Water Chamber for H4i™ Heated Humidifier

Product Features

Return On Warranty Issues Only

Specifications

This Product Includes...

• Chamber

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Manufacturer Note:

• Some product images supplied by ResMed © ResMed 2010 Used with Permission
• ResMed products are for sale only to patients within the U.S. and not to other third parties or businesses.
• 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.

Important Tips

This chamber doe not include the lid or humidifier assembly.

Humidaire H3i Water Chambers are no longer available. H3i users must purchase this kit to use the H4i Water Chamber.

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Frequently Asked Questions (FAQs)

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.

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 the chamber between uses.

Are prescriptions required for mask, machine and/or humidifier purchases?

Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine and/or humidifier.

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: 1-866-353-2727, or our international fax number: 713-541-7370
• Email your prescription to cpap@cpap.com
• Upload your prescription in your account, under the prescriptions section

For more information on prescriptions, please see our Prescription Section of the Learning Center.

What are the CPAP, BiPAP and Sleep Apnea related billing codes?

• EO601 RR is CPAP Rental
• E0601 NU is CPAP Purchase
• A7034 is CPAP Mask
• A7032 is CPAP Nasal mask cushion
• A7033 is CPAP Nasal pillows
• A7030 is CPAP Full face mask
• A7031 is CPAP Full face mask cushion
• A7044 is CPAP Oral interface
• A7027 is CPAP Hybrid mask
• A7028 is CPAP Hybrid mask cushion
• A7029 is CPAP Hybrid mask nasal pillow
• A7046 is CPAP Humidifier chamber
• A7037 is CPAP Tubing, long and short hoses
• A4604 is CPAP Heated tubing
• A7038 is CPAP Disposable filter
• A7039 is CPAP Gross particle (foam) filter
• A7035 is CPAP Headgear
• A7036 is CPAP Chinstrap
• E0561 NU is CPAP Passover humidifier
• E0562 NU is CPAP Heated humidifier
• E0470 RR is BiPAP Rental
• E0470 NU is BiPAP Purchase
• E0471 RR is BiPAP-ST Rental
• E0471 NU is BiPAP-ST Purchase

Other CPAP items are listed under E1399, which is miscellaneous.

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. The water chamber for a heated humidifier is much smaller than a passover humidifier.

In our considerable experience of specializing in CPAP equipment we have found that patients who use a heated humidifier have a much higher rate of effectiveness to their CPAP therapy.

There are three types of heated humidifiers:

• Stand Alone Humidifiers
• Integrated Humidifiers
• Built In Humidifiers

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. Furthermore, because the water is room temperature, in cold climates the water temperature will drop causing the CPAP air to become very cold and the amount of moisture will be reduced

What is an integrated humidifier?

An integrated humidifier is used with a specific CPAP and fits directly onto the machine. This eliminates the need for a second hose, and with most heated humidifiers the need for a second power cord.

The advantages of an integrated humidifier are that it works very closely with the CPAP machine and is a compact unit that uses fewer parts.

A disadvantage is that if it is being used as a passover humidifier it will produce less moisture because the surface area is typically smaller. An integrated humidifier will function only 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.

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 integrted humidifier, it 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 it makes for a more compact unit with fewer parts. This design also helps to ensure therapy effectiveness by including the heated humidifier with the CPAP machine thereby providing comfort to the CPAP user.

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.

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 is used 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.

What is rainout?

Rainout is the accumulation of water in a CPAP tube due to warm moist air cooling and condensating 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 down the CPAP tube. As the air travels down the tube the room temperature can cool the tube and therefore cool the air traveling down the tube. As the air cools, it releases its moisture and condensation occurs, otherwise known as rainout.

Solutions to rainout include:

• Raising the temperature of your bedroom.
• Keep your CPAP machine at the same level as your bed.
• Insulating your tubing with a hose cover like Snugglehose.
• Reduce the tempurature setting on your heated humidifier.
• Purchasing 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 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 Rainout Control System.

What does a humidifier prescription need to say?

• Contains 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"
• Contains your physician's contact information
• Contains your physician's signature
• Contains the patient's full name

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