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M Series Heated Humidifier Overview
The M Series Heated Humidifier is the integrated heated humidifier for use with any M Series machine by Philips Respironics. Heated humidifiers add comfort to therapy by adding heat and moisture to the otherwise cold, dry air.
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Important Tips
Replacement Parts
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The DC Compatible Heated Humidifier is also an ideal solution for CPAP users who need humidification, but enjoy outdoor activities or use a CPAP when AC power is not readily available. The DC Compatible Heated Humidifier, the Respironics DC Power adapter, and a large battery like the Respironics Battery Pack are all needed to power both your Heated Humidifier and CPAP machine for more than 4 hours.
This is the integrated heated humidifier that works with any Respironics M Series CPAP, APAP, or BiPap Machines.
Includes only the humidifier, CPAP pictures for demonstration only.
This unit holds 1 2/3 cups of water.
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.
- 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 2 Year 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 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
- 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.
Nasal congestion also leads to mouth breathing, which perpetuates the problem of dryness. If this is an issue for you, try a heated humidifier.
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
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.
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
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 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 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.
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
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.
- 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
I use this humidifier in cool mist mode about 90% of the time. Keeps nasal passages just right in... comfort without drying out. If I ever need some warm mist I simply adjust the dial. Really makes the whole CPAP usage very comfortable. Couldn't imagine using my machine without it. more...
it has been a perfect addition to my cpap machine
Just a good as the original one.
Exactly what I was expecting thank you
I received fast service from this company and the humidifier works as described and expected! My other one quit... after a couple of years more...
This humidifier works beautifully. I bought it to replace my old unit that had stopped working after many years. I... replaced the old unit with the new my self by following the instructions, which were clear and easy to understand. more...
Works great, now have humid air for my backup CPAP.. No connections at all.. THANKS for a great product..
PROS - Holds a relatively large reservoir. Easy to fill, easy to clean. Nice seal
this purchase replace the heated humidifier due to the water tank leaked shorted out the unit. 8 years old. New 1... is working perfect. more...
was able to use BPAP Monday nite for the first time. No problem changing the parts, everything works great and... I was able to start sleeping again. Thanks for fast and efficient service. Everyone I talked with was very helpful especially Lori who processed my order. Will recommend your Company to anyone who needs help as I did. more...
My old m series humidifier had 2 power cords. The new one only needs one power cord. I was able to Open... the old power pack and disconnect the extra Cord so all is ok. Otherwise I was completely satisfied With the product and service. more...
Hi, for almost 19 years I have used my CPAP without a humidifier. Know my pneumologist recommended to use one... in order to help my cronic obstructive bronchial desease. The humidifier really seems to help, as my nose doesn´t feel dry anymore in the morning and I feel I can breathe easier during the day. The humidifier is very easy to handle, the adaption to the CPAP is done in 1 Minute. more...