Top Reviews

"I really like this unit. It is simple, small and very effective. I have slept four straight nights perfectly for the first time in months."

November 11, 2006

"My husband says the humidifier is great. a nice warm moist air is making his nose feel much better."

November 20, 2006

Product Overview

The Fisher & Paykel HC150 Heated Humidifier With Hose, 2 Chambers and Stand is a versatile, stand alone heated humidification kit which may be used with most any CPAP or BiPAP machines. The Ambient Tracking feature adjusts to changes in room temperature to reduce rainout while delivering humidification.

Manufactured by Fisher & Paykel.

Product Features

Fisher & Paykel, the company that first developed heated humidifiers specifically designed for CPAP therapy, offers the HC150 Heated Humidifier With Hose, 2 Chambers and Stand. The HC150 is rugged, reliable, small and lightweight.

Fisher & Paykel HC150 includes Ambient Tracking which allows the humidifier to consider the room temperature when delivering moisture to the air stream. During the night, room temperatures often drop. When this occurs, condensation and water droplets may form in the six foot hose. This accumulation of water in the hose is called rainout. The Ambient Tracking feature reduces the formation of rainout making therapy more comfortable.

The HC150 can be used with most any CPAP or BiPAP machine as long as an integrated humidifier is not used and if the machine does NOT have a built in humidifier. See the Important Tips tab of this page for other compatibility statements.

Return On Warranty Issues Only


This Product Includes...

  • Humidifier Base
  • 2 Chambers
  • Power Cord
  • Stand
  • 18" Humidifier Hose

Product Specifications

Operating Voltage:115v

Operating Temperature: 30°C to 65°C (86°F to 149°F)

Dimensions: 2.1in L X 5.2in W X 5.7in H (5.4cm L X 13.2cm W X 14.6cm H)

Weight: 1.5 lbs. (0.7 kg)

Water Capacity: 400ml

Heater Settings: 1 to 4

Included Hose Length: 24 inches

Manufacturer Suggested Care & Cleaning: Wash chamber daily with dish soap, rinse well, allow to air dry.

Electrical Supply Frequency: 50-60 Hz

DC to AC Inverter Use: 150W Minimum

Type of Protection Against Electric Shock: Class II Type B

Degree of Protection Against water: IPX1 - Drip Proof

Warranty Length:

  • Heated Humidifier - 1 Year
  • Water Chamber - 90 Days always offers these services:

  • 8 am to 8 pm CST Toll Free Phone and Email Support
  • 24 hour access to our Support Forum
  • Learning Center for information on sleep apnea and cpap equipment
  • Consumer Purchasing Trends Reports
  • Warranty Services for all items purchased through
  • Insurance Compliant Invoices
  • Free Prescription Request System

Important Tips

110 Volt Operation:

This version of the HC150 is for operation with 110 volt system as is found in the United States. It cannot be used with 220 volt power.

Water & Capacity:

The HC150 holds 400ml of water. Do NOT fill the chamber past the Max Fill Line. The manufacturer recommends using only distilled water in the humidifier chamber. Do not use tap water. Discard any remaining water after each use.

Compatibility Comments:

Manufacturers do not test their Auto Adjusting Machines on the HC150, however it will work with most APAPs.

A few older machines used a sensor line to monitor pressure response.They are not compatible with the SC150. Examples of such machines: GoodKnight 420S and 420E CPAP machines.

The HC150 is not compatible with the Virtuoso LX machine as it does not have the technology to support an external humidifier.

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 top 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 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 1 Year Manufacturer Warranty. will work with the manufacturer on your behalf if the product needs repairs. Please follow these steps:

  • Contact us at 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 at 10101 Stafford Centre Drive, 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
  • 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.

CPAP Video & FAQ

Frequently Asked Questions (FAQs)

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.
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:

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.
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. PR System One Heated Humidifier

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. ICON Auto CPAP Machine with Built In Heated Humidifier and SensAwake
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. HC150 Heated Humidifier
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:
  • 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.

Conventional Humidification
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. S9 Dishwasher Safe Humidifier Chamber

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

Hurricane CPAP Equipment Dryer

What does a humidifier prescription need to say?
A humidifier prescription must contain all of the following information:
  • 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
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
  • 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.

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.
What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?

E1399 is Miscellaneous and is used for other CPAP and Oxygen items.
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