$36.00
- CPAP Masks
Nasal
Best for those who breathe through the nose only or use a chinstrap.
Full Face
For those that need or prefer delivery to the mouth and nose.
Nasal Pillow
Lightweight and minimal masks that seal at each nostril.
Other Masks
Nasal prong, hybrid, oral, and total face masks.
All Masks
Having problems with mask fit? Shop all our masks for the best fit.
Mask Parts
Keep your CPAP mask in top shape and extend its life by replacing parts regularly.
Mask Kits
Need to replace more than one piece? Mask Kits include everything except headgear.
- CPAP Machines
CPAP Machine
Provide therapy air at one specified pressure continuously.
Auto Adjusting CPAP
Automatically adjust pressure throughout the night for a more comfortable experience.
BiLevels & BiPAP®
Provide one pressure for inhalation and a separate pressure for exhalation.
Travel Sized Machine
Smaller machines designed to be taken during travel.
All Machines
View all types and models of machines on one page.
- CPAP Supplies
Comfort & Cleaning
Accessories to keep your therapy equipment clean and comfortable.
CPAP Mask Parts
Keep your CPAP mask in top shape and extend its life by replacing parts regularly.
CPAP Filters
The cleaner your filters, the cleaner the air you breathe.
CPAP Hoses (Tubing)
We offer a variety of hose types and lengths to enhance your setup.
Power Solutions
Batteries, inverters, converters, power cords, and parts.
CPAP Humidifiers
Humidifiers provide moisture to help prevent dryness of the nose and throat.
CPAP Humidifier Parts
Replacement items for a wide range of humidifiers.
CPAP Machine Parts
We have a huge selection of machine parts for almost every machine.
CPAP Software
Various supplies to review advanced therapy data.
More Solutions
Various products such as oxygen and EPAP solutions.
- Sleep Accessories
Bedding
Shop our comfortable, stylish, and therapeutic blankets and pillows.
Sleep Masks
Increase your sleeping time with one of our healing and luxurious sleep masks.
Snoring Aids
Quiet the nighttime roar with our selection of snoring aids.
White Noise Sound Machines
Browse our top-of-the-line white noise machines to help you fall and stay asleep.
Health Monitors
Improve your night by tracking your sleep quality, health, and fitness.
- Starter Pack
- Home Sleep Test NEW!
- Home /
- CPAP Supplies /
- CPAP Humidifiers /
- Humidifier Chambers /
- ResMed
Hover to zoom
H4i™ Water Chamber Upgrade Kit for HumidAire 3i™ Heated Humidifiers
BY ResMed Item #26959
$36.00
146 Reviews
Quantity
1
Order ships today if placed by 4PM CST
Need replacement parts & accessories? Shop Now
H4i Upgrade Kit for HumidAire 3i Overview
This is the upgrade kit for S8 CPAP and VPAP Series H3i Heated Humidifier.
The kit ships out as two separate pieces:
- H4i Top Cover & Seal - ResMed part number 26953
- H4i water Chamber - ResMed part number 26952
Switch to the H4i chamber design and improve humidity by 30%. The All-in-one design helps keep the system compact as well as improving water capacity up to 390ml.
An upgrade kit which includes a dishwasher safe chamber for easier cleaning is also available You can view and order that kit here: Dishwasher Safe H4i™ Water Chamber Upgrade Kit for HumidAire 3i™ Heated Humidifiers
This Product Includes...
Water Capacity 390ml to Max Fill Line
Warranty Length: 90 Days
CPAP.com always offers these services
- 24 hour access to our CPAPtalk.com Support Forum
- Learning Center for information on sleep apnea and cpap equipment
- Consumer Purchasing Trends Reports
- Warranty Services for all items purchased through CPAP.com
- Insurance Compliant Invoices
- Free Prescription Request System
Manufacturer Note
- Some product images supplied by ResMed © ResMed 2010 Used with Permission.
- All services provided by CPAP.com, including advertisement, ordering, sale, delivery, instruction, and setup of the products are performed solely by CPAP.com and independently of the manufacturer.
Humidaire H3i Water Chambers are no longer available. H3i users must purchase this kit or the Dishwasher Safe H4i™ Water Chamber Upgrade Kit to use either the H4i Water Chamber or Dishwasher Safe H4i Water Chamber.
As of May 2013 - CPAP.com will ship out this kit as two separate products in ResMed packaging. ResMed is no longer making the pre-packaged kit available. The instructions for installation is not included. Part numbers included:
- H4i Top Cover & Seal - ResMed part number 26953
- H4i water Chamber - ResMed part number 26952
Maximum Fill Level Tips
- Do not fill the water tank above the maximum fill line. Damage to the humidifier or therapy device may occur. If the water tank is overfilled, water may leak out of the tank inlet (located on the back of the tank) when installing the tank lid.
- When disconnecting the hose from the tank outlet, be careful to ensure that the hose is not holding water. Water could travel through the hose and into the machine.
- Use only room temperature distilled water in the tank. Do not put any chemicals or additives into the water. Possible airway irritation or damage to the water tank may result.
- Remove the tank, empty all water, and replace the empty tank before transporting the humidifier base.
- Do not attempt to fill the water tank while it is inside the humidifier.
- To avoid spilling, do not disconnect the humidifier from the therapy device with water in the tank. Remove the water tank from the humidifier before disconnecting the therapy device.
- Do not turn the humidifier on without the water tank installed. The Humidifier number setting must remain on 0 if there is no water in the water tank.
- The humidifier door must be set in the open position before removing the water tank. Do not remove the water tank without making sure that the humidifier door locks into the open position.
- Do not move the humidifier while the water tank has water in it.
Manufacturer Warranty
This product comes with a 90 Day Manufacturer Warranty. CPAP.com will work with the manufacturer on your behalf if the product needs repairs. Please follow these steps:
- Contact us at cpap@cpap.com or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment
- Include a note with the product describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you
- Ship only the defective items to CPAP.com at 13235 N Promenade Blvd, Stafford, TX 77477
- Do not return accessory items such as the carry bag, hose or power cords
- Loaner Humidifiers are available for rental during the warranty process
- Email updates will be sent to keep you informed as the product moves through the warranty process
- CPAP.com will contact the manufacturer on your behalf and handle all shipping between us and the manufacturer
- The repaired or replaced unit will be returned to you. Shipping charges may apply.
Please Note: The manufacturer warranty is voided by water damage or misuse of the machine.
Videos
Are prescriptions required for mask, machine, humidifier, and EPAP purchases?
Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine, humidifier, or EPAP therapy, including Provent and Bongo RX. You will also need a prescription to purchase the Nightbalance POSA device.
We provide many easy ways to get your prescription:
- We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
- Fax your prescription to our toll-free fax number: 866.353.2727, or our international fax number: 713.541.7377
- Email your prescription to cpap@cpap.com
- Upload your prescription in your account, under the Prescriptions Section
- Ask your doctor to fill out our prescription form. We have both a standard prescription form and an EPAP prescription form.
For more information on prescriptions, please see our Prescription Section of the Learning Center.
What are the benefits of using a humidifier?
Many CPAP users experience nasal congestion and dryness of the nose and throat during treatment. This can be especially problematic for new users who are adapting to treatment. Humidification adds moisture to the air helping to reduce the symptoms of dryness and congestion.
Nasal congestion also leads to mouth breathing, which perpetuates the problem of dryness. If this is an issue for you, try a heated humidifier.
Nasal congestion also leads to mouth breathing, which perpetuates the problem of dryness. If this is an issue for you, try a heated humidifier.
What is a heated humidifier?
A heated humidifier uses heat to warm the water to add moisture to the airstream. The heat is adjustable for more or less moisture. A heated humidifier water chamber is much smaller than a passover humidifier water chamber.
In our experience, it is common for CPAP users to report that their therapy is greatly enhanced by the use of a heated humidifier.
There are three types of heated humidifiers:
In our experience, it is common for CPAP users to report that their therapy is greatly enhanced by the use of a heated humidifier.
There are three types of heated humidifiers:
- Stand Alone Humidifiers
Stand Alone Humidifiers can be used with almost any machine as long as an integrated humidifier is not being used and the machine does NOT have a built in humidifier. The Fisher & Paykel HC150 Heated Humidifier With Hose, 2 Chambers and Stand is a stand alone heated humidifier that includes ambient tracking to keep the humidity consistent independent of room temperature.
- Integrated Humidifiers
Integrated Humidifiers connect directly to the machine the humidifier was made to be used with. This provides the convenience of being able to remove the humidifier from the machine for traveling or other purposes. Here are some of the integrated humidifiers we carry:
PR System One 60 Series Heated Tube Humidifier with Heated Tube
Transcend Heated Humidifier
XT Heated Humidifier
- Built In Humidifiers
Built In Humidifiers are permanently affixed to their machine and cannot be removed. The chamber can still be removed for cleaning, however the heating element is a part of the machine. The advantage of built in humidifiers is they generally take up less space than a machine with an integrated or stand alone humidifier. Here are some machines that have a built in humidifier:
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
ICON Auto CPAP Machine with Built-In Heated Humidifier and ThermoSmart Heated Hose
iCH Auto CPAP Machine with PVA and Built-In Heated Humidifier
+ See More
What is a passover humidifier?
A passover humidifier uses a chamber of room temperature water with the CPAP to add moisture to the airflow and reduce irritation to the nasal passages.
Air flows from the CPAP through a short hose to the humidifier chamber where the air "passes over" the water to pick up whatever moisture it can. The air then flows into the six foot hose to the mask.
Passover humidifiers may provide sufficient moisture with CPAPs set at lower-end pressures. However, if the moisture is not sufficient there is no way to increase the amount of moisture added. The water is room temperature. In cold climates, the water temperature will drop causing the CPAP air to become very cold, and causing the amount of moisture to be reduced.
Air flows from the CPAP through a short hose to the humidifier chamber where the air "passes over" the water to pick up whatever moisture it can. The air then flows into the six foot hose to the mask.
Passover humidifiers may provide sufficient moisture with CPAPs set at lower-end pressures. However, if the moisture is not sufficient there is no way to increase the amount of moisture added. The water is room temperature. In cold climates, the water temperature will drop causing the CPAP air to become very cold, and causing the amount of moisture to be reduced.
What is an integrated humidifier?
An integrated humidifier is used with a specific CPAP and fits directly onto the machine. For most heated humidifiers, this design eliminates the need for a second hose as well as a second power cord.
An advantage of an integrated humidifier is that it works very closely with the CPAP machine to deliver humidification. Also, an integrated humidifier is a compact unit that uses fewer parts to provide moisture to the user.
A disadvantage of the integrated humidifier is the user will receive less moisture when it is used with a passover humidifier. The smaller surface area effects the amount of moisture produced. Also, a integrated humidifier will only function with the CPAP for which it was designed.
You can see if your machine has an integrated humidifier option by reviewing our Compare Charts.
An example of an integrated humidifier is the PR System One Heated Humidifier as seen below attached to a machine in the PR System One line.
Here are some of the integrated humidifiers we carry:
DreamStation Heated Humidifier
Transcend Heated Humidifier
IntelliPAP 2 Heated Humidifier with Pulse Dose Humidification
PR System One 60 Series Heated Tube Humidifier with Heated Tube
An advantage of an integrated humidifier is that it works very closely with the CPAP machine to deliver humidification. Also, an integrated humidifier is a compact unit that uses fewer parts to provide moisture to the user.
A disadvantage of the integrated humidifier is the user will receive less moisture when it is used with a passover humidifier. The smaller surface area effects the amount of moisture produced. Also, a integrated humidifier will only function with the CPAP for which it was designed.
You can see if your machine has an integrated humidifier option by reviewing our Compare Charts.
An example of an integrated humidifier is the PR System One Heated Humidifier as seen below attached to a machine in the PR System One line.
Here are some of the integrated humidifiers we carry:
DreamStation Heated Humidifier
Transcend Heated Humidifier
IntelliPAP 2 Heated Humidifier with Pulse Dose Humidification
PR System One 60 Series Heated Tube Humidifier with Heated Tube
What is a built in humidifier?
A "built in" humidifier is designed as a part of the CPAP machine and cannot be removed or separated from the CPAP machine. As with an integrated humidifier, the design eliminates the need for a second hose or power cord. The water chamber can be removed for cleaning or replacement purposes.
The advantage of a "built-in" humidifier is its compact shape, which operates on fewer parts. This integrated design helps to ensure optimum moisturized comfort and effectiveness when CPAP therapy and humidification are used together. Also, it allows an option for the humidification to be turned off while the CPAP is blowing.
A disadvantage is that a built in humidifier may produce less moisture if used as passover because the surface area is typically smaller. Also, since the humidifier is "built in" to the machine, detaching it is not an option. This can be an issue for frequent travelers. Lastly, if the machine or humidifier stops working, the entire unit must be sent in for repair or replacement, not just the component that failed.
An example of a machine with a built in humidifier is the ICON Auto CPAP Machine with Built In Heated Humidifier and SensAwake as seen below.
Here are some other machines we carry with built-in humidifiers:
AirSense™ 10 CPAP Machine with HumidAir™ Heated Humidifier
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
iCH Auto CPAP Machine with PVA and Built-In Heated Humidifier
+ See More
The advantage of a "built-in" humidifier is its compact shape, which operates on fewer parts. This integrated design helps to ensure optimum moisturized comfort and effectiveness when CPAP therapy and humidification are used together. Also, it allows an option for the humidification to be turned off while the CPAP is blowing.
A disadvantage is that a built in humidifier may produce less moisture if used as passover because the surface area is typically smaller. Also, since the humidifier is "built in" to the machine, detaching it is not an option. This can be an issue for frequent travelers. Lastly, if the machine or humidifier stops working, the entire unit must be sent in for repair or replacement, not just the component that failed.
An example of a machine with a built in humidifier is the ICON Auto CPAP Machine with Built In Heated Humidifier and SensAwake as seen below.
Here are some other machines we carry with built-in humidifiers:
AirSense™ 10 CPAP Machine with HumidAir™ Heated Humidifier
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
iCH Auto CPAP Machine with PVA and Built-In Heated Humidifier
+ See More
What is a stand alone humidifier?
A stand alone humidifier is a component that will work with any CPAP and does not attach directly to the machine. It has its own power cord and a short hose to connect it to the CPAP. Generally it will sit next to the CPAP machine and is slightly larger than an integrated humidifier.
The advantage of a stand alone humidifier is the fact that it may be used with any CPAP machine.
The main disadvantages are that the size is often larger than either a "built in" or integrated humidifier and that a short hose is needed to connect it to the CPAP machine.
An example of a stand alone humidifier is the Fisher & Paykel HC150 Heated Humidifier as seen below.
The advantage of a stand alone humidifier is the fact that it may be used with any CPAP machine.
The main disadvantages are that the size is often larger than either a "built in" or integrated humidifier and that a short hose is needed to connect it to the CPAP machine.
An example of a stand alone humidifier is the Fisher & Paykel HC150 Heated Humidifier as seen below.
How do I care for my humidifier?
To care for your humidifier simply empty and clean the water tank each morning. Only distilled water should be used in the humidifier to avoid mineral deposit build up. 
Here are some items that can help with caring for your humidifier:
CleanSmart CPAP Disinfectant Spray
Control III Disinfectant CPAP Cleaning Solution - 16 oz Concentrate
Control III Disinfectant CPAP Cleaning Solution - Home Care Kit
What does a humidifier prescription need to say?
A humidifier prescription must contain all of the following information:
Here are some of our top selling humidifiers:
PR System One 60 Series Heated Tube Humidifier with Heated Tube
Transcend Heated Humidifier
XT Heated Humidifier
+ See More
- One of the following words or phrases: "CPAP Humidifier", "Humidifier", "HH", "CPAP Supplies", "CPAP Mask", "CPAP", "Continuous Positive Airway Pressure", "APAP", "AutoPAP", "AutoSet", "Auto CPAP", "Auto Adjusting CPAP", "Self Adjusting CPAP", "BiPAP", "BiLevel", "VPAP", "BiPAP Auto", "BiPAP ST", "Synchrony ST", "VPAP ST"
- Your physician's contact information
- Your physician's signature
- The patient's full name
Here are some of our top selling humidifiers:
PR System One 60 Series Heated Tube Humidifier with Heated Tube
Transcend Heated Humidifier
XT Heated Humidifier
+ See More
Overall Rating 5.0
Larger Capacity
Verified Customer3/01/2011
Verified Customer
Verified purchase
Easier than descaling
Got this replacement/upgrade version of the reservoir to replace my old one that has gotten cruddy. Even though the base is a different shape (oval vs round) it fit fine in the unit and is held solidly in place by the frame that comes in the kit. more...
Verified Customer
Verified purchase
Perfect!
After weeks of trying to fix a leaking water chamber and no luck getting the right one through the firm that handles my supplies, I got this one (water chamber plus cover) from CPAP.com. It took a few seconds (literally) to install the new cover, everything fits perfectly, and I don't have to clean up any more leaks. Fantastic! more...
Verified Customer
Verified purchase
Mitch
Great price fast shipping.
Verified Customer
Verified purchase
Prefect
Great product and price. Quick shipping no problems at all . would refer to family or friend and would order from cpap again. Thanks more...
Verified Customer
Verified purchase
CPAP heater 3i upgrade
Clipped on easily works great
1 - 5 of 146 Reviews
Show 20 More Reviews
$36.00
People also viewed:
Take 15% off your order of $200+ by subscribing!
Assistance & Resources
CPAP.com is a family owned and operated business dedicated to providing Sleep Apnea equipment to those who need sleep therapy.
Contact Us
Phone: 1-800-356-5221
Fax: 1-866-353-2727
Email: cpap@cpap.com
Address: 13235 N Promenade Blvd, Stafford, TX 77477
Copyright © 1999-2021 US Expediters, Inc. All Rights Reserved.
Site Map User Agreement Privacy Policy PHI Policy About Ads Medicare Notice CCPA Notice Returns Policy
Site Map User Agreement Privacy Policy PHI Policy About Ads Medicare Notice CCPA Notice Returns Policy
While you may find the information provided on this site helpful, please understand that it is not in any way intended to replace the advice of a physician or medical professional. If you're concerned about your health or worried about specific symptoms, please consult a doctor. If you have additional questions about our site, please consult our User Agreement for more information.
