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Category: CPAP Humidifiers > Heated Humidifiers > Machine Specific
PR System One Heated Humidifier
Our Price: $230.00
This product ships for FREE! Shipping Policy
Rated 4.5 out of 5 by 11 cpap.com customers. Read reviews.
Part Number F55D-1056209: 312 currently in stock
Prescription Required
We can request your prescription for you.
Key Product Information

    Manufacturer: Philips Respironics

    Rain-out and water damage are large contributors to machine failures. The PR System One humidifier and water chamber are breakthroughs in delivering consistent humidity without compromising water management. System One and Dry Box Technology make it possible for the PR CPAP machines to be virtually spill-free. This humidifier can be tilted, shaken, or turned upside down without water leaking back into the device. Even with a chamber filled to the "Full" indicator line, this unit can be transported safely and reliably.

    System One Humidity Control

    System One Humidity Control Technology analyzes ambient temperature and patient airflow to reach relative humidity at the mask. This prevents rain-out from occurring inside the CPAP tube. System One is the first solution in the industry that accounts for room humidity. Sensors inside and outside the CPAP machine closely monitor changes in humidity and prevents condensation from forming inside the tube.

    Dry Box

    Several unique designs are incorporated into the humidifier to prevent water from exiting the chamber. To start, Dry Box acts as a reservoir for any water ingress between the machine and humidifier. Also, the air outlet port has been moved from the side of the humidifier onto the top. This centers the entire delivery; minimizing the total water displacement around the hole. The water chamber is outfitted with a one-way valve, between the machine and the humidifier. In the event that the unit is moved, water that manages to escape the chamber gets trapped within the Dry Box.



    Returns Offered on Warranty Issues Only

respironics pr system one heated humidifier open
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CPAP.com Comments
A prescription is required to buy this product. You may fax it to us at 1.866.353.2727 or 1.713.541.7370. If you are purchasing a CPAP, BiPAP or APAP machine, please make sure the pressure setting is indicated.
User Reviews

January 26, 2010

(5 out of 5) by Rocky M, CO

"Water tank does not spill!"


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Great Unit   January 20, 2010

(5 out of 5) by Erik G, Washington, DC

"First of all I must say the folks are GREAT at CPAP.com. Every question I had was answered quickly and pleasently. I bought this unit a travel unit. I have the the same system at home and could not be more pleased!"


2 of 2 found the review helpful.
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January 05, 2010

(5 out of 5) by James F, Sherman, TX

"Nice Response on the warm air. My old unit took forever to heat up."


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works well   December 18, 2009

(4 out of 5) by joseph

"Very happy with the humidifier. Easy to fill and lasts all night. Only negative is it seems to require a setting of 5 to equal the same humidity I was receiving from my H2 himidifier on a setting of 2."


1 of 1 found the review helpful.
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November 02, 2009

(5 out of 5) by Kirstin

"After a few months with this humidifier I can say catagorically that it does what it is designed to. Through warm and cold nights (few nights below freezing in Canada) I haven't experienced any rainout. None! Say goodbye to cold water up the nose with this humidifier! Also, the water chamber is easy to remove and fill.

The only downside is that I would like to see an additional option for a less-than-smart humidifier for the PR System One AutoPap. In the winter I like my bedroom cool and my air moist, probably more than most, and I can't have both with the System One. So far I have placed a heater near the humdifier to raise the air temperature enough to get the air moist enough for me, but that means the room is a little warmer than I would like. A dumbed down version to enable by-passing the rainout prevention feature in winter (with a heated hose of course) would make this machine absolutely perfect."


4 of 5 found the review helpful.
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Product Specifications
Temperature Operating 41° F to 95° F
(5° C to 35° C)
Temperature Storage -4° F to 140° F
(-20° C to 60° C)
Relative Humidity 15 to 95% (non-condensing)
Atmospheric Pressure Operating 77 to 101 kPa
(0 - 7500 ft.)
Atmospheric Pressure Storage N/A
Dimensions: 8.25 in. L x 8.75 in. W x 4.0 in. H
(21 x 21.9 x 10.3 cm)
Weight (with water tank empty): Approximately 1.2 lbs (< 1kg)
Water Capacity 1 1/3 cups (325 ml) at recommended water level
Standards Compliance This humidifier is designed to conform to the following standards:
IEC 60601-1 General Requirements for Safety of Medical Electrical Equipment
EN ISO 17510-1 Sleep Apnea Breathing Therapy Devices
AC Power Consumption: 100 – 240 VAC, 50/60 Hz, 1.7 A max.
Type of Protection Against Electric Shock: Class II Equipment
Degree of Protection Against Electric Shock: Type BF Applied Part
Equipment Type: IPX1: Drip Proof Equipment
EMC Operation: Continuous
Electromagnetic Compatibility: The device meets the requirements of EN 60601-1-2, 2nd edition.
Heater Settings 1 to 5 (104° to 158° F / 40° to 70° C)
System One
Relative Humidity:

Setting 1 = 80-90%
Setting 2 = 70-80%
Setting 3 = 60-70%
Setting 4 = 50-60%
Setting 5 = 40-50%
Pressure Drop with Humidifier: (max.) 0.3cm H2O at 60 LPM flow
Humidity Range: 10 to 40 mg H2O/l
LED Type: Type 1 per IEC 60825-1
Disposal When necessary, dispose of the humidifier in accordance with local regulations.
Product Images
respironics pr system one heated humidifier inside view respironics pri series auto cpap w hh separated respironics pri series heated humidifier water chamber out
respironics pri series auto cpap w hh front respironics pri series heated humidifier water chamber side respironics pri series heated humidifier water chamber top
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  • The "Full Support MSRP" of this product is $449.00
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