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ResMed AirSense 11 humidifier chamber, a transparent water reservoir with a max fill line, labeled for use with distilled water only.
  • ResMed AirSense 11 humidifier chamber, a transparent water reservoir with a max fill line, labeled for use with distilled water only.
  • ResMed AirSense 11 Water Chamber Replacement
  • It's advised to replace this product every 6 months to achieve best results
  • ResMed AirSense 11 Water Chamber Replacement
  • ResMed AirSense 11 Water Chamber Replacement
  • ResMed AirSense 11 Water Chamber Replacement
  • ResMed AirSense 11 humidifier chamber, a transparent water reservoir with a max fill line, labeled for use with distilled water only.
  • ResMed AirSense 11 Water Chamber Replacement
  • It's advised to replace this product every 6 months to achieve best results
  • ResMed AirSense 11 Water Chamber Replacement
  • ResMed AirSense 11 Water Chamber Replacement
  • ResMed AirSense 11 Water Chamber Replacement
ResMed AirSense 11 Water Chamber Replacement
ResMed

ResMed AirSense 11 Water Chamber Replacement

(186 reviews)
$29.00 $44.00

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Humidification should feel effortless. The ResMed AirSense 11 Water Chamber Replacement is the removable tub made for the AirSense 11 HumidAir system, helping you maintain consistent, comfortable moisture night after night without complicating your routine.

Designed to be easy to fill and hand‑clean, this durable chamber supports active heated humidification so your therapy stays steady and predictable. For a seamless fit with your setup, it’s purpose‑built for the AirSense 11 platform.

  • Consistent comfort: Supports steady humidification throughout the night.
  • Simple upkeep: Clear max fill line and removable design for quick care.
  • Durable build: Injection‑molded plastic, stainless steel, and silicone seal with a 90‑day warranty.
  • Made for AirSense 11: Fits the HumidAir system for a precise, secure fit.
  • Room to breathe: 380 mL maximum capacity for fewer refills.

Manufacturer Product Number: 39100

What's included

Standard Water Chamber for AirSense 11 Humidair Heated Humidifier

User Guide

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ResMed AirSense 11 humidifier chamber, a transparent water reservoir with a max fill line, labeled for use with distilled water only.

Keep your AirSense 11 humidification consistent and hygienic
Made for AirSense 11

This chamber is specifically designed for the AirSense 11. Your machine can even help you stay on schedule with the Humidifier Set function that provides replacement reminders. Browse other compatible components on the curated AirSense 11 Replacement Parts page or learn more about the device itself on the AirSense 11 AutoSet CPAP Machine page.

Care and cleaning, simplified

For best results, use room‑temperature distilled water only and avoid additives like oils or perfumes, which can affect materials and humidification output. Wipe the tub daily and dry it out of direct sunlight; wash weekly with warm water and mild detergent. The standard chamber is not dishwasher safe—hand‑wash only.

  • Keep water below the marked max fill line.
  • Empty the tank before moving your device.
  • Rinse well and air‑dry fully between uses.
Set up right, sleep right

Place your machine on a level surface below head height to help prevent water from reaching the mask or tubing. Do not power on without the tank installed; if you’re not using water, keep the tank in place and set humidification to 0 to protect the motor and maintain proper airflow.

  • Avoid overfilling or tilting the device on its side.
  • Check for leaks or cracks and replace promptly if found.
Popular AirSense 11 Add-Ons
Specifications
Product Model Standard 11
Vendor Product Number 39100
Materials Injection Molded Plastic (Acrylonitrile Butadiene Styrene), Stainless Steel, Silicone Seal
Tax Category CPAP Replacement Supplies
Billing Code A7046 (Humidifier Chamber)
Product Life 6 - 12 Months
4.7
Rated 4.7 out of 5 stars
Based on 186 reviews
Total 5 star reviews: 158 Total 4 star reviews: 17 Total 3 star reviews: 5 Total 2 star reviews: 1 Total 1 star reviews: 5
94%would recommend this product
Customers Talked About
Slide 1 selected
Reviews Summary
Customers say this water chamber fits perfectly and works as expected for their AirSense 11 machine. Many appreciate how easy it is to clean and fill, with users noting it helps keep their airways moist during sleep. The chamber holds water throughout the night on moderate humidity settings and arrives quickly in good condition. Some mention difficulty getting it to seat securely without air leaks, and a few find the capacity runs out before morning or the design awkward to fill without spilling. A small number report durability concerns with cracking or leaking after a few months. Overall, customers value the genuine ResMed quality and reasonable pricing.
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186 reviews
  • Heriberto S.
    Verified Buyer
    21 seconds ago
    Rated 5 out of 5 stars
    Aiden’s 11 Water chamber

    Excellent product and with it I get a great night sleep.

    Was this helpful?
  • Susan N.
    Verified Buyer
    2 days ago
    Rated 5 out of 5 stars
    Water chamber

    Very easy to keep clean

    Was this helpful?
  • Julie C.
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    Best investment ever

    Investing in the Resmed Airsense has been worth every self pay dollars I’ve spent !

    Was this helpful?
  • DOUGLAS G.
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    Excellent water chamber for the ResMed AirSense 11

    This water chamber works perfectly for the ResMed AirSense 11 CPAP machine. It is recommended that the water chamber be cleaned often and replaced periodically (every 6 months), and the manufacturer also recommends that the chamber only be filled with distilled water to prevent mineral buildup in the CPAP machine and in the chamber. I would also recommend keeping the chamber out of sunlight to prevent mold growth, and emptying the unit when not in use. I've bought this many times through CPAP.com and never had any issues with the product.

    Was this helpful?
  • Shawn B.
    Verified Buyer
    3 days ago
    Rated 5 out of 5 stars
    Water chamber fits and works as needed

    Water chamber works great.

    Was this helpful?

ResMed AirSense 11 Water Chamber Replacement

$29.00 $44.00

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