A CPAP machine typically lasts about 5 years with nightly use. That’s the replacement timeline recommended by most manufacturers and insurance providers. Some well-maintained machines keep working for a decade or longer, but after five years of continuous use, internal components start to wear down, and performance can quietly decline.
What Wears Out First
The motor is the heart of a CPAP machine, and it runs every night for hours. Over time, bearings loosen, seals degrade, and the motor has to work harder to maintain the same air pressure. You may not notice the gradual decline in performance, but your therapy quality can suffer before anything obviously breaks. Machines that deliver higher pressures tend to wear out faster because the motor is under more strain each night.
The accessories around the machine wear out much faster than the machine itself. Disposable paper filters need replacing every month. Reusable foam filters should be cleaned weekly and swapped out every 3 to 6 months. These components are cheap but easy to neglect, and a clogged filter forces the motor to pull air harder, which shortens its life.
Signs Your Machine Is Failing
A healthy CPAP machine hums at about 25 to 30 decibels, roughly the volume of a whisper or a quiet computer fan. The sound should be steady and rhythmic. If you start hearing clunking, grinding, or whining, that points to a mechanical problem inside the motor. Hissing, whooshing, or whistling usually means an air leak, either from a worn mask cushion or a connection that’s come loose.
Gurgling or popping sounds typically come from water pooling in the tubing, which is a maintenance issue rather than a sign of failure. But a motor that’s gradually getting louder over several months is a different story. That’s the sound of a machine aging out, especially if it’s past the five-year mark. Other red flags include waking up feeling less rested than usual, noticing your mask seal breaking more often (which can signal inconsistent pressure delivery), or seeing error codes on the display.
Maintenance That Extends Machine Life
Daily cleaning of your mask cushion is the single most impactful habit. Skin oils break down the silicone over time, degrading the seal. Washing the cushion in warm water with a mild dish soap each morning, soon after you wake up, limits how long those oils sit on the material. This keeps the seal intact longer and prevents the machine from compensating for leaks.
The humidifier chamber needs fresh distilled water every day. Letting water sit creates a warm, moist environment where bacteria thrive. Beyond the hygiene issue, mineral deposits from tap water can build up in the chamber and eventually affect the heating element. The full mask, headgear, and tubing should get a thorough weekly cleaning.
Filters are the overlooked maintenance item. A discolored or visibly dirty disposable filter should be replaced immediately, not at the end of the month. Reusable foam filters that can’t be fully cleaned or show signs of wear need replacing ahead of the usual 3 to 6 month schedule. Keeping the air pathway clean reduces strain on the motor and helps maintain consistent pressure delivery.
Insurance and Replacement Coverage
Medicare covers CPAP machines through a 13-month rental arrangement. During that period, you rent the machine, and after 13 continuous months of documented use, you own it. Medicare guidelines allow users to get a new machine every 5 years, which aligns with the standard manufacturer replacement timeline. Private insurers generally follow a similar schedule, though specific policies vary.
If your machine fails before the five-year mark and is still under warranty, the manufacturer may repair or replace it at no cost. Most major brands offer a 2-year warranty on the machine itself, though accessory warranties are shorter. Keep your purchase receipt and warranty documentation, because you’ll need them if the motor fails early.
The Cost of Replacing vs. Repairing
A standard CPAP machine costs between $500 and $1,000 out of pocket. Auto-adjusting models (APAP) run $600 to $1,600, and bilevel machines (BiPAP) range from $1,700 to $3,000. Repair costs for CPAP machines are rarely published by manufacturers, and most don’t offer consumer-facing repair services. In practice, if a motor fails outside of warranty, replacing the machine is usually the more practical option, especially since a new unit comes with updated features and a fresh warranty.
Technology Can Outpace the Hardware
Even a mechanically sound CPAP machine can become functionally outdated before it physically dies. Many machines from the mid-2010s used 3G cellular modems to wirelessly upload sleep data to apps and provider portals. As carriers shut down their 3G networks, those machines lost the ability to sync data automatically. The therapy itself still works fine, since pressure delivery doesn’t depend on a cell signal. But if your doctor relies on wireless data uploads to monitor your treatment, you’ll need to transfer data manually using the machine’s SD card or upgrade to a newer model with current connectivity.
Software updates, improved pressure algorithms, and quieter motors also mean that a machine purchased today will generally deliver better therapy than one from five or seven years ago. If your current machine still works but feels dated, the five-year insurance replacement window is a natural time to upgrade without paying entirely out of pocket.
A Practical Replacement Timeline
The machine itself should last at least 5 years. Budget for replacing filters monthly (disposable) and every few months (reusable foam). Mask cushions and tubing degrade faster than the machine and typically need replacement every few months depending on use, though exact schedules vary by product. If you clean daily and replace filters on schedule, you’re doing the most important things to keep the motor healthy and your therapy effective for the full life of the machine.