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SleepStyle 604 Thermosmart CPAP Machine with Built In Heated Humidifier
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This item has been discontinued by the manufacturer.
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Item # HC604jhu
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SleepStyle 604 Thermosmart CPAP Machine
The SleepStyle 604 with Thermosmart is the most advanced, high end humidification system in the world. The HC604 uses patented heated coil tubing to eliminate rainout and will automatically adjust to deliver the exact amount of humidification you need as you sleep.
SleepStyle 604 Thermosmart CPAP Machine
The SleepStyle 604 with Thermosmart is the most advanced, high end humidification system in the world. The HC604 uses patented heated coil tubing to eliminate rainout and will automatically adjust to deliver the exact amount of humidification you need as you sleep.
Learn More About Your New Machine
What does CPAP therapy do?
CPAP therapy provides a constant airflow which holds the airway open so that uninterrupted breathing is maintained during sleep. It is traditionally provided through a nasal mask that seals around the nose to maintain the pressure level.
Which CPAP masks work on which machines?
Any mask will work with any machine, with one important exception. The ResMed AirMini is only compatible with certain ResMed CPAP masks. Compatible masks for the AirMini are as follows:
- ResMed AirFit™ N20 Nasal Mask
- ResMed AirFit™ F20 Full Face
- ResMed AirTouch™ F20 Full Face
- ResMed AirFit™ P10 Nasal Pillow
When considering another CPAP, APAP or BiPAP machine from ResMed or any other manufacturer, mask compatibility extends to all brands. The AirMini uses non-standard tubing to connect the machine to the mask, and is the primary reason why other masks won't work with the AirMini. Despite this issue, many of our customers consider the AirMini to be an excellent machine.
How do I choose the machine that is right for me?
We provide our customers with many tools to make informed decisions about their machine purchases. Options include:
- Calling a CPAP Expert Toll Free. 800.356.5221.
- Comparison Charts. These charts compare available machines, feature by feature. If you don't know the meaning of a feature, click on the question mark for a definition. Click on the image or name of the product for more detailed product information, pictures and resources.
Travel CPAP Comparison Chart
APAP Comparison Chart
BiPAP Comparison Chart
- Browse Our Machine Product Categories. These categories show each machine our company offers, ranked by popularity. Popularity is determined by a mix of sales data and our in house opinion of the quality of the machine based on our experience and customer feedback. The best products float to the top of our categories.
CPAP Machine Category
APAP (Auto Adjusting) Machine Category
BiPAP (Two Pressure) Machine Category
How can I compare different machines?
We work very hard to provide many different ways for our customers to compare products. Here are the machine product guides we have created and maintain:
- CPAP Machine Comparison Guide. This guide stacks up every CPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular CPAPs, or all CPAP machines we sell.
Compare Most Popular CPAP Machines
Compare All CPAP Machines
- Auto Adjusting Machine (APAP) Comparison Guide. This guide stacks up every APAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular APAPs, or all APAP machines we sell.
Compare Most Popular APAP Machines
Compare All APAP Machines
- BiPAP, VPAP and BiLevel Comparison Guide. This guide stacks up every BiPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular BiPAPs, or all BiPAP machines we sell.
Compare Most Popular BiPAP Machines
Compare All BiPAP Machines
What comes with my machine?
Machines come with a six foot hose, power cord, at least one filter, and manuals. Most manufacturers include a carrying case which is designed specifically for their equipment. CPAP, APAP, and BiPAP machines do not come with a delivery system or mask. CPAP masks must be purchased separately.
To see the list of what specifically comes with each machine, you can Browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.
To see the list of what specifically comes with each machine, you can Browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.
Do all CPAPs use filters?
Yes, all CPAPs use at least one filter that is usually a type of foam material and washable. Some CPAPs offer finer filtration with the addition of a disposable paper filter.
Cleaning and changing filters is the only maintenance required for a CPAP machine.
The filters are located at the back of the machine at the air intake.
Cleaning and changing filters is the only maintenance required for a CPAP machine.
The filters are located at the back of the machine at the air intake.
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 ramp?
The ramp button on a machine is a feature that allows for a gradual pressure build-up to your prescribed pressure. The feature is enjoyed by those with high pressures because it eases up to their pressure.
What is exhalation relief?
Exhalation relief is a comfort feature which reduces the air flow at the time of exhalation, making the breathing process more natural.
The following are the different types of exhalation relief names by manufacturer.
Here are some machines with an exhalation relief feature:
Transcend Auto miniCPAP™ Machine with EZEX
PR System One REMStar 60 Series Auto with Bluetooth
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
+ See More
The following are the different types of exhalation relief names by manufacturer.
- Philips Respironics = C-Flex, C-Flex+, A-Flex and Bi-Flex
- Resmed = EPR (Expiratory Pressure Relief)
- 3B Medical = RESlex
- Apex Medical = PVA (Pressure Variation Algorithm) Pressure Relief
- Curative Medical = EUT (Expiratory Unloading Technology)
- DeVilbiss = SmartFlex
- Fisher & Paykel = SensAwake Technology
- Human Design Medical = Z-Breathe
- Somnetics = EZEX
Here are some machines with an exhalation relief feature:
Transcend Auto miniCPAP™ Machine with EZEX
PR System One REMStar 60 Series Auto with Bluetooth
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
+ See More
What maintenance is required on machines?
The only care a CPAP, APAP or BiPAP machine requires is to clean or change the filters at the air intake. This keeps the internal parts from accumulating dust. Fine paper filters should be changed out every 30 days, or when they appear soiled. Foam washable filters should be rinsed with clear running water once a week, allowed to air dry, and reinserted.
Here are some other suggested actions to care for your machine:
Here are some other suggested actions to care for your machine:
- Keep the area around your machine clean by removing any dust from the area to improve the air quality delivered to your machine and to you.
- Keep the air intake of the machine unblocked. Curtains, bedding, and papers can easily block the air intake of your machine, reducing the airflow.
- If a humidifier is used with your therapy, do not pick up the machine with the humidifier attached. With most machines it is easy to spill water from the humidifier chamber into the machine causing damage. Manufacturer warranties are voided by water damage to the machine. To avoid this, remove the chamber from the humidifier and then remove the humidifier from the machine rather than transporting them together.
- If a humidifier is used, empty the water from the chamber every morning. Accidents happen. If a family pet or family member moves the machine and humidifier with water in the chamber it is more likely that water could be spilled into your machine. Water damage to a machine voids the manufacturer warranty.
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"Super helpful, fast shipping, friendly assistance, great selection, I love this company."
- Verified Customer, 10/25/22
★★★★★
(18)
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Warranty
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Sound Level
30-dB
26.6 dBA
26.6 dBA
Quiet
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Yes
Yes
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Customer Reviews
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Overall Rating
★★★★★
4.8 18 Reviews 5 Stars
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★★★★★
Verified purchase | May. 04, 2012 | Verified CPAP.com Customer
This machine was an excellant choice. The only down side is the water chambers. They can not be disassembled for a propery cleaning. I'd reccomend the upgraded chamber, but you'd probably have to call that in when ordering.
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★★★★★
Sleep Style 604 CPAP Machine
Verified purchase | Mar. 11, 2011 | Verified CPAP.com Customer
The machine itself is an excellent choice. It is quiet and easy to set up. The only comment I have is: I have troouble removing the resevoir on the front. It is kind of hard to remove, but to put it in is a breeze. The funnel makes it easy to refill.
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★★★★★
SleepStyle 604
Verified purchase | Feb. 03, 2011 | Verified CPAP.com Customer
Excellent. I have one that I travel with and this one is for home. I have had the airlines lose my original one for several days at a time, so I bought this one to keep at home. Thanks for your help.
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★★★★★
Verified purchase | Feb. 04, 2010 | Verified CPAP.com Customer
Machine is quite good and completely eliminated the gurgling hose. It would be nice if instructions more clearly identified humidifier setting and hose heat controls. For improvement I would like to see more humidifier capacity and a lower hose temp setting available. Filling integral reservoir is a pain. I would like to see a fill spout I could insert a funnel in without removing the reservoir from the machine.
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★★★★★
Verified purchase | Jan. 05, 2010 | Verified CPAP.com Customer
This SleepStyle 604 is my second Pisher & Paykel CPAP. My SleepStyle 200 has worked beautifully for five years and it will be my travel CPAP. I upgraded to the heated hose and ThermoSmart humidifier to eliminate the annoyance of rain out. Hopefully, I will not be awakened a few times nightly to empty the condensed water from the hose on humid nights. I did not get the SleepStyle 608 with automatic altitude adjustment since my home CPAP will remain at sea level.
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★★★★★
Sleep Style 604
Verified purchase | Nov. 01, 2009 | Verified CPAP.com Customer
Very good result
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