Replace CPAP masks every three to six months, tubing every three months, and filters monthly or as needed

Your CPAP supplies wear out on a schedule. A mask that leaks, tubing that cracks, or a clogged filter forces your machine to work harder and delivers less air pressure to your airway. The timing depends on what part you are replacing and how often you use your machine.

Most people using CPAP nightly should replace their mask cushion every three months, the full mask frame every six months, tubing every three months, and the reusable filter monthly or whenever it looks gray or clogged. Some supplies last longer if you clean them regularly and store them away from heat and sunlight. Others fail faster if you sleep hot, sweat heavily, or live in a humid climate.

Your insurance may cover these replacements under your CPAP equipment benefit, but only if you order them through a durable medical equipment (DME) supplier that your insurance recognizes. Ordering on your own schedule rather than waiting for your supplier to send them means you control when you get fresh supplies instead of running out unexpectedly.

Key Takeaways

  • CPAP mask cushions should be replaced every three months because oils from your skin and nightly wear break down the silicone or gel material.
  • Tubing degrades from moisture, heat, and the pressure inside it, so replace it every three months even if it looks fine on the outside.
  • Reusable filters clog with dust and should be washed monthly and replaced when they no longer rinse clean or look permanently discolored.
  • Your insurance covers replacements through an approved DME supplier, but you must order them yourself—suppliers do not automatically send new supplies on a schedule.
  • Cleaning your mask and tubing daily with mild soap and water, and storing them away from direct sunlight and heat, can extend their life slightly but does not eliminate the need for regular replacement.

CPAP mask cushions: every three months

The cushion is the part that touches your face—whether it is a nasal pillow, nasal mask, or full-face mask. It is made of silicone, gel, or foam, and it breaks down from nightly contact with your skin oils, sweat, and the pressure of the air pushing against it. After three months of nightly use, the material loses its seal and becomes less flexible, which causes leaks that reduce the pressure reaching your airway.

You will notice the cushion needs replacing when you wake up with marks on your face that do not fade within an hour, when you hear air whistling out of the mask, or when you have to tighten the straps more than usual to stop the leak. Some people replace the cushion every two months if they sleep hot or sweat heavily; others stretch it to four months if they use the machine only a few nights per week.

The cushion is the cheapest part to replace, usually costing between $30 and $80 through insurance or out of pocket. Ordering a new one before the old one fails means you never have a night without a proper seal.

CPAP mask frame: every six months

The frame is the plastic or silicone structure that holds the cushion and connects to the headgear. It lasts longer than the cushion because it does not touch your skin directly, but it still wears out. The connection points where the cushion attaches weaken, the headgear straps stretch, and small cracks can form where the tubing connects.

Replace the entire mask frame every six months, or sooner if you notice cracks, if the cushion no longer stays seated properly, or if the headgear straps no longer hold the mask in place even when tightened. Some people use two masks on rotation—one while the other dries after cleaning—which can extend the life of each frame slightly because neither is in use every single night.

A full mask replacement costs between $80 and $300 depending on the model. Your insurance covers this cost through your DME supplier, though you may have a copay.

CPAP tubing: every three months

The tubing carries warm, humid air from your machine to your mask. Inside, the pressure and moisture gradually degrade the plastic. Over time, small cracks form on the inside where you cannot see them, and the tubing becomes less flexible. A cracked tube leaks air, which means your machine has to work harder to maintain pressure, and you may not receive the full pressure you need.

Replace tubing every three months even if it looks fine on the outside. If you notice condensation building up inside the tubing (called rainout), you may need to replace it sooner or use a heated tubing model, which reduces condensation and may last slightly longer. Tubing that has visible cracks, splits, or holes should be replaced when ready.

Standard tubing costs $15 to $40 per tube through insurance or out of pocket. Heated tubing costs more—usually $40 to $80—but many people find it worth the cost because it reduces condensation and the tubing lasts longer before degrading.

CPAP filters: monthly or when clogged

Your CPAP machine has at least one filter, usually a reusable foam or mesh filter that traps dust, pet hair, and other particles before they enter the machine. Some machines also have a disposable filter. The reusable filter should be rinsed under warm water once a week and replaced entirely when it no longer rinses clean or when it looks permanently gray or discolored.

For most people using the machine nightly in a normal home, a reusable filter lasts about one month before it needs replacing. If you have pets, live in a dusty area, or have a smoker in the home, replace it every two to three weeks. If you use the machine only a few nights per week, you may stretch it to six weeks.

A disposable filter, if your machine uses one, should be replaced monthly. Reusable filters cost $10 to $25 each and are often sold in packs of two or three. A clogged filter makes your machine work harder and can reduce the air pressure you receive, so do not wait until the filter is visibly falling apart.

How to know when supplies need replacing

The easiest way to stay on schedule is to mark your calendar when you first use your CPAP and set a phone reminder for three months later. But you can also watch for signs that a part is failing. A mask that leaks no matter how tight you make the straps, tubing that cracks when you bend it, or a filter that stays gray after rinsing all mean it is time to order new supplies.

Keep a log of when you last replaced each part. Write it on a sticky note on your machine, or take a photo of the receipt and save it to your phone. This way, if you forget, you can look back and see that it has been three months since you ordered a new mask cushion.

If you are unsure whether a part is still good, replace it anyway. The cost of a new cushion or filter is small compared to the cost of a night without proper CPAP therapy or the risk of damaging your machine by using a clogged filter.

Ordering through your insurance and DME supplier

Your insurance covers CPAP supplies as durable medical equipment, but only through a supplier your insurance has contracted with. Call your insurance company or check your member website to find the approved DME suppliers in your area. You can order from any of them, and your insurance will cover the cost (minus any copay you owe).

You do not have to wait for your supplier to contact you. Call or go online to the supplier's website and order new supplies yourself. Tell them your machine model and mask model, and they will send the right parts. Most suppliers ship within one to three business days.

If you order supplies out of pocket instead of through insurance, prices vary widely. A mask cushion might cost $30 to $80, tubing $15 to $40, and filters $10 to $25. Ordering through insurance is usually cheaper because your insurance negotiates prices with the supplier.

Cleaning and storage to extend supply life

Cleaning your supplies daily slows down wear but does not eliminate the need for replacement. Wash your mask cushion, frame, and tubing with mild soap and warm water every morning after you use the machine. Let them air dry completely before using them again. This removes skin oils and sweat that break down the material faster.

Store your supplies away from direct sunlight, heat, and humidity. Do not leave your mask on the nightstand in the sun or store your tubing in a hot closet. Heat and UV light degrade silicone and plastic, so a cool, dark drawer is better. If you live in a very humid climate, consider storing supplies in a container with a desiccant packet to absorb moisture.

Even with perfect cleaning and storage, supplies still need replacing on schedule. Cleaning extends life by a month or two at most, but the material still degrades from nightly use and pressure.

Frequently Asked Questions

Can I use the same mask cushion longer than three months if I take good care of it?

You can stretch it to four months if you clean it daily and live in a dry climate, but by month four or five the seal will start to fail. A leaking mask means your machine cannot deliver the full pressure you need, which defeats the purpose of using CPAP. It is better to replace it on schedule than to lose therapy nights because of a worn-out cushion.

What happens if I use a clogged filter?

A clogged filter forces your machine to work harder to push air through it, which can reduce the pressure reaching your mask and may damage the machine's motor over time. You will also breathe in more dust and particles that the filter was supposed to trap. Replace the filter monthly to avoid these problems.

Do I have to order supplies through my insurance, or can I buy them anywhere?

You can buy them anywhere, but ordering through your insurance-approved DME supplier is usually cheaper because your insurance covers most of the cost. Buying out of pocket from online retailers or medical supply stores costs more unless you find a sale. Check with your insurance first to see what they cover.

How do I know which supplies fit my machine?

Look at your machine's model number (usually on the back or bottom) and your mask's model number (usually on the cushion or frame). When you call your DME supplier or order online, give them both numbers and they will send the correct parts. If you are not sure, call your supplier and they can look it up for you.

What if I only use my CPAP a few nights per week?

You can stretch the replacement schedule slightly—replace the mask cushion every four to five months instead of three, and the tubing every four months instead of three. But do not skip replacements entirely. Even supplies used part-time degrade from moisture and pressure, and a worn-out cushion will leak no matter how often you use it.