, and noting the exact message shown.
Review the user guide for your equipment and contact MedPro when the message or startup concern continues.
Machine Does Not Start
Check the power supply and wall outlet
Display Shows a Message
Record the exact wording or code
Humidifier Is Not Detected
Confirm the chamber or humidifier is seated properly
Airflow Stops Unexpectedly
Review connections and contact MedPro if it continues
Equipment Appears Damaged
Stop using damaged equipment and contact MedPro for guidance
Equipment Care
Cleaning and Wear Can Affect CPAP Performance
Residue, moisture, incorrect assembly and worn components can contribute to leaks, odours, noise and discomfort.
Mask Cushion
Inspect for residue, stiffness, damage or loss of seal
Headgear
Check for stretching or loss of adjustment
Tubing
Inspect for cracks, moisture and loose connections
Humidifier Chamber
Check for residue, damage or incorrect assembly
Filters
Follow machine-specific inspection guidance
Additional Support
Contact MedPro When the Concern Continues
Use the most relevant support pathway for the concern you are experiencing.
Mask Fitting Support
For continuing leaks, movement, pressure or sizing questions.
Follow-Up Support
For equipment-use, cleaning, routine or supply questions.
Know the Limits of Troubleshooting
Some Concerns Require Healthcare Guidance
MedPro can assist with equipment-related support, while clinical questions should be directed to the appropriate healthcare professional.
Contact MedPro About
- Mask fit
- Equipment assembly
- Cleaning and maintenance
- Compatible replacement supplies
- Common equipment questions
Contact a Healthcare Professional About
- Prescribed pressure or therapy-setting questions
- New or worsening health symptoms
- Questions about diagnosis or treatment effectiveness
- Continuing difficulty despite equipment support
- Concerns outside MedPro’s equipment-support role
MedPro’s website and equipment-support resources are not emergency services. Seek urgent medical assistance when appropriate.
Troubleshooting FAQ
Common Questions About CPAP Equipment and Comfort
Contact MedPro when an equipment-related concern continues.
Why is my CPAP mask leaking?
A leak may relate to cushion position, mask size, uneven headgear, tubing pull, worn components or excessive tightening.
Should I tighten my mask to stop leaks?
Reposition the mask and cushion first. Excessive tightening can distort the cushion, increase pressure and sometimes worsen leaks.
Why does my mask leak when I lie down?
Facial muscles, jaw position, sleeping posture and pillow contact can change the seal. Review the fit while lying in your usual position.
Why am I waking with a dry mouth?
Dry mouth may relate to mask leak, mouth breathing, humidification, environmental conditions or other factors. Contact the appropriate healthcare professional when symptoms continue or concern you.
Why is water collecting in my tubing?
Condensation may relate to humidification, bedroom temperature, tubing position or equipment configuration. Confirm that the chamber is not overfilled and follow manufacturer instructions.
Why is my CPAP machine making noise?
Noise may come from a mask leak, ventilation airflow, loose connection, damaged tubing, filter issue or the machine itself. Identify the source before assuming the machine is faulty.
What should I do if the machine shows a message?
Record the exact wording or code, review the user guide and contact MedPro when the message continues or the next step is unclear.
Why do I remove the mask while sleeping?
This may relate to leaks, discomfort, dryness, mask movement or difficulty becoming accustomed to the equipment. Follow-up support may help identify the contributing issue.
Can I change my pressure settings?
Do not independently change prescribed pressure settings. Questions about therapy settings should be reviewed through the appropriate clinical process.
What should I do if equipment is damaged?
Stop using visibly damaged equipment when continued use may be unsafe and contact MedPro for guidance about inspection or replacement.
When should I replace CPAP parts?
Replace components when worn, damaged or no longer functioning as intended, following manufacturer guidance and applicable coverage requirements.
How do I contact MedPro for troubleshooting support?
Call 1-888-310-1444 or contact a MedPro clinic to discuss the concern and confirm what equipment should be brought.
Replacement Equipment
Worn or Damaged Parts May Need Replacement
Confirm the model, size and compatibility of replacement components before ordering.
Humidifier Parts and Filters
Chambers, filters and compatible accessories.
Confirm the equipment model, part number, size and compatibility before ordering.
Related CPAP Resources
Continue Your CPAP Journey
Direct links to practical CPAP education and support.
CPAP Support
Still Having Trouble With Your CPAP Equipment?
MedPro’s respiratory care team can help you review mask fit, equipment use, cleaning, worn components and available follow-up support.