CPAP Supply Replacement Schedule (2026 Guide)

CPAP supplies wear out on a predictable schedule. Mask cushions usually need replacement every 2 to 4 weeks, tubing every 3 months, and disposable filters monthly. This guide breaks down the manufacturer-recommended timelines for every component, the real-world signs that something needs replacing earlier than expected, and how your own therapy data can warn you before comfort drops.

Why Replacement Timelines Matter

CPAP equipment is high-touch, high-humidity gear that runs for six to eight hours every single night. Silicone cushions lose their seal as skin oils break down the polymer surface. Tubing develops micro-tears at the cuff connections. Disposable filters clog as they trap dust, dander, and pollen from your bedroom air. When components degrade, your therapy suffers in measurable ways: leak rates climb, pressure delivery becomes inconsistent, and comfort drops to the point that you might find yourself ripping the mask off at 3 a.m.

The Medicare local coverage determination LCD L33718 lays out the federal baseline for what insurance plans will cover and when for CPAP devices and accessories under obstructive sleep apnea. Most private plans follow the same cadence. The catch is that the covered schedule is a maximum, not a personalized prescription. Many CPAP users either over-replace (wasting money) or under-replace (compromising therapy quality without realizing it). This guide gives you both reference points so you can decide what makes sense for your equipment, your skin chemistry, and your sleep environment.

The Standard Replacement Schedule

The following timelines align with ResMed and Philips Respironics manufacturer user guides and match what most insurance plans (including Medicare Part B) cover. Your specific plan may vary, so confirm with your DME (durable medical equipment) supplier or insurance carrier.

Component	Replace Every	Insurance Typically Covers
Mask cushion (full face)	1 month	Monthly
Mask cushion (nasal/pillow)	2 weeks to 1 month	Monthly
Mask frame	3 months	Every 3 months
Headgear/straps	6 months	Every 6 months
Tubing (standard)	3 months	Every 3 months
Heated tubing (ClimateLine)	6 months	Every 6 months
Disposable filters	1 month	2 per month
Reusable filters	6 months	Every 6 months
Humidifier water chamber	6 months	Every 6 months
Chinstrap (if used)	6 months	Every 6 months

These are ceiling intervals, not targets. If a component shows signs of wear before the listed interval, replace it sooner. Conversely, if your mask cushion still seals well at six weeks, there is no reason to swap it out at exactly four weeks just because the calendar said so.

Component-by-Component Guide

Mask Cushion

The cushion is the most frequently replaced component because it is the part of your mask that actually touches your face. Six to eight hours of nightly contact with skin oils, perspiration, and the moisture from a humidified airway gradually breaks down the silicone or memory foam surface. The polymer slowly loses its memory and stops returning to its original shape. Once that happens, the cushion can no longer form a clean seal against your face under positive pressure.

Cushion lifespan depends heavily on type. Soft nasal pillows (which contact a small area) wear out faster than full face cushions (which spread contact across a larger surface). Memory foam cushions, like the AirTouch F20, sacrifice longevity for the quietest, most comfortable seal on the market; expect to replace them every two to three weeks.

Signs it needs replacing:

• Visible discoloration, yellowing, or stiffness
• Permanent impressions or flat spots that do not spring back
• Increasing leak rates despite proper fitting and headgear adjustment
• Skin irritation or red marks that were not present when the cushion was new
• Audible air noise around the cushion seal that was not there last week

Data signal: Use CPAP Clarity to track your nightly leak trends. A gradual upward drift in median leak rate over two to four weeks, with no change in sleeping position or headgear tension, is a textbook cushion-wear signature. The leak chart on your dashboard tells you when to swap before your sleep quality drops.

Common ResMed mask cushion replacements

Best for Nasal Pillow Users

ResMed AirFit P10 Nasal Pillow Cushion

Featherweight nasal pillow cushion. The most popular replacement on the site; lasts 2 to 4 weeks.

Compare on Amazon→

Best for Full Face Users

ResMed AirFit F20 Full Face Cushion

InfinitySeal silicone full face cushion. Typical lifespan 3 to 4 weeks under normal use.

Compare on Amazon→

Best Comfort

ResMed AirTouch F20 Memory Foam Cushion

Memory foam cushion for the F20 frame. Quietest seal available; replace every 2 to 3 weeks.

Compare on Amazon→

Mask Frame

The rigid plastic frame that holds the cushion and connects to the tubing wears more slowly than the cushion itself. But swivel joints, clip mechanisms, and magnetic connectors can loosen over months of nightly use, and stress cracks can develop around the forehead support or the cushion clip on full face frames.

Signs it needs replacing:

• Swivel elbow does not rotate freely or leaks at the joint
• Clips that connect to headgear have lost their grip
• Cracks or stress marks in the plastic, especially around the forehead support
• Magnetic clips (on newer AirFit models) that no longer hold position firmly

A worn frame is also worth catching because a slightly cracked plenum can leak even with a brand-new cushion installed, which makes it easy to misdiagnose the problem as a cushion issue and waste a replacement.

Headgear and Straps

Headgear stretches over time as the elastic fibers break down from nightly tension and washing. Most users compensate by tightening the straps notch by notch, which is exactly the wrong response: tighter headgear distorts the cushion seal, increases facial pressure marks, and can actually worsen leaks by pushing the cushion off-center.

Signs it needs replacing:

• Straps no longer hold the mask in place at their previous adjustment
• Velcro tabs have lost their grip and the strap slides under tension
• Fabric is fraying or pilling along the contact edges
• You have tightened the headgear more than twice beyond your original setting

Washing headgear weekly with mild soap extends its useful life noticeably. Avoid fabric softener; it coats the elastic fibers with surfactant residue that accelerates the loss of stretch.

Tubing

Standard six-foot tubing should be replaced every three months. Heated tubing (like ResMed's ClimateLine Air) lasts longer at six months, but it is also more expensive to replace. Tubing wear is mostly about two things: micro-tears at the cuff connections (where the tube clips onto the machine and the mask), and biological residue inside the tube that washing cannot fully remove.

Signs it needs replacing:

• Visible discoloration inside the tubing (usually a gray or brown tint when held up to a light)
• Persistent odor after washing
• Small holes, tears, or cracks, often at the cuff connections where the tube flexes most
• Stiffness or loss of flexibility
• Rainout that persists despite correct humidity settings (micro-tears can let cool room air in)

To inspect your tubing, hold it up to a bright light and look through it lengthwise. Discoloration you cannot wash out means biological material has penetrated the tubing wall, and at that point no amount of cleaning will fully remove it. Time for a new tube.

Standard Tubing Replacement

Universal 6 ft CPAP Hose (22mm)

Standard non-heated CPAP tubing in the most common 22mm / 6 ft size. Compatible with ResMed AirSense, AirCurve, and most Philips machines.

Compare on Amazon→

Filters

Most CPAP machines use two filter types stacked together. The disposable hypoallergenic filter (typically a white pleated panel) should be replaced monthly. The reusable pollen filter (typically a gray foam panel) should be rinsed weekly and replaced every six months.

The disposable filter does the bulk of the work, catching the smallest particles your bedroom air carries: dust mites, pet dander, pollen fragments. A clogged disposable filter forces the motor to work harder, which can increase noise, reduce pressure accuracy on auto-titrating machines, and shorten the motor's lifespan over years.

Signs the disposable filter needs replacing:

• Visible discoloration (gray, brown, or yellow)
• Reduced airflow or noticeably increased machine noise
• Any tears, holes, or compressed spots that break the seal

Signs the reusable filter needs replacing:

• Discoloration that does not rinse out
• Loss of shape or structural integrity
• Persistent odor after rinsing and air-drying

Never run your CPAP without filters. They protect the motor and prevent dust and allergens from entering your airway. A 30-pack of replacement filters costs about as much as one mask cushion and takes 10 seconds to swap.

Disposable filter 30-packs

Best Value

AirSense 11 Disposable Filter (30-pack)

30-pack of disposable filters compatible with the AirSense 11. Filter geometry is model-specific to the AS11 (the AS10 pack is a different shape). Monthly replacement for almost three years per pack.

Compare on Amazon→

Best Value

AirSense 10 / AirCurve 10 Disposable Filter (30-pack)

30-pack of disposable filters compatible with AirSense 10, AirCurve 10, S9, and AirStart 10 machines. Monthly replacement for almost three years per pack.

Compare on Amazon→

Humidifier Water Chamber

The water chamber develops mineral deposits over months of use, even with distilled water. With tap water the buildup is much faster and harbors more biofilm. The Centers for Disease Control and Prevention notes that respiratory equipment exposed to standing water at room temperature is a known reservoir for opportunistic bacteria (most relevantly for CPAP users, certain non-tuberculous mycobacteria), which is the underlying reason every CPAP manufacturer's user guide tells you to use distilled water and clean the chamber regularly.

Signs it needs replacing:

• White mineral buildup that does not dissolve with a vinegar soak
• Cracks, chips, or clouding in the plastic
• Gasket or lid seal that no longer seals properly (causing leaks or reduced humidity output)
• Persistent odor after cleaning
• Discoloration that has penetrated the plastic surface

Using distilled water instead of tap water significantly extends chamber life. If you have been using tap water and notice white buildup, a monthly soak in a 1:3 white vinegar and water solution for 20 minutes can dissolve light deposits. Heavy mineral scale that has bonded to the plastic is permanent, and at that point the chamber needs replacing.

Humidifier chambers and distilled water

AirSense 11

AirSense 11 Compatible Water Chamber

Replacement water chamber compatible with the AirSense 11, with a 20-pack of disposable filters included. Replace every 6 months, or sooner if you see mineral buildup or cloudy plastic.

Compare on Amazon→

AirSense 10 / AirCurve 10

ResMed AirSense 10 / AirCurve 10 Water Chamber (OEM)

Genuine ResMed part 37299 replacement chamber for the AirSense 10 and AirCurve 10. Dishwasher safe; same design through the entire AS10 / AC10 generation.

Compare on Amazon→

Daily Use

Distilled Water for CPAP

Distilled water for the humidifier chamber. Prevents the mineral scale that shortens chamber lifespan and reduces biofilm risk vs. tap water. Grocery stores carry it cheapest; this is the online option.

Compare on Amazon→

Using Your CPAP Data to Spot Wear

Your SD card data contains early-warning signals that something needs replacement, often before you notice the change at a conscious level. This is the part of the supply schedule that most users miss, and it is also where CPAP Clarity earns its keep.

Leak rate trends. A gradual increase in median leak rate over two to four weeks, with no change in mask type or sleeping habits, strongly suggests cushion or headgear wear. The leak signal usually shows up in the data before it becomes a comfort problem you would consciously notice. Your history page charts the trend night by night.

Pressure variability. On auto-titrating machines (APAP), increasing pressure variability (wider swings between the 50th-percentile and 95th-percentile pressure) can indicate that the machine is working harder to compensate for leaks or flow restriction. A clogged disposable filter is a common cause of the flow-restriction case and will show up in this signal before you notice motor noise.

Usage patterns. If you start removing your mask earlier in the night or waking more frequently, declining equipment comfort may be a factor even if you do not consciously connect the dots. The therapy score in CPAP Clarity weights both leak and usage hours, so a declining score with stable AHI often points at equipment fatigue rather than a clinical change.

Import your SD card data into CPAP Clarity to see these trends laid out in one place. The dashboard puts leak, pressure variability, and usage hours next to each other so the equipment story is easy to read.

Insurance Coverage Tips

Most private insurance plans and Medicare Part B cover CPAP supply replacements on a set schedule that closely mirrors the table at the top of this article. To stay covered:

• Your prescribing physician must have an active CPAP prescription on file
• Your DME supplier handles the ordering and billing through your insurance plan
• Many DME suppliers offer auto-ship programs that send replacement supplies on the covered cadence (set-it-and-forget-it, but check that you are not paying for parts you have not actually run out of)
• Keep your compliance data current; some plans require documented usage to continue covering supplies
• Plan ahead for the multi-year supply bill, since tubing, cushions, and filters add up over the life of your machine. The CPAP cost calculator guide breaks out the running totals so the budget is not a surprise.

If you are paying cash, buying cushions and filters directly is often noticeably cheaper than going through a DME supplier without insurance. The catch is that you lose the auto-ship cadence and need to remember to reorder.

A Simple Maintenance Calendar

If keeping track of replacement dates feels overwhelming, here is a simplified routine that maps cleanly onto a phone reminder:

• Every use: Empty and rinse the humidifier chamber. Wipe the mask cushion.
• Every week: Wash the mask, tubing, and humidifier chamber with mild soap and warm water. Rinse the reusable filter. The full CPAP cleaning guide walks through each step.
• Every month: Replace the disposable filter. Inspect the mask cushion and replace if worn. Pair the monthly filter swap with the CPAP deep clean (monthly) routine so the maintenance and cleaning calendars stay synchronized.
• Every 3 months: Replace the mask frame and standard tubing.
• Every 6 months: Replace headgear, reusable filter, heated tubing, and humidifier chamber.

Set recurring reminders on your phone for the monthly and quarterly items. The therapy you get from consistent maintenance is meaningfully better than the therapy you get from a machine running on tired parts, and the cost difference is small over a year.

Frequently Asked Questions

How often should I replace my CPAP mask? The mask cushion (the part touching your face) should be replaced every 2 weeks to 1 month for nasal pillows and 1 month for full face masks. The mask frame lasts about 3 months. Headgear lasts about 6 months. Most insurance plans cover replacement on this schedule.

Can I extend the life of my CPAP supplies? Yes, modestly. Wash everything weekly with mild soap and warm water, use distilled water in the humidifier, and avoid fabric softener on headgear. But silicone cushions and elastic headgear have a finite lifespan no matter how carefully you maintain them; do not push past the manufacturer's recommended interval just to save money.

What happens if I do not replace my CPAP filter on time? The motor works harder, machine noise increases, and on auto-titrating machines pressure delivery can become less accurate. Dust and allergens can also bypass the filter and enter your airway. A clogged filter does not immediately damage the machine, but running with a tired filter for months can shorten motor lifespan.

Does Medicare cover CPAP supply replacements? Yes. Medicare Part B follows the schedule in the table above. You need an active CPAP prescription and (in most cases) documented compliance with therapy. Your DME supplier handles billing.

Is it safe to use tap water in my CPAP humidifier? It is not recommended. Tap water leaves mineral scale that shortens chamber life and increases biofilm risk. The CDC and every CPAP manufacturer recommend distilled water. If distilled water is unavailable (travel, emergencies), boiled-and-cooled or filtered water is a short-term fallback, not a routine substitute.

Primary Sources

• ResMed. AirSense 11 AutoSet product page (machine specifications, supply compatibility). resmed.com AirSense 11 (opens in new tab)
• Centers for Medicare and Medicaid Services. Continuous Positive Airway Pressure Devices and Accessories: Medicare Provider Compliance Tips. Frequency limits and replacement schedule for CPAP supplies reimbursed under Medicare Part B (LCD L33718 reference). CMS provider compliance tips (opens in new tab)
• Centers for Disease Control and Prevention. Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008 (with updates). Background on biofilm formation in respiratory equipment exposed to standing water. cdc.gov executive summary (opens in new tab)