$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 /
- Heated Humidifiers /
- ResMed
HumidAire 3i™ Heated Humidifier
BY ResMed Item #33906
79 Reviews
Sorry, this item is no longer available.
Check out the newer model here
HumidAire H4i™ Heated Humidifier Need replacement parts & accessories? Shop Now
Humidaire 3i™ Heated Humidifier Overview
The HumidAire 3i™ Heated Humidifier from ResMed is intended for use with S8 Series CPAP Machines. Those suffering from dryness and congestion may find relief in the warm air. The HumidAire 3i™ is no longer manufactured or sold by ResMed in the United States.
ResMed's HumidAire 3i™ Heated Humidifier directly connects to the S8 series CPAP Machine to transfer warm air from the water chamber to the user. Ease and efficiency were considered throughout the integrated design.
Features
- Easy to Use
- Efficient Design
Easy to Use
The HumidAire 3i™ has a flip top lid, which allows the user to fill the water chamber without removing the tubing.
The dial on the H3i™ allows the user to easily control their machine. With use of the dial, the user does not even need lights to correctly identify actions. The touch of the dial impacts the user by providing warm air from the water chamber to the mask. This warm air may help relieve problems with dryness, nose and mouth irritation, and even congestion.
Efficient Design
Intended for use with the ResMed S8 Series CPAP Machines, the H3i™ does not require additional outlets or power supplies. The integrated unit snaps together to create one piece, allowing the machine and the humidifier to operate on the same power supply. Being that the humidifier and machine connect to become one device, the footprint is minimal. In fact, the unit is both unobtrusive on the nightstand and easy to pack when traveling.
The water chamber holds 385 mL of liquid, which is a significant volume. The more water the device can hold directly impacts the number of refills needed each time the machine and humidifier are used. With a higher volume, the customer may focus less on refilling their device each time it is used.
This Product Includes...
- Humidifier
- Chamber
- Cleaning Plug
- Carry Pouch
Performance
- Maximum Heater Plate Temperature: 185 deg F (85 deg C)
- Temperature Cut-Out: 199 def F (93 def C)
- Maximum Output Humidity: 95% relative humidity (control dial set to maximum setting, flow rate 50 L/min, ambient temperature of 68 def F (20 deg C), ambient relative humidity of 40%)
Dimensions
- Chamber and Docking Station: 4.6" L x 6.7" W x 8.3" H (118 mm L x 164 mm W x 145 mm H)
Weight
- Docking Station and Unfilled Water Chamber: 670 g (1.5 lb)
Water Capacity
- Maximum Fill Line: 385 mL
Power Supply Input Range
- 100-240V, 50/60Hz; 110V, 400Hz; 2.5A < 140 VA (110 W) (maximum power consumption).
- Instantaneous peak power consumption <340 VA. Actual average power consumption will vary, depending on factors such as temperature setting, set pressure, the use of accessories, height above sea level and ambient temperature.
- Maximum heater element power: 85 W
Housing Construction
- Docking Station: Flame retardant engineering thermoplastic, plated cast aluminum.
- Water chamber: Injection molded plastic, stainless steel.
Environmental Conditions
- Operating Temperature: +41 deg F to +104 deg F
- Operating Humidity: 10-95% non-condensing
- Storage and Transport Temperature: -4 deg F to +140 deg F
- Storage and Transport Humidity: 10-95% non-condensing
IEC 60601-1 Classification
- Class II (double insulation)
- Type CF
Electromagnetic Compatibility
- Product complies with all applicable electromagnetic compatibility requirements (EMC) according to IEC60601-1-2, for residential commercial and light industry environments. *Consult the medical department of the carrier before using on aircraft.
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.
Power Tips
This humidifier cannot be run off 12 volt power. If a machine is powered by 12 volts, the heated humidifier will not run. If a CPAP is powered by 110 or 220 volts it will power the heated humidifier. A 110 volt inverter hooked to a 12 volt battery can be used to power a machine and this humidifier.
Compatibility Tips
This humidifier integrates with the full ResMed S8 and S8 II lines of CPAP and APAP Machines. The H3i is not compatible with:
- AirCurve 10 Series
- AirSense 10 Series
- S9 Series
- S7 Series
- VPAP III Series
- VPAP Auto 25
- VPAP ST
- VPAP IV
- VPAP Malibu
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 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.
What is rainout?
Rainout is the accumulation of water in a CPAP tube due to warm moist air cooling and condensing on its way from your CPAP machine to your CPAP mask.
The image below from Fisher & Paykel explains how rainout is formed. Warm, moist air leaves the heated humidifier and travels through the CPAP tube. As air flows through the tube, the temperature of the room causes the tube to cool. As the tube cools, the air inside releases its moisture, and creates condensation in the hose.
Solutions to rainout include:
The image below from Fisher & Paykel explains how rainout is formed. Warm, moist air leaves the heated humidifier and travels through the CPAP tube. As air flows through the tube, the temperature of the room causes the tube to cool. As the tube cools, the air inside releases its moisture, and creates condensation in the hose.
Solutions to rainout include:
- Raise the temperature of your bedroom.
- Keep your CPAP machine at the same level as your bed.
- Insulate your tubing with a hose cover like Snugglehose.
- Reduce the temperature setting on your heated humidifier.
- Purchase a CPAP machine with a rainout reduction comfort feature.
- Some machine systems offer a compatible heated CPAP hose which maintains the temperature from the machine all the way to the mask, reducing the occurrence of rainout. The list of available heated hoses can be found here: Hoses With Heating Coils.
- If your machines uses a standard hose, consider the Hybernite Heated Rainout Control System.
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
Why do I need to use distilled water with in my humidifier chamber?
Use distilled water to help keep the humidifier chamber clean and mineral deposit free. Tap water should not be used as it will leave hard white mineral deposits in the chamber as the water evaporates, or it may lead to mold growth. Cases of lung disease have been connected to using contaminated well water in a CPAP humidifier.* Source
If distilled water is not available where you live, use bottled water. It will be important to clean the chamber each morning, do not leave standing water in the chamber between uses.
If distilled water is not available where you live, use bottled water. It will be important to clean the chamber each morning, do not leave standing water in the chamber between uses.
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
What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?
- A7034 is Nasal Mask
- A7034 is Nasal Pillow Mask
- A7030 is Full Face Mask
- A7027 is Hybrid Mask
- A7044 is Oral Interface Mask (Oracle)
- A7035 is Headgear for Mask - Any Style
- A7036 is Chinstrap - Any Style
- A7032 is Replacement Nasal Mask Cushion
- A7033 is Replacement Nasal pillows
- A7031 is Replacement Full Face Mask Cushion
- A7028 is Replacement Hybrid Mask Cushion
- A7029 is Replacement Hybrid Mask Nasal Pillow
- A7046 is Replacement Humidifier Chamber
- A7037 is Tubing / Hose - Long & Short Tubes
- A4604 is Heated Tubing
- A7038 is Disposable Filter (White / Paper)
- A7039 is Washable Filter (Gross Particle / Foam/ Black)
- E0601 NU is CPAP Purchase
- E0601 NU is APAP Purchase
- E0470 NU is BiPAP Purchase
- E0470 NU is BiPAP Auto Purchase
- E0471 NU is BiPAP ST Purchase
- E0471 NU is BiPAP Auto SV Purchase
- E0562 NU is Heated CPAP Humidifier
- E0561 NU is Passover or Cool CPAP Humidifier
- E0601 RR is CPAP Rental
- E0601 NU is APAP Rental
- E0470 RR is BiPAP Rental
- E0470 RR is BiPAP Auto Rental
- E0471 RR is BiPAP ST Rental
- E0471 RR is BiPAP Auto SV Rental
- E1356 is Oxygen Concentrator Battery
- E1357 is Oxygen Concentrator Battery Charger
- E1358 is Oxygen Concentrator DC Cable
- E1390 is Portable Oxygen Concentrator
E1399 is Miscellaneous and is used for other CPAP and Oxygen items.
Overall Rating 4.6
Smaller is more!
Verified Customer6/20/2008
Verified Customer
Verified purchase
Large capacity, perfect accessory for Resmed S8 Auto PAP. Full control of the amount of humidity. Easy fill, positive seals. more...
10 people found this helpful.
Verified Customer
Verified purchase
very nice products
1 person found this helpful.
Verified Customer
Verified purchase
Good Integration Poor Maintenance
The unit was very easy to install and the power connection was internal so there wasn't a new wire to deal with. The resevoir tank is sealed so it is impossible to thoroughly clean the inside. It can be shaken but there is no way to reach all of the interior surface. I am worried that deposits or scum will build up that I can't remove. more...
19 people found this helpful.
Verified Customer
Verified purchase
H3i Humidifier
This unit is a lot better that the one that came with the S7. Easy to refill. Easy to clean. more...
6 people found this helpful.
Verified Customer
Verified purchase
Humidaire H3i humidifier
Works great as expected.
6 people found this helpful.
1 - 5 of 79 Reviews
Show 20 More Reviews
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.
