CPAP Machine Side Effects

CPAP machine side effects range from mild discomfort like dry mouth and nasal congestion to more disruptive issues such as aerophagia, skin irritation, and claustrophobia. Most side effects are manageable with proper mask fit, humidifier adjustments, and pressure settings optimization, but some require clinical intervention. According to the American Academy of Sleep Medicine, continuous positive airway pressure therapy remains the most effective treatment for obstructive sleep apnea, yet an estimated 30 to 50 percent of patients struggle with adherence due to side effects. This article is for anyone currently using CPAP, considering CPAP therapy, or exploring alternatives after experiencing problems. It covers every common and uncommon side effect, practical fixes, when a side effect signals a deeper issue, and how sleep longevity testing can reveal whether your therapy is actually reversing the biological damage that untreated sleep apnea causes.

Quick Answer

CPAP machine side effects include dry mouth, nasal congestion, skin irritation, aerophagia (stomach bloating from swallowed air), mask leak, claustrophobia, pressure sores, and condensation buildup known as rainout. Most side effects resolve with mask refitting, humidifier use, or pressure settings adjustments. Serious complications like sinus infections or persistent air leakage require physician evaluation. Dumbo Health's sleep longevity membership helps CPAP users track whether therapy is improving their biological age through biomarker testing and physician-guided care.

Key Takeaways

• Dry mouth, nasal congestion, and skin irritation are the three most common CPAP machine side effects, and all three can usually be resolved without stopping therapy
• Aerophagia affects roughly 16 percent of CPAP users according to published clinical data and may require pressure settings adjustment or switching to a BiPAP device
• Mask fit is the single most important factor in preventing air leakage, skin abrasions, and pressure sores
• Untreated sleep apnea accelerates biological aging by increasing inflammation, raising blood pressure, and disrupting metabolic health, which is why abandoning CPAP without an alternative is risky
• Dumbo Health's Core membership tracks 51 sleep-longevity biomarkers twice a year for $0.99 a day, giving CPAP users objective data on whether treatment is reversing biological damage
• Oral appliance therapy is a clinically validated alternative for mild to moderate obstructive sleep apnea when CPAP side effects prove intolerable

Why CPAP Side Effects Deserve More Attention Than They Usually Get

CPAP therapy works by delivering pressurized air through a mask to keep the airway open during sleep, preventing apnea events that cause oxygen desaturation, fragmented sleep, and downstream organ damage. The therapy is effective. The National Heart, Lung, and Blood Institute describes continuous positive airway pressure as the primary treatment for moderate to severe obstructive sleep apnea. But effectiveness alone does not guarantee adherence.

The gap between prescribing CPAP and a patient actually using CPAP every night is where side effects do the most damage. A machine that sits unused on a nightstand does nothing for cardiovascular risk, cognitive impairment, or biological aging. Understanding each side effect, why it happens, and what to do about it is the difference between therapy that transforms your health and therapy you abandon within three months.

What most CPAP guides miss is the biological context. Every night you skip therapy because of discomfort, your body is accumulating the same inflammatory and metabolic stress that untreated sleep apnea causes. Dumbo Health's SleepLongevityAge assessment gives CPAP users a measurable way to track whether their therapy is actually moving the needle on biological aging, not just suppressing snoring.

KEY TAKEAWAY: CPAP side effects are the leading reason patients stop therapy, and stopping therapy without an alternative accelerates biological aging and increases cardiovascular risk.

Understanding the most common side effects starts with the airway itself, so the next section breaks down respiratory side effects first.

Respiratory and Airway Side Effects of CPAP Therapy

Dry nose, nasal congestion, and mouth dryness are the side effects CPAP users encounter most frequently because the therapy directly involves the airway. The Sleep Foundation notes that continuous airflow at elevated pressure can dry out nasal passages and trigger inflammatory responses in the upper airway.

Dry Mouth and Xerostomia

Dry mouth during CPAP therapy typically results from mouth breathing while wearing a nasal mask or nasal pillow mask. When the mouth opens during sleep, pressurized air escapes through the mouth, bypassing the nasal humidification pathway and leaving oral tissues dehydrated. Xerostomia, the clinical term for chronic dry mouth, can increase the risk of dental decay and gum disease if left unaddressed.

Solutions include switching to a full-face CPAP mask that covers both the mouth and nose, using a chin strap to keep the mouth closed during sleep, and increasing the humidification level on your device. A heated humidifier integrated into the CPAP machine adds moisture to the airflow before it reaches the airway, reducing mouth and nose dryness significantly.

Nasal Congestion and Dry Nose

Nasal congestion from CPAP use occurs when the nasal lining responds to continuous airflow by producing excess mucus or swelling. Some patients develop rebound congestion that worsens over time. Dry nose, the opposite problem, results from insufficient humidification, especially in low-humidity environments or during winter months.

The Mayo Clinic recommends using a heated humidifier with heated tubing to maintain consistent moisture levels and prevent both dryness and condensation. Saline nasal sprays before bed can also help maintain mucosal hydration without medication side effects.

Sinusitis and Sinus Infection Risk

Sinus infection risk increases when CPAP equipment is not cleaned regularly. Bacteria and mold can colonize the humidifier chamber, tube, and mask cushion, and then get delivered directly into the nasal passages with each breath. The risk is higher with heated humidifiers because warm, moist environments promote microbial growth.

Sinusitis symptoms in CPAP users include facial pressure, green or yellow nasal discharge, and worsening nasal congestion. If these symptoms develop, patients should stop using the device until consulting a sleep doctor or respiratory therapist for equipment inspection and potential treatment with medication.

DID YOU KNOW: The humidifier chamber, tube, and mask cushion stay warm and damp, which is exactly what bacteria and mold like. Regular cleaning is one of the simplest ways to lower your risk of CPAP-related sinus problems.

Gurgling Noises and Excess Moisture

Gurgling noises from a CPAP machine usually indicate condensation buildup inside the tube, a phenomenon called rainout. Rainout happens when the temperature difference between the heated air leaving the humidifier and the cooler tubing causes water droplets to form inside the tube. These droplets then vibrate or splash as pressurized air passes through.

Heated tubing (sometimes called heated tubes or a climate line) solves this in most cases by maintaining the air temperature throughout the entire tube length. Adjusting the humidifier setting downward slightly can also help if heated tubing is not available on your CPAP model.

KEY TAKEAWAY: Most respiratory side effects from CPAP therapy stem from inadequate humidification or poor equipment hygiene, and both are fixable without changing your core treatment plan.

Beyond the airway, CPAP side effects frequently affect the skin and facial structure, which the next section addresses.

Skin, Mask Fit, and Facial Side Effects

Skin irritation, pressure sores, and mask discomfort are the second most common category of CPAP side effects. These problems almost always trace back to mask fit, mask style, or the materials used in the mask cushion.

Skin Irritation and Dermatitis

Contact dermatitis from CPAP masks presents as redness, itching, or a rash where the mask cushion contacts the face. Silicone allergies are uncommon but possible. More often, irritation results from excessive strap tension, a dirty mask, or moisture trapped between the skin and cushion.

Solutions include washing the mask cushion daily with mild soap, applying a thin layer of hydrocortisone cream to irritated areas (after consulting a physician), using hypoallergenic mask liners as a barrier between the skin and silicone, and ensuring the mask is not overtightened. A mask that requires excessive tension to seal properly is usually the wrong size or mask style for the user's face.

Pressure Sores and Skin Abrasions

Pressure sores develop when a CPAP mask applies constant force to the same area of skin night after night, most commonly on the nasal bridge. Skin abrasions can also form along the cheekbones or forehead with full-face CPAP masks. These injuries range from mild redness to open wounds that become infection risks.

Rotating between two mask styles, such as alternating between a nasal mask and a nasal pillow mask, distributes pressure across different contact points and allows healing. Nasal cushion designs and nasal pillows interface styles apply less pressure overall compared to a full mask.

Claustrophobia and Mask Discomfort

Claustrophobia is a psychological side effect that affects a meaningful subset of CPAP users. The sensation of having the face enclosed, combined with forced airflow, triggers anxiety that can prevent sleep initiation entirely.

The American Academy of Sleep Medicine recommends gradual desensitization: wearing the mask during the day while awake, then wearing it with the machine running while reading or watching television, before attempting full-night use. Nasal pillow masks minimize facial coverage and are typically the best-tolerated mask style for patients with claustrophobia. If desensitization fails, a sleep physician may recommend oral appliance therapy as an alternative treatment.

How to Check Whether Your Mask Fits Correctly

A properly fitted mask should seal without excessive strap tension, sit comfortably without shifting during sleep position changes, and not leave red marks that persist more than 30 minutes after removal.

Mask Fit Checklist

• Confirm the mask cushion size matches your facial measurements (most manufacturers offer small, medium, and large)
• Fit the mask while lying down, not while standing, because facial tissue shifts with gravity
• Adjust straps until the mask seals with gentle tension only
• Check for air leakage around the nose bridge, cheeks, and chin
• Test in your usual sleep position (side, back, or stomach) to verify the seal holds
• Inspect the mask cushion weekly for deterioration, flattening, or cracks
• Replace the mask cushion every 1 to 3 months depending on wear
• If you use a nasal mask and experience persistent mouth leak, try adding a chin strap or switching to a full-face CPAP mask

Take Dumbo Health's free quiz to see whether your current therapy approach is addressing the full biological impact of sleep apnea.

KEY TAKEAWAY: Mask fit problems account for the majority of skin-related CPAP side effects, and most can be resolved by choosing the right mask style, maintaining proper hygiene, and replacing worn cushions on schedule.

Some CPAP side effects affect the gastrointestinal system rather than the airway or skin, which is less intuitive and often overlooked.

Aerophagia, Bloating, and Gastrointestinal Side Effects

Aerophagia, the involuntary swallowing of air, is one of the most uncomfortable and least discussed CPAP machine side effects. It occurs when pressurized air enters the esophagus instead of or in addition to the airway, causing stomach bloating, gas, belching, and sometimes abdominal pain.

Why Aerophagia Happens

CPAP machines deliver air at a set pressure to keep the airway open. If the air pressure is higher than needed, excess air can be pushed past the upper esophageal sphincter and into the stomach. This is more common at higher pressure settings, during mouth breathing, and in patients who sleep on their back. Research published in the Journal of Clinical Sleep Medicine estimates aerophagia affects approximately 16 percent of patients on positive airway pressure therapy.

How to Reduce Air Swallowing

Reducing aerophagia usually involves lowering the air pressure if clinical efficacy allows. The titration of positive airway pressure should balance airway patency with patient comfort. Several approaches help:

If aerophagia persists despite these adjustments, sleep physicians may evaluate for complex sleep apnea or central sleep apnea, conditions where standard CPAP may not be the optimal PAP therapy. Adaptive servo-ventilation or Bi-level PAP (sometimes marketed as VPAP by some medical device companies) may be more appropriate in these cases.

DID YOU KNOW: Pressure relief features, available on many newer CPAP models, reduce exhalation pressure by 1 to 3 centimeters of water, which can significantly decrease aerophagia without compromising apnea event suppression.

KEY TAKEAWAY: Aerophagia is a real and underreported CPAP side effect that often resolves with pressure settings optimization, a BiPAP switch, or using pressure ramp and relief features.

The side effects discussed so far are largely mechanical, but CPAP therapy also carries broader health implications that connect directly to biological aging.

How Untreated CPAP Side Effects Accelerate Biological Aging

CPAP side effects matter beyond comfort because every night of suboptimal or abandoned therapy contributes to the same biological aging cascade that untreated obstructive sleep apnea drives. The connection between sleep apnea, inflammation, and accelerated aging is one of the most clinically significant findings in sleep medicine over the past decade.

The Biological Damage of Interrupted Therapy

Obstructive sleep apnea causes repeated oxygen desaturations throughout the night. Each apnea event drops blood oxygen levels, triggers a stress response, and fragments sleep architecture. Over months and years, this pattern elevates hs-CRP (a marker of systemic inflammation), raises blood pressure, worsens insulin resistance as reflected in HbA1c, and increases cardiovascular risk markers like ApoB.

When CPAP therapy is effective and consistently used, these markers improve. When therapy is abandoned due to side effects, they deteriorate. The National Institute on Aging notes that biological age can diverge meaningfully from chronological age, and chronic sleep disruption is one of the factors that drives this divergence.

Why Biomarker Tracking Matters for CPAP Users

Most CPAP users track their therapy through machine-generated reports: hours of use, mask leak data, apnea-hypopnea index (AHI), and oxygen desaturation index (ODI). These metrics tell you whether the machine is controlling apnea events. They do not tell you whether your body is actually recovering from the cumulative damage.

Dumbo Health's sleep longevity program addresses this gap directly. The Core membership tests 51 sleep-longevity biomarkers twice a year, including inflammation markers, metabolic panels, cardiovascular risk indicators, and hormonal health markers that are directly affected by sleep apnea. The proprietary SleepLongevityAge metric translates these results into a single biological age score, giving CPAP users an objective measure of whether their treatment is working at the cellular level, not just at the airway level.

At $0.99 a day for early members (billed annually at $365 a year), the Core plan is HSA and FSA eligible, requires no insurance, and includes physician support. Blood draws are available through the Quest Diagnostics network at more than 2,000 locations nationwide, with roughly 9 in 10 people living within 20 minutes of a testing location near you.

Real-World Scenarios

A 48-year-old man has been on CPAP for two years with an AHI below 5 and more than 6 hours of nightly use. His machine data looks excellent. But his hs-CRP remains elevated at 4.2 mg/L, his HbA1c has crept from 5.5 to 5.9, and his blood pressure is borderline high. His CPAP is treating his airway obstruction, but his biomarkers suggest the biological damage from years of untreated apnea before diagnosis has not fully reversed. A biomarker-driven program like Dumbo Health's sleep longevity offerings would flag these patterns and connect him with a physician to address the gaps.

A 55-year-old woman abandoned CPAP after six weeks due to persistent nasal congestion and claustrophobia. She assumes she will "deal with the snoring." She has not been told that her untreated moderate obstructive sleep apnea is associated with a higher risk of stroke. She has not had her cortisol, inflammatory markers, or metabolic panel checked since her original sleep apnea diagnosis. Without biomarker visibility, she has no way to gauge the biological cost of her decision.

A 38-year-old shift worker uses CPAP inconsistently due to sleep position issues and mask leak. His wearable (Oura ring) shows poor deep sleep and elevated resting heart rate. Integrating wearable data with blood biomarker testing through Dumbo Health's program would give his sleep physician a more complete picture than either data source alone.

KEY TAKEAWAY: CPAP machine data tells you whether the device is working mechanically, but biomarker testing tells you whether your body is actually recovering from the damage that sleep apnea caused.

Understanding the biological stakes makes it easier to commit to solving side effects rather than quitting therapy, which leads to the practical question of which CPAP device and settings minimize problems.

CPAP Device Types, Pressure Settings, and How They Affect Side Effects

The type of PAP machine you use and how it is configured directly determine which side effects you are most likely to experience. Not all CPAP devices work the same way, and the differences matter clinically.

Standard CPAP vs. Auto CPAP vs. BiPAP

Standard CPAP delivers a single fixed pressure throughout the night, determined during titration of positive airway pressure. It is the most commonly prescribed and most affordable positive airway pressure device.

Auto CPAP (automatic positive airway pressure) adjusts pressure dynamically, breath by breath, based on detected airway resistance. It delivers less pressure when the airway is stable and more when it detects obstruction. This variable approach often reduces aerophagia and mask leak because the average pressure throughout the night is lower than the fixed peak pressure of standard CPAP.

BiPAP (bilevel positive airway pressure) delivers two distinct pressures: a higher inhalation pressure (IPAP) and a lower exhalation pressure (EPAP). BiPAP is particularly useful for patients who struggle to exhale against fixed CPAP pressure, patients with central sleep apnea, or patients who need very high pressures to control obstructive sleep apnea. Some BiPAP devices, marketed as VPAP by certain medical device companies, include additional comfort features like pressure relief during exhalation.

Adaptive servo-ventilation is a specialized PAP device used for complex sleep apnea (also called treatment-emergent central sleep apnea), where standard CPAP triggers or worsens central apnea events. These devices continuously adjust both pressure and breathing rate support.

Comparing PAP Devices for Side Effect Profiles

The following comparison highlights the key differences relevant to side effect management:

Pressure Delivery

• Standard CPAP: Fixed single pressure all night
• Auto CPAP: Variable pressure that adjusts to detected airway resistance
• BiPAP: Two distinct pressures for inhalation and exhalation

Most Common Side Effects

• Standard CPAP: Aerophagia, mask leak at higher fixed pressures, difficulty exhaling
• Auto CPAP: Fewer aerophagia complaints, occasional discomfort from pressure fluctuations
• BiPAP: Lower exhalation-related discomfort, higher device cost, requires more complex titration

Best For

• Standard CPAP: Straightforward obstructive sleep apnea at moderate pressure levels
• Auto CPAP: Patients with positional or REM-related apnea who need variable pressure
• BiPAP: High-pressure requirements, central sleep apnea, complex sleep apnea, or patients who cannot tolerate fixed exhalation pressure

Typical Cost Range

• Standard CPAP: Lower upfront device cost
• Auto CPAP: Moderate cost, increasingly common as first-line therapy
• BiPAP: Higher cost, typically requires specific clinical justification

For patients whose side effects stem from pressure-related discomfort, switching from a standard CPAP to an auto CPAP or BiPAP often resolves the problem without abandoning positive airway pressure therapy entirely.

Pressure Settings Optimization

The pressure ramp feature starts therapy at a very low pressure (often 4 cm H2O) and gradually increases to the prescribed therapeutic level over 15 to 45 minutes. This gives patients time to fall asleep before full pressure kicks in, reducing mask discomfort and air swallowing.

Remote monitoring, available on newer CPAP machines with a data card or wireless connectivity, allows sleep physicians to review usage data, AHI, mask leak rates, and pressure effectiveness without requiring an in-person visit. This enables faster pressure settings adjustments and troubleshooting, which reduces the duration of side effects that might otherwise persist until the next scheduled appointment.

Pressure settings should only be adjusted by or in consultation with a sleep physician or respiratory therapist. Self-adjusting pressure can either fail to control apnea events (increasing health risk) or create new side effects like aerophagia.

KEY TAKEAWAY: The type of PAP machine and its pressure settings directly determine which side effects you experience, and a device switch or settings adjustment often resolves problems that seem intolerable on the current setup.

CPAP is not the only treatment for sleep apnea, and understanding the alternatives is essential for anyone whose side effects cannot be resolved.

Oral Appliances, Dental Devices, and Alternative Treatments

Oral appliance therapy is a clinically validated alternative to CPAP for patients with mild to moderate obstructive sleep apnea, and it is also used for patients who cannot tolerate CPAP machine side effects despite optimization attempts.

How Oral Appliances Work

An oral appliance is a custom-fitted dental device worn during sleep that advances the lower jaw forward, which opens the airway by moving the tongue base and soft palate away from the posterior pharyngeal wall. Oral appliances reduce apnea events and snoring without pressurized air, masks, tubing, or electricity.

The American Academy of Sleep Medicine recommends oral appliance therapy as a first-line treatment for mild to moderate obstructive sleep apnea and as an alternative for severe obstructive sleep apnea when CPAP is not tolerated. A dentist trained in dental sleep medicine custom-fits the device using dental casts or digital impressions and monitors for side effects over time.

Oral Appliance Side Effects and Dental Risks

Oral appliances have their own side effect profile. The most clinically significant concern is tooth movement over time. Prolonged use can shift the mandibular anterior teeth and maxillary anterior teeth, potentially causing malocclusion (a change in how the upper and lower teeth fit together when the mouth closes). Some patients require orthodontic treatment to correct bite changes after years of oral appliance use.

Other oral appliance side effects include temporomandibular joint discomfort, excessive salivation or dry mouth, and gum irritation. A biological dentist or dental sleep medicine specialist monitors these changes using periodic dental radiographs and clinical examination.

The DNA appliance is a specific type of oral appliance that aims to reposition the jaw and expand the upper airway structurally, addressing the root cause of sleep apnea in some patients rather than simply managing symptoms. This approach is less widely studied than standard mandibular advancement devices but is gaining attention in the dental sleep medicine community.

Comparing CPAP and Oral Appliance Therapy

How It Treats Apnea

• CPAP therapy: Pressurized air splints the airway open
• Oral appliance therapy: Physically repositions the jaw to open the airway

Effectiveness for Severe OSA

• CPAP therapy: Gold standard, most effective across all severity levels
• Oral appliance therapy: Less effective for severe obstructive sleep apnea, primarily recommended for mild to moderate

Common Side Effects

• CPAP therapy: Dry mouth, nasal congestion, mask discomfort, aerophagia, skin irritation
• Oral appliance therapy: Tooth movement, jaw discomfort, malocclusion, salivation changes

Portability

• CPAP therapy: Requires machine, tube, mask, power source, and potentially humidifier
• Oral appliance therapy: Small, portable, no power required

Monitoring Needed

• CPAP therapy: Machine data plus periodic physician review
• Oral appliance therapy: Regular dental follow-up, dental radiographs, and periodic sleep testing to verify effectiveness

Best For

• CPAP therapy: Moderate to severe obstructive sleep apnea, patients who adapt to mask therapy
• Oral appliance therapy: Mild to moderate obstructive sleep apnea, CPAP-intolerant patients, travelers

Regardless of whether a patient chooses CPAP therapy or oral appliance therapy, tracking the biological impact through biomarker testing provides data that neither treatment device generates on its own. Dumbo Health's biomarker testing panels include inflammation, metabolic, cardiovascular, and hormonal markers that reflect how effectively any sleep apnea treatment is protecting long-term health.

KEY TAKEAWAY: Oral appliances are a legitimate CPAP alternative for mild to moderate obstructive sleep apnea, but they carry their own side effects, including tooth movement and malocclusion, and require ongoing dental monitoring.

Knowing the treatment options is one thing; knowing how to get started with the right evaluation is another.

How to Get Started: From Diagnosis to Optimized Therapy

Getting the right diagnosis and treatment starts with a proper sleep apnea evaluation, followed by device selection, and ongoing monitoring that includes both machine data and biological health markers.

Step-by-Step: Getting Your Sleep Apnea Diagnosis and Treatment Right

1. Start with a quick screen. Take Dumbo Health's free quiz to see your sleep type and risk factors for obstructive sleep apnea.
2. Order an at-home sleep apnea test if indicated. Dumbo Health offers an FDA-cleared at-home sleep test for $149, all-inclusive, with physician diagnosis typically within 48 hours. The test is available in Florida, Texas, Virginia and Maryland.
3. Review your results with a board-certified sleep physician. Diagnosis is based on your apnea-hypopnea index (AHI) and oxygen desaturation index (ODI). An AHI of 5 to 14 indicates mild obstructive sleep apnea, 15 to 29 indicates moderate, and 30 or above indicates severe.
4. Select the appropriate treatment. Your sleep physician or sleep doctor will recommend CPAP therapy, BiPAP, oral appliance therapy, or another intervention based on severity, anatomy, and preference.
5. Optimize your device and settings. Work with your sleep physician or respiratory therapist to refine pressure settings, choose the right mask style (nasal pillow, nasal mask, hybrid mask, or full-face CPAP mask), and configure humidity and pressure ramp features.
6. Track your biological response with biomarker testing. Book your first blood draw at a Quest Diagnostics location near you through Dumbo Health's testing locations page. Results typically come back in about 7 days.
7. Review your SleepLongevityAge score and personalized fix plan with your physician. This score integrates your biomarker results with optional wearable data from Oura, Whoop, or Garmin to give you a single biological age number that tracks your progress over time.

After completing these steps, you have both a treatment plan for your airway and a biomarker baseline to measure whether that treatment is truly improving your long-term health.

KEY TAKEAWAY: The path from sleep apnea suspicion to optimized therapy requires proper diagnosis, device selection, settings refinement, and biological health tracking, not just plugging in a machine.

Not every CPAP user is a good candidate for every approach, and acknowledging limitations honestly is part of trustworthy care.

Limitations and Risks: When CPAP Therapy May Not Be the Right Fit

CPAP therapy is not universally tolerable, and some side effects cannot be fully resolved regardless of adjustments. Recognizing when CPAP is not working and exploring alternatives is a clinically responsible decision, not a failure.

Situations Where CPAP May Not Work Well

Severe claustrophobia that does not respond to desensitization. Some patients have anxiety responses to face-covering masks that are too intense to overcome through gradual exposure. For these patients, nasal pillow masks with minimal facial coverage or oral appliances may be better options, but some individuals remain intolerant of any device on the face during sleep.

Anatomical factors that cause persistent mask leak. Facial hair, unusual facial bone structure, or prior facial surgery can prevent any mask style from achieving a reliable seal. Chronic air leakage undermines therapy effectiveness and causes dry mouth, dry nose, and eye irritation that no amount of adjustment resolves.

Central sleep apnea or complex sleep apnea. Standard CPAP treats obstructive sleep apnea by splinting the airway open. In central sleep apnea, the brain intermittently fails to signal the respiratory muscles to breathe. CPAP does not address this mechanism. In some patients, starting CPAP actually triggers central apnea events, creating complex sleep apnea that requires adaptive servo-ventilation or Bi-level PAP with a backup breathing rate.

High-pressure requirements with intolerable aerophagia. Some patients need CPAP pressures above 15 cm H2O to control severe apnea events. At these pressures, aerophagia, mask leak, and difficulty exhaling become much harder to manage. BiPAP or auto CPAP may help, but some patients still cannot tolerate the therapy.

Recall concerns and equipment safety. Several CPAP manufacturers have issued recalls due to degraded sound abatement foam potentially releasing particles into the airflow. Patients should verify their CPAP model and serial number against current recall databases and consult their sleep physician if their device is affected. Continuing to use a recalled device introduces respiratory risks unrelated to standard side effects.

When to Consider Alternatives

If side effects persist after 3 months of systematic troubleshooting (including mask style changes, pressure adjustments, humidity optimization, and sleep position modification), a conversation with a sleep physician about alternatives is warranted. The American Academy of Sleep Medicine recognizes oral appliance therapy, positional therapy, surgical interventions, and weight management as legitimate components of a comprehensive sleep apnea treatment strategy.

Dumbo Health's Concierge membership at $300 a month for early members includes a dedicated sleep physician with 24/7 access and a personal sleep coach, which provides the clinical support needed to navigate complex decisions about switching therapies. The Concierge plan tests 103 biomarkers twice a year and includes all add-on specialty packs, covering hormonal, metabolic, cardiac, circadian, and advanced longevity markers. The longevity membership does not include CPAP equipment, a CPAP prescription, or resupply; those come with a separate Dumbo Health CPAP plan.

Stopping CPAP without implementing an alternative treatment leaves obstructive sleep apnea untreated, which the CDC associates with increased risk of heart disease, stroke, and type 2 diabetes. Always transition to an alternative rather than simply abandoning therapy.

KEY TAKEAWAY: CPAP therapy has genuine limitations for some patients, and recognizing when alternatives are needed is a sign of good clinical care, not treatment failure.

Managing side effects and tracking outcomes requires attention to daily habits, which the next section covers.

Sleep Habits, Sleep Position, and Lifestyle Factors That Affect CPAP Side Effects

Sleep habits and sleep position influence how severe CPAP side effects become. These factors are within your control and can meaningfully improve therapy tolerance.

Sleep Position and Mask Stability

Side sleeping is generally better for CPAP users than back sleeping. Back sleeping increases gravitational collapse of the airway and often requires higher pressure settings to maintain airway patency. Higher pressures increase aerophagia and mask leak risk.

Side sleeping also changes how the mask contacts the face. A nasal pillow or nasal pillows interface tends to maintain its seal better during side sleeping than a full mask, which can shift against the pillow surface. For dedicated side sleepers, choosing a mask specifically designed for lateral sleep (with flexible tubing attachments and low-profile frames) reduces middle-of-the-night disruptions.

Oral Health Routine and CPAP

Maintaining an oral health routine is often overlooked in CPAP side effect management but is directly relevant. Dry mouth from CPAP therapy increases oral bacterial growth, which raises the risk of cavities, gum disease, and bad breath. Brushing and flossing before bed, using an alcohol-free mouth rinse, and staying hydrated in the evening all help mitigate xerostomia-related dental risks.

Environmental Factors

Room humidity, temperature, and ambient noise affect CPAP comfort. A heated humidifier compensates for dry room air, but in very humid environments, reducing humidification prevents excessive condensation and rainout. Some patients find CPAP machine noise disruptive, particularly older CPAP models. Using a white noise machine can mask residual device sound, and newer CPAP machines from most major manufacturers operate below 30 decibels.

Maintaining a CPAP-Friendly Sleep Environment

Maintaining good sleep habits around CPAP use includes keeping a consistent bedtime, avoiding alcohol before sleep (alcohol relaxes the airway and increases apnea severity, potentially requiring higher CPAP pressures), and keeping the bedroom cool. Sleep quality improves when the body's circadian rhythm is consistent, which also benefits the biomarkers that Dumbo Health tracks through its longevity program.

TIP: Replace your CPAP mask cushion every 1 to 3 months and your full mask every 3 to 6 months. Worn materials lose elasticity, which increases leak, skin irritation, and pressure sore risk.

KEY TAKEAWAY: Sleep position, oral hygiene, environmental conditions, and equipment maintenance all affect how tolerable CPAP therapy is and should be treated as active parts of your treatment strategy.

Many misconceptions about CPAP therapy prevent patients from solving problems that are actually fixable.

Common Myths About CPAP Machine Side Effects Debunked

MYTH: CPAP side effects mean the therapy is not working for you.

FACT: Side effects and therapeutic effectiveness are separate issues. A CPAP machine can be fully controlling your apnea events (AHI below 5) while simultaneously causing nasal congestion or mask discomfort. Side effects indicate a fit, settings, or equipment issue, not a therapy failure. The American Academy of Sleep Medicine emphasizes that most CPAP side effects are modifiable with proper intervention.

MYTH: You should stop using CPAP if it causes dry mouth.

FACT: Dry mouth during CPAP therapy almost always results from mouth breathing with a nasal mask. Adding a chin strap, switching to a full-face CPAP mask, or increasing heated humidifier output resolves this side effect in the majority of patients. Stopping therapy exposes you to the cardiovascular and metabolic risks of untreated obstructive sleep apnea, which are far more serious than manageable dryness.

MYTH: All CPAP masks feel the same.

FACT: Mask styles vary significantly in contact area, weight, airflow delivery method, and comfort profile. A nasal pillow mask contacts only the nostrils, a nasal mask covers the nose, a full-face CPAP mask covers the mouth and nose, and a hybrid mask combines elements of different designs. The best mask for any individual depends on breathing pattern, facial anatomy, sleep position, and claustrophobia sensitivity.

MYTH: CPAP machines are all basically the same.

FACT: Standard CPAP, auto CPAP, BiPAP, and adaptive servo-ventilation devices differ fundamentally in how they deliver pressure. Standard CPAP delivers fixed pressure. Auto CPAP adjusts dynamically. BiPAP provides different pressures for inhalation and exhalation. Each type produces a different side effect profile. The right PAP machine for you depends on your specific diagnosis, pressure requirements, and tolerance.

MYTH: If CPAP has side effects, an oral appliance is always better.

FACT: Oral appliances eliminate CPAP-specific side effects like mask discomfort and aerophagia, but they introduce different risks including tooth movement, malocclusion, and jaw pain. Oral appliance therapy is also less effective than CPAP for severe obstructive sleep apnea. The best treatment is determined by severity, anatomy, and individual tolerance, not by which option sounds easier.

KEY TAKEAWAY: Most CPAP myths lead patients to abandon effective therapy over fixable side effects, so separating myth from fact is essential for long-term adherence and health.

Conclusion

CPAP machine side effects are common, but they are rarely a reason to stop therapy entirely. Most problems, from dry mouth and nasal congestion to aerophagia and skin irritation, resolve with proper mask fit, pressure settings adjustments, and humidifier use. When side effects persist despite optimization, alternatives like oral appliance therapy or different PAP devices offer legitimate pathways forward.

What matters most is not just whether your airway stays open at night, but whether your body is recovering from the cumulative damage that sleep apnea causes. Tracking biomarkers like inflammation, metabolic health, and cardiovascular risk gives you data that a CPAP data card cannot. Dumbo Health's sleep longevity membership starts at $0.99 a day, tests 51 biomarkers twice a year, is HSA and FSA eligible, and requires no insurance. Take the free quiz to see where you stand today.

Frequently Asked Questions About CPAP Machine Side Effects

What is a CPAP machine?

A CPAP machine, short for continuous positive airway pressure machine, is a medical device that delivers a steady stream of pressurized air through a mask to keep the upper airway open during sleep. It is the most widely prescribed treatment for obstructive sleep apnea, a condition where the airway repeatedly collapses during sleep, causing breathing interruptions. A standard CPAP machine includes a motor unit, a tube, a CPAP mask, and often a built-in or attachable heated humidifier. A healthcare professional or sleep physician prescribes and calibrates the device to suit the individual patient.

What is a CPAP machine used for?

CPAP machines are used primarily to treat obstructive sleep apnea, a sleep disorder where soft tissue in the throat relaxes and blocks the airway during sleep. According to the American Academy of Sleep Medicine, continuous positive airway pressure therapy is the first-line treatment for moderate to severe obstructive sleep apnea. CPAP therapy is also sometimes used for central sleep apnea and complex sleep apnea under physician supervision. The device prevents apnea events by maintaining continuous airflow pressure throughout the night, allowing the person to breathe without repeated interruptions.

How does a CPAP machine work?

A CPAP machine works by drawing in room air, filtering it, and delivering it at a prescribed air pressure level through a tube and CPAP mask to the user's nose, mouth, or both. This continuous stream of pressurized air acts as a pneumatic splint, preventing the airway from collapsing during sleep. The pressure setting is determined through a titration of positive airway pressure study or set automatically by an auto CPAP device. Some models include a pressure ramp feature that starts at a lower pressure and gradually increases to the prescribed level, making the therapy easier to tolerate at the start of each night.

What does a CPAP machine include?

A standard CPAP machine typically includes the main motor unit, a flexible tube, a CPAP mask, and a humidifier chamber. The mask comes in several styles, including full-face CPAP masks that cover both the nose and mouth, nasal masks that cover just the nose, and nasal pillow masks that sit at the nostrils. Many machines include a heated humidifier and heated tubing to add moisture to the airflow and reduce dryness. Some devices include a data card or remote monitoring capability so a sleep physician or respiratory therapist can review therapy data, including apnea events and mask leak rates.

What are the benefits of using a CPAP machine?

Consistent CPAP therapy can reduce or eliminate apnea events, improve sleep quality, and reduce daytime sleepiness. Research published in Chest suggests that effective CPAP adherence is associated with meaningful improvements in daytime function and cardiovascular risk markers. Clinical evidence also links CPAP therapy to reduced blood pressure in people with obstructive sleep apnea and hypertension, and to lower risk of stroke and heart disease in some patient populations. Additional reported benefits include reduced snoring, improved cognitive function, and better overall quality of life. A sleep physician can help determine whether CPAP is appropriate for your individual situation.

What are the most common side effects of using a CPAP machine?

The most common CPAP machine side effects include dry mouth, dry nose, nasal congestion, mask discomfort, skin irritation, and mask leaks. Some users experience aerophagia, which is air swallowing that causes bloating or gas. Claustrophobia triggered by wearing a CPAP mask is also frequently reported, particularly among new users. Less common side effects include pressure sores from a poorly fitting mask, sinusitis, and rainout, which is condensation that collects in the tube when the air cools before reaching the mask. Most side effects are manageable with adjustments to mask fit, mask style, humidification settings, or pressure settings reviewed by a clinician.

What are the long-term side effects of using a CPAP machine?

Long-term CPAP use is generally considered safe, but several effects have been reported over time. These include facial irritation and contact dermatitis from prolonged mask contact, chronic nasal congestion or sinusitis from continuous airflow pressure, and in some cases weakened throat muscles if airway muscles become reliant on external pressure support. Some research has raised questions about tooth movement or malocclusion associated with certain mask styles that press against the maxillary anterior teeth or mandibular anterior teeth over years of use. Air leakage and poor mask fit that persist long term can reduce therapy effectiveness. Regular follow-up with a sleep physician or respiratory therapist helps identify and address these issues early.

Can a CPAP machine cause nosebleeds?

Yes, CPAP therapy can sometimes cause nosebleeds, particularly in users who experience significant nasal dryness. Continuous airflow pressure without adequate humidification can dry out the nasal mucosa, making it more fragile and prone to bleeding. Using a heated humidifier and heated tubing can significantly reduce nasal dryness and the associated risk of nosebleeds. Adjusting the humidifier chamber settings and ensuring the CPAP mask fits correctly to minimise air leakage around the nose can also help. If nosebleeds are frequent, severe, or persistent, a healthcare professional should be consulted to rule out other causes.

Can a CPAP machine cause ear problems over time?

Some CPAP users report ear discomfort, a sensation of pressure in the ears, or eustachian tube dysfunction over time. Continuous positive airway pressure delivered through a nasal mask or nasal pillow interface can occasionally affect eustachian tube function because the middle ear connects to the nasal passage. This is more likely when pressure settings are set higher than needed or when there is significant mask leak that disrupts airflow dynamics. A sleep physician or respiratory therapist can review pressure settings and mask fit if ear discomfort develops. Persistent ear pain or changes in hearing should be evaluated by a healthcare professional promptly.

Can bacteria or mold grow inside a CPAP machine?

Yes, bacteria, mold, and other pathogens can grow inside CPAP equipment if it is not cleaned regularly and correctly. The humidifier chamber, tube, and mask cushion create a warm, moist environment that supports microbial growth. Regular cleaning of the humidifier chamber, tube, mask, and nasal pillow or nasal cushion with mild soap and warm water is essential. Failure to maintain equipment hygiene can increase the risk of respiratory infections and sinusitis. The American Academy of Sleep Medicine and most device manufacturers recommend cleaning the mask and humidifier chamber at least weekly, with daily rinsing of the water chamber.

How often should I clean my CPAP equipment?

CPAP equipment should be cleaned regularly to prevent bacteria, mold, and mineral buildup. The mask cushion, nasal pillow, and water chamber should be rinsed daily and washed with mild soap and warm water at least once a week. The tube should be cleaned weekly and replaced every one to three months. The full-face or nasal mask frame should be wiped down daily and washed weekly. The humidifier chamber should be emptied, rinsed, and air-dried daily. Filters should be checked monthly and replaced according to the manufacturer's guidance. A respiratory therapist or sleep physician can advise on a cleaning schedule that suits your specific CPAP device model.

Why does long-term CPAP use sometimes lead to people quitting therapy?

Long-term CPAP discontinuation is common and often results from accumulated discomfort, mask fit problems, pressure intolerance, or a lack of ongoing clinical support. Research published in Chest highlights that CPAP adherence is one of the most significant challenges in sleep medicine, with many patients stopping therapy within the first year. Common reasons include persistent mask discomfort, aerophagia, claustrophobia, dry mouth or nasal congestion, and a failure to notice sufficient symptom improvement. Regular follow-up with a sleep physician, adjustments to mask style, humidification, or pressure settings, and access to adherence support can all help reduce the likelihood of stopping therapy.

How can I reduce the risks of long-term CPAP use without stopping therapy?

Several practical steps can help reduce CPAP side effects and risks while maintaining effective therapy. Ensuring the CPAP mask fits correctly minimises mask leak, pressure sores, skin irritation, and contact dermatitis. Using a heated humidifier and heated tubing reduces dry mouth, dry nose, and nasal congestion. A pressure ramp setting or auto CPAP can make therapy more comfortable by adjusting airflow pressure gradually or dynamically. Mask liners can reduce skin abrasions and dermatitis. Cleaning equipment regularly prevents respiratory infections. A chin strap can reduce mouth breathing and xerostomia when using a nasal mask. Working with a sleep physician or respiratory therapist who can review remote monitoring data ensures that pressure settings remain appropriate over time.

Should I change my CPAP pressure settings on my own?

No. CPAP pressure settings should not be changed without clinician guidance. Incorrect pressure settings can reduce the effectiveness of therapy, fail to prevent apnea events, or in some cases contribute to complex sleep apnea or central sleep apnea events. A sleep physician uses data from the device, including apnea events, mask leak, and airflow pressure records, to determine whether settings need adjustment. If you are experiencing discomfort, pressure-related symptoms, or believe your therapy is no longer effective, speak with a healthcare professional or sleep physician before making any changes to your prescribed settings.

Is CPAP safe if I have COPD, diabetes, or high blood pressure?

CPAP therapy is generally considered safe for people with COPD, diabetes, or high blood pressure, and may offer additional benefits in some of these conditions. The NHS notes that treating obstructive sleep apnea with CPAP can contribute to improvements in blood pressure control in some patients. For people with COPD or other respiratory conditions, however, standard CPAP may not be appropriate, and a sleep physician may consider bilevel positive airway pressure, also called BiPAP or VPAP, or adaptive servo-ventilation as alternative PAP therapy options. People with these conditions should discuss CPAP therapy with both their sleep physician and their primary care provider or specialist before starting treatment.

What are the downsides of using a CPAP machine?

The main downsides of CPAP therapy include the need to wear a mask every night, the ongoing cleaning and maintenance of equipment, the cost of supplies and equipment resupply, and the range of potential side effects including dry mouth, mask discomfort, skin irritation, nasal congestion, and aerophagia. Some users find the gurgling noises from condensation in the tube or the sound of the machine disruptive. Travelling with CPAP equipment requires planning. Adherence can be difficult to maintain over the long term without clinical support. These downsides are manageable for most people, but a sleep physician can help identify whether adjustments to therapy, mask style, or equipment are needed.

Are there alternatives to CPAP therapy for obstructive sleep apnea?

Yes, several alternatives to CPAP therapy exist, though their suitability depends on the type and severity of sleep apnea and individual health factors. Oral appliance therapy uses a custom-fitted dental device to reposition the jaw and keep the airway open during sleep. Mandibular advancement devices are the most common type of oral appliance and are typically recommended for mild to moderate obstructive sleep apnea. Positional therapy, weight management, and upper airway surgery are other options that a sleep physician may consider. The American Academy of Sleep Medicine recommends that oral appliance therapy be fitted by a qualified dentist with training in dental sleep medicine. A healthcare professional can help determine which alternative is appropriate for your individual case.

Do CPAP machines really work?

Yes, CPAP therapy is strongly supported by clinical evidence as the most effective treatment for moderate to severe obstructive sleep apnea. When used consistently, CPAP reduces apnea events, improves oxygen saturation during sleep, reduces daytime sleepiness, and in many cases lowers blood pressure. The Sleep Foundation explains that CPAP is considered the gold standard treatment for obstructive sleep apnea. However, effectiveness depends heavily on adherence. Patients who use CPAP for fewer hours per night or who stop therapy early are less likely to experience the full range of benefits. Working with a sleep physician and a respiratory therapist on an ongoing basis supports better long-term outcomes.

How long do I need to use a CPAP machine?

For most people with obstructive sleep apnea, CPAP therapy is a long-term treatment rather than a short-term fix. The underlying causes of airway collapse during sleep typically persist unless addressed through weight loss, positional changes, surgery, or oral appliance therapy in suitable candidates. Stopping CPAP without addressing the root cause of sleep apnea generally causes apnea events to return. A sleep physician can review whether any changes in weight, health status, or sleep habits warrant a reassessment of therapy type or pressure settings. Some people may transition to other treatment options over time, but this should always be guided by a clinician rather than decided independently.

Is CPAP covered by insurance?

CPAP therapy is covered by many health insurance plans in the United States, including Medicare, when a qualifying diagnosis of obstructive sleep apnea has been documented through a sleep study and the patient meets adherence requirements. Coverage rules, prior authorization requirements, and equipment resupply limits vary by insurer and plan. For patients who prefer to avoid insurance complexity, Dumbo Health offers cash-pay sleep apnea testing and CPAP care in Florida, Texas, Virginia and Maryland, with transparent pricing, no prior authorizations, and no surprise bills. Dumbo Health does not bill insurance. The at-home sleep apnea test is available for $149 as a one-time purchase, Dumbo Health CPAP plans start at $59 a month and include the machine, a mask fitted to your face, resupply and a care team, and all membership plans are HSA and FSA eligible. Explore sleep apnea care to see what is included.

How does an at-home sleep apnea test work before CPAP therapy begins?

An at-home sleep apnea test, also called a home sleep apnea test or HSAT, is an FDA-cleared diagnostic tool that measures breathing patterns, oxygen saturation, airflow, and respiratory effort during sleep in the patient's own home. The results are reviewed by a sleep physician, who uses the data to determine whether obstructive sleep apnea is present and at what severity. A diagnosis typically enables a CPAP prescription. According to the American Academy of Sleep Medicine, home sleep apnea testing is appropriate for adults with a high likelihood of moderate to severe obstructive sleep apnea without significant comorbidities. An in-lab polysomnography study may be recommended in more complex clinical situations.

What is the difference between CPAP, BiPAP, and adaptive servo-ventilation?

CPAP delivers a single, continuous level of air pressure throughout both inhalation and exhalation. BiPAP, or bilevel positive airway pressure, delivers a higher pressure during inhalation and a lower pressure during exhalation, which some patients find more comfortable, and which is often used for people with COPD, high-pressure requirements, or complex sleep apnea. Adaptive servo-ventilation, sometimes abbreviated ASV, continuously adjusts the pressure delivered to match the patient's breathing pattern in real time, and is used primarily for complex sleep apnea or central sleep apnea under close physician supervision. The appropriate PAP therapy device is determined by a sleep physician based on diagnostic results, comorbidities, and treatment response.

When should I contact a healthcare provider about my CPAP therapy?

Contact a healthcare provider if you experience persistent side effects that are not improving, including severe nasal congestion, frequent nosebleeds, significant skin irritation, sinus infections, or ear pain. You should also speak with a clinician if you continue to feel excessively sleepy during the day despite using CPAP regularly, if your sleep partner still notices frequent pauses in your breathing, or if your CPAP data shows ongoing high levels of apnea events or mask leak. If you experience chest pain, severe shortness of breath, or other urgent symptoms, seek medical care promptly. Regular follow-up appointments with a sleep physician or respiratory therapist support safer and more effective long-term CPAP therapy.

Can CPAP therapy affect sleep apnea in commercial drivers or CDL holders?

Yes. Commercial drivers who are diagnosed with obstructive sleep apnea are typically required to demonstrate CPAP adherence before a certified medical examiner will issue a DOT medical certificate. The FMCSA does not have a single federal mandate requiring CPAP therapy for all drivers with sleep apnea, but certified medical examiners may require documentation of diagnosis, treatment, and adherence as a condition of certification. Adherence is typically defined as using CPAP for a minimum number of hours per night over a defined period. A certified medical examiner makes all DOT certification decisions independently. Dumbo Health can support sleep apnea testing and care documentation for commercial drivers, but cannot guarantee DOT certification or medical clearance. See at-home sleep testing for truck drivers for more detail on how testing works for CDL holders.

How does sleep apnea and CPAP use connect to long-term biological aging?

Untreated obstructive sleep apnea is associated with chronic inflammation, elevated stress hormones such as cortisol, metabolic disruption, and cardiovascular strain, all of which are linked to accelerated biological aging in research literature. The National Institute on Aging explains that biological age reflects how the body is functioning at a cellular and molecular level, which can differ significantly from chronological age. Biomarkers such as hs-CRP, HbA1c, ApoB, DHEA-S, and testosterone can reflect some of these downstream effects of poor sleep quality. Effective CPAP therapy may help stabilise some of these markers over time, though outcomes vary by individual and should be interpreted by a healthcare professional. Dumbo Health's sleep longevity program tracks these biomarkers twice a year so members can see how their sleep health may be affecting biological aging over time.

What is SleepLongevityAge and how does it relate to CPAP therapy?

SleepLongevityAge is a proprietary metric developed by Dumbo Health that estimates how sleep may be accelerating or slowing a person's biological aging, based on blood biomarker results and optional wearable data from devices such as Oura, Whoop, or Garmin, reviewed by board-certified physicians. It is a wellness and screening tool, not a clinical diagnosis. For people using CPAP therapy for obstructive sleep apnea, tracking biomarkers over time through a program like Dumbo Health's Core or Concierge membership can provide context about whether key markers associated with sleep quality, inflammation, and metabolic health are trending in a positive direction. A physician can help interpret what any individual biomarker result or SleepLongevityAge score means for your personal health situation. Take the free quiz to see whether biomarker tracking may be a useful next step.

How much does CPAP-related care cost at Dumbo Health?

Dumbo Health offers an at-home sleep apnea test for $149 as a one-time, cash-pay purchase. This is separate from the longevity membership. The test includes the device and one night of testing, with physician diagnosis typically available within 48 hours. CPAP care is a separate cash-pay CPAP plan, available in Florida, Texas, Virginia and Maryland, starting at $59 a month with the machine, a mask fitted to your face, resupply and a care team. For people who also want biomarker tracking, which does not include CPAP equipment or resupply, the Core membership is available to early members for $0.99 a day, billed annually at $365 a year, and includes 51 sleep-longevity biomarkers tested twice a year. The Concierge membership is $300 a month for early members and includes 103 biomarkers, a dedicated sleep physician, and a personal sleep coach. All plans are HSA and FSA eligible, with no insurance required and no surprise bills. Compare the Core and Concierge plans to see which option fits your needs.

Where can I find CPAP-related testing or blood draws near me?

Dumbo Health uses a broad lab network so members can access blood draws for their biomarker panels at convenient locations. You can find a testing location near you using the Dumbo Health testing locations page, which covers the lab network used for the sleep longevity biomarker panels. For at-home sleep apnea testing, the HSAT device is sent directly to your home, so no clinic visit is needed for the overnight test itself. Sleep apnea testing and CPAP care from Dumbo Health are available in Florida, Texas, Virginia and Maryland.