Skip to product information
AirSense 11 Side cover
  • AirSense 11 Side cover
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • AirSense 11 Side cover
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
  • ResMed AirSense 11 Side Cover (End Cap)
ResMed AirSense 11 Side Cover (End Cap)
ResMed

ResMed AirSense 11 Side Cover (End Cap)

(69 reviews)
$18.40

Free Shipping Over $50

Price Match Guarantee

If you prefer CPAP therapy without added moisture, the ResMed AirSense 11 Side Cover replaces the humidifier chamber to create a clean, compact setup that allows your machine to run without humidification.

This side cover will automatically disable the heater plate and heated tubing on your AirSense 11 when installed. To regain these controls, simply swap back to your standard water chamber.

  • Streamlined setup: Run therapy without the water chamber installed.
  • Clean, finished look: Covers the open side for a tidy profile.
  • Easy attachment: Installs and removes in moments.

Manufacturer Product Number: 39226

What's included

AS11 Side Cover - What's Included

User Guide

Prescription Policy

Federal law requires we have valid prescription before this product can ship.



Don't have a prescription? Our CPAP Guides have helped over 2.3 million people with one-on-one service. 



Already have a prescription? Great. You can upload it after checkout.
AirSense 11 Side cover

A sleek look for your AirSense 11
Setup & cleaning

Installation:

  • Power down and remove the AirSense 11 water chamber.
  • Align the Side Cover and press into place until flush.
  • To restore humidification, reinstall the water chamber.

Cleaning:

  • The side cover only needs to be wiped down externally as needed.
  • Do NOT wash the inside of the side cover or use water. There is sound-abatement foam inside the side cover, which is not designed to handle water.
  • The side cover is not designed to allow easy access to this interior foam for drying, so introducing water to it will allow mold to grow inside, and you'll need to replace it.
  • Inspect the silicone seals where the side cover connects to your machine's air outlets every 6 months for visible signs of cracking or leaks and replace as needed.

Additional tips:

  • The side cover introduces a closed air circuit that will not house moisture.
  • Only filtered air flows through it, so you don't need to clean the inside.
  • Once the side cover is inserted, there's no need to remove it unless you're planning to replace it with the standard water chamber.
  • If you still want to use heated tubing without humidification, continue using the empty water chamber instead, as this side cover will disable heated tubing automatically.
Find more accessories for AirSense 11

Keep your system ready with maintenance parts and power options designed for the AirSense 11.

Looking for the device itself? Explore the AirSense 11 AutoSet CPAP Machine.

Specifications
Product Model AirSense 11 Side Cover
Vendor Product Number 39226
Tax Category Therapy Accessories

FAQs about the ResMed AirSense 11 Side Cover (End Cap)

Do I need to clean the AirSense 11 side cover?

You only need to wipe down the outside of the side cover as needed. The inside houses sound-abatement foam that should never be exposed to water.

While this foam is not accessible from the outside, the housing is not waterproof, and water will get into the foam if you try to wash it. The housing is not designed to be easy to take apart, so it will be difficult to dry the foam if it is exposed to water.

The inside of the side cover will only be exposed to filtered air and should not have moisture present at any point. Just as you do not need to clean the inside of your machine's motor, you do not need to clean the inside of the side cover, either.

Why should I use the AirSense 11 side cover?

If you do not use your humidifier or heated tubing, the AirSense 11 side cover offers quieter therapy and a more compact size for your AirSense 11 by replacing your current water chamber. The side cover uses sound-abatement foam to reduce airflow noise and slightly reduces the size of your AirSense 11.

4.8
Rated 4.8 out of 5 stars
Based on 69 reviews
Total 5 star reviews: 62 Total 4 star reviews: 4 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 1
96%would recommend this product
Customers Talked About
Reviews Summary
Customers say this end cap allows them to use their machine without the water chamber, making it more compact for travel and storage. Many appreciate that it eliminates the need to carry distilled water or manage a water tank. Users find it easy to install—it simply snaps into place—and note the machine automatically adjusts settings when the cap is in use. Some mention it reduces weight and frees up space in travel cases. A few note the size reduction is modest, and one customer felt the price is high for the component. Overall, customers find it practical for those who don't use humidification.
Write a Review (Opens in a new window)
69 reviews
  • James J. V.
    Verified Buyer
    2 days ago
    Rated 5 out of 5 stars
    Perfect fit

    Wanted to leave the water reservoir at home while I travel. End cap protects the machine nicely

    Was this helpful?
  • Patricia C.
    Verified Buyer
    4 days ago
    Rated 5 out of 5 stars
    Cover is useful

    I interchange this cover with the “water” cover that came with the machine.

    Very useful if traveling. Used it on an overnight getaway…..no need to bring water.

    Was this helpful?
  • Patricia W.
    Verified Buyer
    6 days ago
    Rated 5 out of 5 stars
    Good product

    Delivery was prompt and product works!

    Was this helpful?
  • Lindsay W.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    quieter than water chamber, less to clean

    works great, fast shipping, excellent customer service!

    Was this helpful?
  • Rick P.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Works great

    Fits well and takes up less space than the water tank.

    Was this helpful?

ResMed AirSense 11 Side Cover (End Cap)

$18.40

Why cpap.com

We are experts in what we do!

25+ years of sleep apnea expertise, 2+ million masks personally fitted, and 500,000+ CPAP machines set to prescription. Our Sleep Specialists are here when you need them.

2.3+ million sleepers served since 1999

10,000+ five-star service reviews

USA Today Best Customer Service 2025

Call 1-800-356-5221

Smiling woman with a headset next to a customer service award badge.