ThermoSmart Heated Breathing Tubes

If you use a Fisher & Paykel SleepStyle CPAP machine, the ThermoSmart heated tubing is what makes the difference between waking up with a dry, congested nose and sleeping through the night comfortably. This collection carries the genuine ThermoSmart heated breathing tube built to work with the humidification system inside compatible SleepStyle devices.

The Fisher & Paykel ThermoSmart Heated Breathing Tube (900HC522) is a 6-foot, 22 mm cuffed gray tube designed for the SleepStyle 600 Series CPAP. Its heated wire runs the full length of the hose, keeping the humidified air warm all the way from the humidifier chamber to your mask. That's the whole point of heated tubing: without it, warm moist air cools as it travels through an unheated hose, and the moisture condenses into water droplets — the "rainout" that pools in your tubing and mask and disrupts sleep.

Why the heated wire matters

ThermoSmart technology lets your machine deliver a higher, more consistent level of humidity because the tube maintains air temperature rather than losing it along the way. That means more effective relief from a dry mouth, nasal irritation, and morning congestion, and far less condensation to deal with. It also works well in colder bedrooms, where standard tubing is most prone to rainout.

When replacing your tube, confirm compatibility with your specific SleepStyle model before ordering — the 900HC522 is intended for the 600 Series and connects to the machine's heated-tube port, not a standard hose fitting. Most users replace CPAP tubing periodically as part of routine equipment maintenance to keep airflow clean and performance consistent.

For related supplies, browse our full CPAP Supplies selection, or explore CPAP Tubing and CPAP Masks to complete your therapy setup.

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Fisher & Paykel Thermosmart Heated Breathing Tube

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Fisher & Paykel Thermosmart Heated Breathing Tube

ThermoSmart Heated Breathing Tubes