ResMed S9 CPAP H5i Heated Humidifier w/ Cleanable Water Chamber
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ResMed S9 CPAP H5i Heated Humidifier w/ Cleanable Water Chamber

Model: 36901, 36901Pink
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ResMed S9 CPAP H5i Heated Humidifier w/ Cleanable Water Chamber

Heated Humidifier w/ Washable Water Tub for Advanced Comfort and Hygiene
Providing comfort throughout the night, the ResMed S9 H5i Heated Humidifier was designed to reduce nasal congestion, prevent dry mouth and throat, and add a bonus comfort to your CPAP therapy without sacrificing the performance you receive during CPAP therapy. Compatible with any ResMed S9 CPAP, APAP, BiPAP, or VPAP device, this humidifier is a great add-on to your ResMed machine if your CPAP machine is stored in extreme climates where cold weather and condensation can have negative effects on your CPAP therapy.

Climate Control
With its ClimateLine technology, the heated humidifier allows for all the parts of your ResMed to work together with the five ClimateLine sensors to provide superior climate control throughout your CPAP therapy. The tubing has a mask sensor built in to control the temperature of the airflow into the mask at all times, so that the temperature at the mask is the same as the temperature that enters the tube, providing constant relief. The sensors around the humidifier are highly sensitive and can automatically adjust the temperature so that they can monitor the ambient temperatures and adjust accordingly to prevent rain out in the tube and mask.

Dish Washer Safe Water Tub
Very easy to take apart, the ResMed S9 H5i Cleanable Water Tub can be disassembled effortlessly and is dishwasher-safe to provide better hygiene for your CPAP therapy. Regular maintenance of this durable water tub can increase its lifespan, requiring a replacement typically after two years of use. Distilled water is recommended for all CPAP humidifiers to prevent calcium buildup, and if you choose to hand wash, warm water with a mild detergent such as baby shampoo works best. Clean and maintain your water tube and all CPAP therapy equipment like tubes and masks regularly.

Key Features

  • Dishwasher Safe Water Tub - Easy to disassemble and quick to clean
  • Compatible - Works with any ResMed S9 CPAP Machine
  • Climate Control - Provides consistent comfort ignoring ambient conditions
  • Convenient -Powered with therapy device and no separate power cord required

Reviewers Tip:

The ResMed S9 H5i humidifier comes with a new warm-up feature that allows you to warm up the humidifier to your preferred temperature beforehand so that when you are ready to begin your CPAP therapy the humidifier is already heated up and can provide the maximum and preferred amount of comfort. Navigate your display so that the Humidity Level icon is showing, then preheat the humidifier by holding the push dial down for three seconds. There will be a progress bar that says "Warming Up" which tells you how long until the humidifier reaches the temperature desired.

Disassembly of the Water Tub


What are the benefits of having humidification with your CPAP machine?
Humidifiers are a comfortable option for CPAP therapy. While not preferred by everybody, we recommend a humidifier in extreme climates or areas where the air is either cold or wet. Some CPAP users can experience dry mouth, or a dry nasal area, after CPAP use, and humidifiers can help reduce or completely eliminate the discomforts that come as a side effect of storing your CPAP machine in an area where the ambient temperatures can affect the comfort levels. Humidifiers will not affect the CPAP performance.

What's the best way for extending the life of my tub?
With regular maintenance, your tub can last up to two years before it needs to be replaced. This tub can be easily dissembled and put into a dishwasher to help the process, but it is not the only way to extend the life of your water tub. As with any humidifier and water tub, distilled water is always recommended over tap water. Tap water can lead to calcium build-up, among other things, in the tub, while distilled water can help prevent these types of build-ups. Tap water is still usable, but it will require you to replace the water tub more frequently.

Is there a simple way for me to check that my H5i heater plate is working properly?
A. Yes. To confirm whether your H5i is functioning properly, complete the following steps:

  • Disconnect the ClimateLine™ tubing and remove the water tub.
  • While the S9 is NOT running, place your hand on the heater plate to assess the temperature of the H5i heater plate. NOTE: Do NOT place your hand on the heater plate if the H5i has been running within the last 10 minutes—it could still be hot.
  • Set the humidifier output to 6.
  • Place the unit in warm-up mode and let it run for 1 minute.
  • Place your hand above the heater plate (without touching it) to confirm an increase in the heater plate temperature. Don’t place your hand directly on the heater plate as it will be hot.
  • Press the dial for three seconds to enable cooling down mode.
  • Check out this video to get more info on whether your H5i is working properly.


Available Accessories

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Return on warranty issues only.

Model 36901, 36901Pink
HCPCS Code E0562
Power 90W
Power Consumption Typical: 70W (80VA) Maximum: 110W (120VA)
Water Chamber Capacity 380 mL
Maximum Pressure 30 cm H2O
Pressure Range 4 to 20 cm H2O
Dimensions 6" x 5.7" x 3.4"
Weight 1.5 lbs
Weight with Humidifier 3.5 Lbs
Warranty 2 years for the Heated Humidifier, 1 year for the Cleanable Water Chamber
Mark l 03/03/2015
5 of 5 Stars!

Perfect! Just what I needed. Thanks this really helped my therapy.

Sherri S 11/23/2022
5 of 5 Stars!

Subject: Great Service
I am very happy with my purchasing experience with Respshop. Theirs was the lowest price I found for the item I bought. Ordering was easy, the website is simple to navigate. I received my order before anticipated, it was packaged well and arrived in perfect condition.

Jerry T 03/06/2015
5 of 5 Stars!

Originally I bought my cpap with out a humidifier and I kept getting the dry mouth. Purchasing this humidifier really help that dry mouth feeling go away.

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Have a question on this item? Ask here and we will answer it in 12-24 hours, usually in a few business hours! Questions and answers will appear here after we answer. You may also have email notifications.
Does it work with Airsense 10. Or Airstart 10?
No, it does not. That is for the S9 by Resmed. You need the water chamber 37479 or 37299 for the Airsense 10.
Is this the whole machine and humidifier? or just the heated water container
That is the humidifier for the Resmed S9 cpap.
can you give more discout,$20?
At the moment our best discount on this item is $20 by using code SAVE20JU
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