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How Does a CPAP Machine Work?

Like most CPAP devices, Philips CPAP machines work by delivering pressurized air through a tube to a mask that covers the nose and mouth or just the nose. People with sleep apnea or other breathing problems use CPAP machines when they sleep to decrease episodes of apnea.

Graphic describing how a CPAP machine works to treat sleep apnea
CPAP machines work by pushing pressurized air into the airway through a mask that covers the nose and mouth or just the nose.

People with obstructive sleep apnea have difficulty getting quality sleep because the tongue, uvula or soft palate shift and block airways, causing repeated pauses in breathing. CPAP helps prevent the collapse of the upper airway and reduces obstruction.

Sleep apnea can result in a lack of oxygen that can increase the risk of high blood pressure, daytime fatigue, brain fog, liver problems, heart problems and Type 2 diabetes. CPAP can decrease episodes of apnea, helping to prevent drops in oxygen levels. It may also improve overall sleep quality.

Machine, Equipment and Maintenance Expenses

A basic CPAP system consists of the CPAP machine, tubing and a facemask. Depending on the model, the design and features, the equipment may vary, as do machine and maintenance costs.

Fortunately, most insurance companies cover at least some of the cost.

How Much Does a Philips CPAP Machine Cost?

The average price of a basic Philips CPAP DreamStation machine is about $650. This doesn’t include the mask, tubing and other accessories. Depending on the features of the machine, the price can go up.

Average Cost of Philips CPAP Machine and Accessories
Machine$650 to $1,200
Hoses and tubing$10 to $50 (replace every three months)
Humidifier$150 to $200 (if not built into a machine)
Masks$120 to $250 (replace every three months)
Filters$5 to $20 (disposable or reusable)
Cleaning Supplies (disinfectants, mask wipes, tube brushes, etc.)$6 to $15

For example, auto CPAP models that automatically increase or decrease air pressure based on airway resistance cost more. Some CPAPs come with built in humidifiers, while other humidifiers are sold separately.

The exact price depends on the retailer. Some accessories, such as masks and tubing, need to be replaced every few months. Make sure you check with your health care provider.

Do Medicare and Insurance Cover CPAP Machines?

Medicare and most insurance companies will cover part of the cost of CPAP machines. In order to qualify for coverage, your medical provider must diagnose you with sleep apnea and give you a prescription for a CPAP machine. You many also need to provide the results of a sleep study.

With Medicare, people will pay 20% of the Medicare-approved amount and the cost of supplies. The Medicare Part B deductible applies. Medicare will pay for you to rent the machine from a retailer for 13 months if you use the machine continuously. After 13 months of rental, you own the machine.

Many private insurance companies, such as UnitedHealthcare, will pay for CPAP machines and supplies only after your deductible has been met. This means if you have a $2,000 deductible that has not been met for the year and your machine and supplies cost $1,500, you will pay for this out of pocket. Make sure you contact your insurance provider to determine your actual out-of-pocket cost.

CPAP Machine Side Effects

Most CPAP side effects are minor and go away after you get used to the machine. Some of these come from a poorly fitted mask, such as air leaks or face rashes. Poorly fitted chin straps may cause damage to teeth.

Getting used to breathing pressurized air and wearing a mask may be difficult at first. New users may experience claustrophobia, insomnia, respiratory infections and mild ear pain.

Other side effects include dry eyes, respiratory infections, nose irritation, difficulty sleeping and abdominal discomfort. In some cases, changing to a different type of mask, using a nasal pad, or adding a humidifier can reduce side effects. Some patients can’t tolerate CPAP therapy because of side effects and may ask their doctor to recommend CPAP alternatives.

Philips Recalls CPAP Machines Over Possible Dangers

In June 2021, Philips issued a voluntary recall for millions of its CPAP, BiPAP (Bi-Level Positive Airway Pressure) and mechanical ventilator devices because degraded polyester-based polyurethane (PE-PUR) sound abatement. Philips warned ingesting or inhaling particles or gasses from broken-down foam could cause toxic, respiratory and carcinogenic effects.

As of December 31, 2022, the FDA received more than 98,000 medical device reports of side effects linked to PE-PUR foam. Reported side effects include cough, dizziness and headache, as well as serious adverse effects such as asthma, breathing problems, cancer, chest pain, infection, nodules, pneumonia and respiratory problems. There have also been reports of 346 related deaths.

Philips lab testing revealed the foam could expose people to toxic chemicals, including Toluene diamine, toluene diisocyanate, diethylene glycol, dimethyl diazene and phenol, 2,6-bis (1,1-dimethylethyl)-4-(1-methylpropyl)-.

People who used Philips’ recalled CPAP machines have filed Philips CPAP lawsuits after suffering injuries. These lawsuits claim the Philips CPAP devices are defective and the company did not adequately warn about the risk of serious injury.

In a June 28, 2022 foam testing update, Philips claimed the chemicals emissions from degraded foam were not likely to cause health issues in CPAP users. Testing also found machines that were cleaned with ozone cleaners were 14 times more likely to have foam degradation.

In September 2022, Philips warned CPA and BiPAP users that millions of magnetic masks could affect metallic implants in patients’ or caregivers’ bodies and cause serious injuries. The company did not issue a recall but told users to stop using these masks if they have metallic implants.

Please seek the advice of a qualified professional before making decisions about your health or finances.
Last Modified: April 16, 2024

9 Cited Research Articles

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  1. Philips. (2022, September 9). Philips Respironics alerts customers worldwide of updated instructions and labeling of specific sleep therapy masks that contain magnetic headgear clips due to potential risk of serious injury. Retrieved from https://www.usa.philips.com/c-dam/corporate/newscenter/global/standard/resources/healthcare/2022/masks-with-magnets/philips-respironics-faq-notification-masks-with-magnets-09092022.pdf
  2. U.S. Food and Drug Administration. (2022, August 16). Update: Certain Philips Respironics Ventilators, BiPAP Machines, and CPAP Machines Recalled Due to Potential Health Risks: FDA Safety Communication. Retrieved from https://www.fda.gov/medical-devices/safety-communications/update-certain-philips-respironics-ventilators-bipap-machines-and-cpap-machines-recalled-due
  3. Park, A. (2022, June 29). Philips attributes foam breakdowns in recalled CPAP ventilators to ozone-based cleaners. Retrieved from https://www.fiercebiotech.com/medtech/philips-reports-foam-breakdown-only-4-recalled-ventilators-linked-formal-complaints
  4. Philips. (2022, June 28). Philips provides update on Philips Respironics’ PE-PUR sound abatement foam test and research program. Retrieved from https://www.philips.com/a-w/about/news/archive/standard/news/press/2022/20220628-philips-provides-update-on-philips-respironics-pe-pur-sound-abatement-foam-test-and-research-program.html
  5. Whitten, T. (2021, June 16). Does Insurance Cover CPAP Therapy: What You Need to Know. Retrieved from https://www.cpap.com/blog/does-insurance-cover-cpap/
  6. Philips. (2021, June 14). Philips issues recall notification* to mitigate potential health risks related to the sound abatement foam component in certain sleep and respiratory care devices. Retrieved from https://www.usa.philips.com/a-w/about/news/archive/standard/news/press/2021/20210614-philips-issues-recall-notification-to-mitigate-potential-health-risks-related-to-the-sound-abatement-foam-component-in-certain-sleep-and-respiratory-care-devices.html
  7. American Sleep Association. (n.d.). CPAP Side Effects. Retrieved from https://www.sleepassociation.org/sleep-apnea/cpap-treatment/cpap-side-effects/
  8. Healthsqyre. (n.d.). United Healthcare CPAP Coverage. Retrieved from https://www.healthsqyre.com/education/united-healthcare-cpap-coverage/
  9. Medicare.gov. (n.d.). Continuous Positive Airway Pressure devices, accessories, & therapy. Retrieved from https://www.medicare.gov/coverage/continuous-positive-airway-pressure-devices