October 23, 2026 13 min read

ResMed AirFit N20 Cushion Large:

Selecting the right CPAP mask cushion is crucial to having a comfortable night’s sleep. If your existing cushion doesn’t feel comfortable, leaks or is showing wear, you might need to replace it to get a better fit for your mask. Resmed airfit n20 cushion large is an alternative to the resmed airfit n20 nasal mask cushion for the users who are in need of a large-sized cushion.

The idea at Alfa Healthcare Supply Inc. is to make things easy and convenient for you to find the right CPAP supplies. You’ll discover what the large cushion is for, how to test to ensure mask fit, the proper ways to clean the mask, and indications that it’s time for a replacement.

It can help you decide which option is right for you, and how to take care of your equipment.

What is the ResMed AirFit N20 Cushion Large?

The resmed airfit n20 cushion large is a replacement silicone cushion for the ResMed AirFit N20 nasal CPAP mask. The cushion is located around the nose and acts as the contact point between the face and the mask.

The machine blows air through the mask to keep your airways open during sleep during CPAP therapy. The correct fit cushion will facilitate that airflow to the designated path, and will minimize air leaks.

ResMed-AirFit-N20-Cushion-Large-to-Comfort-Fit-and-Replacement

ResMed’s AirFit N20 features a silicone cushion called the InfinitySeal that provides flexibility to ensure a steady seal during CPAP therapy at various pressure levels.

AirFit N20 comes three sizes: Large, small, and medium. It is essential to choose a suitable size as if the cushion is too small or too large, it can lead to reduced comfort, leakage, and impact overall mask performance.

Product details at a glance

  • Product: ResMed AirFit N20 replacement cushion
  • Size: Large
  • Material: Silicone
  • Product type: Replacement CPAP nasal mask cushion
  • Compatible mask: ResMed AirFit N20
  • Also compatible with: ResMed AirFit N20 for Her mask systems, where the cushion size is appropriate
  • Purpose: To provide the mask’s facial seal during CPAP therapy

Always confirm the exact mask model and replacement part before ordering.

Why Choose the ResMed AirFit N20 Cushion Large?

If the mask cushion is worn out or ill-fitting, there may be discomfort during CPAP use. Replacing just the cushion may be an easy and inexpensive way to replace the mask if the rest of the mask is still in good shape without having to purchase a new mask.

Below are some of the reasons why users may find the resmed airfit n20 cushion big. 

1. Designed for a Secure Seal

The soft silicone cushion fits around the nose to ensure a comfortable fit. It fits securely to reduce air leaks while you’re using CPAP.

But both the correct size of cushion and the correct adjustment of the mask play important roles. Not all users can use a large cushion to get a good seal. 

2. Soft Silicone Contact

Silicone cushion gently envelops your nose. Regular cleaning and routine checks can help keep it comfortable and ensure a proper fit.

If this persistent redness, soreness or discomfort continues, see how the mask fits and consult your sleep expert or equipment supplier. 

3. Replaceable Design

If the cushion is worn out, you might not have to replace the mask as a whole. Designed to replace in the compatible ResMed AirFit N20 mask frame.

You don’t have to replace any components of the equipment that are still usable, and you’ll only replace the cushion.

4. Supports Your Regular CPAP Routine

A properly fitted cushion can help you maintain your prescribed CPAP routine more comfortably and consistently. Before going to bed, take a moment to check your mask and clean it regularly to keep your equipment in good condition.

How to Know If You Need the Large Cushion Size

When replacing a cushion, it’s crucial to get the right size. The ResMed AirFit N20 Cushion Large is intended for those users whose facial size and mask fitting instructions suggest that the larger size will be more appropriate for the mask. 

Consider these practical steps:

  1. Check your current cushion. If your existing AirFit N20 cushion fits comfortably and seals well, confirm its size before ordering.
  2. Use the official sizing guide. ResMed provides a sizing template to help users identify the appropriate cushion size.
  3. Check the fit around your nose. The cushion should sit securely without excessive pressure, folding, or obvious gaps.
  4. Look for repeated air leaks. Leaks may indicate an incorrect size, poor positioning, worn silicone, or headgear that needs adjustment.
  5. Ask for professional guidance if unsure. Your CPAP equipment provider or sleep specialist can help you assess the fit.

Remember that facial shape and individual comfort vary. The best size is the one that fits correctly according to the manufacturer’s guidance.

ResMed AirFit N20 Cushion Large vs. Medium and Small

The AirFit N20 cushion is available in three sizes. Understanding the differences can help you select the appropriate replacement.

Small Cushion

The small cushion is designed for users who are in the small size. It might work for individuals with a smaller nasal region, but it should be properly fitted with the help of sizing guide. 

Medium Cushion

The medium cushion is designed for those whose measurements are in the medium range. If one’s present medium cushion feels good, one might want to use the same size cushions.

Large Cushion

The resmed n20 cushion large is designed to be used by those who need a large size based on the sizing guide of the mask. It gives an alternative fit profile to the small and medium variants. 

If the cushion is too small it will feel constricting or not cover the area that is supposed to be covered. If it’s too big, it will either not fit properly or become separated. The headgear should not be tightened to solve either of these problems.

Use ResMed’s official sizing template for the most reliable sizing, rather than making educated guesses. 

How to Replace the ResMed AirFit N20 Cushion Large

Replacing the cushion is generally straightforward. Follow the instructions in the user guide for your exact mask model.

Step 1: Remove the Mask

Turn off your CPAP machine and remove the mask according to the manufacturer’s instructions. Place it on a clean surface.

Step 2: Detach the Old Cushion

Hold the mask frame securely and gently pull the old cushion away from the frame. Avoid using sharp tools or excessive force that could damage the frame.

Step 3: Inspect the Mask Frame

Check the frame for cracks, damage, or other visible wear. If any component appears damaged, consult your equipment provider before using the mask again.

Step 4: Fit the New Cushion

Take your replacement cushion and align it with the mask frame. Press it into place according to the AirFit N20 assembly instructions. The cushion is shaped to fit the frame in the correct orientation.

Step 5: Check the Assembly

Make sure the cushion is seated evenly and securely. Reconnect the other mask components if you removed them.

Step 6: Test the Fit

Put the mask on and adjust the headgear according to the user guide. Connect the tubing and start the CPAP machine. Check for unusual leaks and make sure the cushion sits comfortably around your nose.

If the mask continues to leak or feels uncomfortable, review the fit and sizing before tightening the straps further.

How to Clean the ResMed AirFit N20 Cushion Large

Regular cleaning helps remove facial oils, dirt, and residue that can affect the cushion’s condition and seal.

ResMed’s guidance for the silicone AirFit N20 cushion includes daily cleaning.

Follow these general steps:

  1. Remove the cushion from the mask frame if required by the cleaning instructions.
  2. Wash it in warm water with a mild liquid detergent.
  3. Gently clean the surface without stretching or damaging the silicone.
  4. Rinse thoroughly with clean, drinking-quality water.
  5. Inspect the cushion for remaining residue.
  6. Allow it to air-dry away from direct sunlight before using it again.

Avoid harsh cleaning chemicals, strong solvents, and products that are not approved for your equipment. Follow the official instructions for cleaning the rest of the mask as well.

Never use a cushion that remains wet, visibly damaged, or contaminated with cleaning residue.

When Should You Replace Your AirFit N20 Cushion?

The condition of your cushion is an important part of CPAP equipment maintenance. ResMed’s published replacement guidance recommends replacing the AirFit N20 silicone cushion approximately once a month, although individual replacement needs may vary.

Consider replacing your cushion if you notice:

  • Visible tears, cracks, or other damage.
  • Silicone that has become worn or deformed.
  • Persistent air leaks despite correct fitting.
  • A cushion that no longer sits securely in the frame.
  • Discoloration or buildup that does not come off with proper cleaning.
  • A noticeable decline in comfort or mask performance.

Do not wait for a scheduled replacement date if the cushion becomes damaged or stops fitting correctly. Follow your equipment provider’s advice and any applicable replacement schedule.

AirFit N20 Cushion vs. AirTouch N20 Cushion

The AirFit N20 and AirTouch N20 are related mask systems, but their cushions use different materials.

The AirFit N20 uses a silicone cushion, while the AirTouch N20 uses a memory foam cushion. ResMed states that the compatible N20 frame design allows the AirTouch N20 memory foam cushion to be used with the AirFit N20 system.

Even so, make sure you understand which replacement you are buying.

If you prefer a silicone cushion that can be washed according to the manufacturer’s daily-cleaning instructions, the resmed airfit n20 cushion large may be the appropriate choice when the large size fits your mask.

If you are considering memory foam instead, check the AirTouch N20 product details and its different care instructions before purchasing.

Common Problems and Helpful Tips

Air Leaks Around the Nose

Check that the cushion is correctly positioned and seated in the frame. Review the size and headgear adjustment. Persistent leaks may require professional fitting assistance.

Red Marks or Skin Irritation

Excessive strap tension, incorrect sizing, or prolonged pressure may contribute to discomfort. Clean the cushion as directed and review the fit. Seek advice from a healthcare professional if irritation continues.

Cushion Keeps Coming Loose

Inspect the frame and cushion for damage and confirm that the cushion is fully seated. Replace damaged components as needed.

Reduced Comfort During Sleep

Check for wear, residue, incorrect positioning, and headgear tension. If the problem continues, ask your equipment provider whether a different cushion size or mask style may be suitable.

Where to Buy the ResMed AirFit N20 Cushion Large

When purchasing a replacement, confirm the manufacturer, model, size, and compatibility before placing your order.

Alfa Healthcare Supply Inc. provides medical supplies and home healthcare products. You can visit the Alfa Healthcare Supply website to explore available products and check whether the ResMed AirFit N20 large cushion is currently listed.

Before completing your purchase, verify:

  • The product is the AirFit N20 silicone cushion.
  • The selected size is large.
  • The cushion is compatible with your existing mask.
  • The listing clearly identifies the replacement part.
  • The current price, shipping information, and return policy meet your needs.

Product availability and pricing may change, so confirm these details directly with the supplier. If the item is not listed, contact Alfa Healthcare Supply Inc. to ask about availability.

Conclusion: ResMed AirFit N20 Cushion Large

A properly fitted CPAP cushion is an important part of a comfortable and reliable sleep therapy routine. The resmed airfit n20 cushion large is a replacement option for users whose AirFit N20 mask requires the large silicone cushion.

Choosing the correct size, cleaning the cushion regularly, checking for damage, and replacing worn parts can help you maintain your equipment. You do not need to replace the entire mask when only the cushion requires replacement, provided the other components remain in good condition.

For your next replacement, confirm the size and compatibility before ordering. Visit Alfa Healthcare Supply Inc. to explore available medical supplies and check current product availability.

Medical information note: This article provides general product information and is not a substitute for medical advice. Follow the manufacturer’s instructions and consult your healthcare provider or CPAP equipment supplier if you have ongoing mask leaks, discomfort, or questions about your therapy.

Frequently Asked Questions: ResMed AirFit N20 Cushion Large

1. What is the ResMed AirFit N20 Cushion Large?

It is a replacement silicone cushion designed for the ResMed AirFit N20 nasal CPAP mask. The large size is intended for users whose measurements correspond to that size.

2. Is the large cushion compatible with the AirFit N20 for Her?

The AirFit N20 cushion system offers interchangeable sizes, but you should verify the specific mask model and sizing requirements before ordering. The large cushion is not the standard size supplied with every version of the mask.

3. How often should I replace my AirFit N20 cushion?

ResMed’s published guidance recommends replacing the silicone cushion approximately once a month. Replace it sooner if it becomes damaged or no longer fits correctly.

4. Can I clean the AirFit N20 large cushion every day?

Yes. The silicone cushion should be cleaned daily according to the manufacturer’s instructions. Use mild liquid detergent and warm water, rinse thoroughly, and let it air-dry away from direct sunlight.

5. How do I know if I need a large cushion?

Use the official ResMed sizing template and check the fit of your current mask. If you experience repeated leaks or discomfort, consult your equipment provider rather than automatically choosing a larger size.

6. Can I replace only the cushion instead of buying a complete mask?

Yes, if the existing mask frame and other components remain in good condition and the replacement cushion is compatible with your mask.

7. Is the AirFit N20 cushion made from silicone or memory foam?

The AirFit N20 cushion is made from silicone. The related AirTouch N20 cushion uses memory foam, so check the product description carefully before buying.

8. Where can I find the ResMed AirFit N20 Cushion Large?

Visit Alfa Healthcare Supply Inc. to review its product catalog or contact the supplier to confirm current availability, pricing, and compatibility.

9. What should I do if my new cushion still leaks?

Check that it is correctly installed, the size is appropriate, and the headgear is adjusted according to the user guide. If leaks continue, seek assistance from your CPAP equipment provider.

10. Do I need a prescription to buy a replacement cushion?

Requirements can depend on the supplier, location, and applicable rules. Check with the seller before purchasing.