CPAP tubing is the part of the system most people buy without thinking, and then wonder why the mask pulls, the hose gurgles, or the new tube does not fit the machine. This guide covers what has to match (connections and diameter), what is a comfort choice (heating, length, weight, colour), and which tube fits the machines we sell most. Where a product is named, the link goes to its page, and all CPAP tubing ships without a prescription.
The tube is the connection between your CPAP machine and your CPAP mask, so a poor match shows up every night: as air leaks at the cuffs, as a weight tugging the mask sideways, or as water collecting in the hose by morning. Getting two details right at the start, the connection and the diameter, avoids most of that. Everything else is a comfort upgrade you can add later from our CPAP supplies category.
What Has to Match: Connection and Diameter
These two factors decide whether a tube works with your equipment at all. Check them first.
Tube connections
Standard unheated tubing uses a soft cuff at each end that fits the air outlet on most machines and the elbow on most masks. Heated tubing is different. It carries a wire and an electrical connector that the machine powers and controls, so it only works with the machine series it was made for. ResMed’s ClimateLineAir for the AirSense 10 does not fit the AirSense 11, and the reverse is also true. If you own the machine already, check the model name on it before you order a heated hose. If you are buying a machine and tubing together, ask us to confirm the pair.
Tube diameter and length
Most CPAP tubing is 1.8 metres (6 feet) long. Standard tubing has an inner diameter of about 19 mm with a 22 mm cuff at each end. Slim tubing, which ResMed calls SlimLine and Philips sells as its 15 mm tube, has a 15 mm inner diameter and is lighter and more flexible. Newer machines such as the AirSense 10, AirSense 11, DreamStation and DreamStation 2 accept slim tubing, but the machine has to be told which tube is attached (a setting on the machine) so it can deliver the correct pressure. Older machines may not support slim tubing at all, and an adapter does not fix that. Check your manual or ask before switching diameters.
Length is a comfort choice. Longer tubes (2.4 m or 3 m) give slack if the machine sits across the room or you move a lot in your sleep; shorter tubes (1.2 m) save weight and pack smaller for travel. Longer tubes are mostly available in unheated versions from third-party makers, since manufacturer heated hoses come in 1.8 m only. Travel CPAP machines often use their own connector, so check whether an adapter exists before buying a different tube for one.
What Is a Comfort Choice: Heating, Weight and Colour
None of these stop a tube from working, but they decide how it feels at 3 a.m.
Heated tubing
A heated tube keeps the air warm from the humidifier to the mask. In a cool bedroom, warm moist air cools inside an unheated hose and condenses, which is the “rainout” that gurgles in the tube and spits water into the mask. Heating stops that, and on ResMed and Philips machines it also turns on automatic climate control, where the machine adjusts humidifier and tube temperature together as the room changes. Our guide to CPAP humidifiers covers the settings side.
The trade-off is choice. You are limited to the heated tube made for your machine series, in one length. For the two ResMed machines most of our customers own, that is the ClimateLineAir 11 heated tubing for the AirSense 11 and AirCurve 11, and the ClimateLineAir heated tubing for the AirSense 10. Both are 15 mm tubes with a swivel at the machine end.
If you would rather keep a standard tube, a fleece hose cover insulates the hose and cuts rainout for much less, and it fits most lengths and both diameters. Alberta Health Services lists tubing covers among the accessories that affect the price of a CPAP package in its buyer’s information for CPAP therapy equipment, which is a useful read before any accessory purchase.
Weight and materials
A heavy or slack tube pulls on the mask, which matters most with a small nasal pillow mask. Slim 15 mm tubing is the simplest fix: it is lighter than standard tubing without being flimsier, as long as your machine supports it. Among standard tubes, the very lightest third-party options sometimes get there with thinner walls that crack sooner, so stick with the manufacturer’s own tube or a brand we stock. For an unheated standard tube that fits most machines, the Philips Respironics standard 6 ft CPAP tubing is a 15 mm tube made for the DreamStation line that also connects to any machine and mask that accept 15 mm tubing.
Colour and appearance
Most tubing is clear or translucent with a reinforcing coil, and that is a practical choice: you can see build-up, debris and cracks through the wall. Coloured or opaque tubes are available if you want to tell two tubes apart or match the bedroom, but they hide what is inside. If you choose one, clean it on the schedule in our cleaning and maintenance guide and replace it on time rather than by eye.
When to Replace CPAP Tubing
Manufacturers and most Canadian extended health plans work from a 6 to 12 month replacement interval for tubing. Those intervals come from manufacturer and insurer practice rather than clinical trials, which is why your own manual is the final word for your equipment. Replace sooner if the ribs crack, the cuffs no longer grip, the tube holds a kink, or it smells after cleaning. A heated tube with a damaged wire should be replaced, never repaired. Replacement intervals for the rest of the system are on our CPAP supplies page, and the parts of a CPAP machine guide explains what each one does.
Need a new hose?
The tubes that fit the machines we sell most. No prescription required, and orders over $150 ship free across Canada.
Different machine? Browse all CPAP tubing or the full CPAP supplies and replacement parts hub.
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Sign Up Free →Frequently Asked Questions
Does CPAP tubing fit all machines?
Standard unheated tubing with 22 mm cuffs fits most machines and masks. Slim 15 mm tubing fits machines that support it and need a settings change. Heated tubing fits only the machine series it was made for.
Do I need a prescription to buy CPAP tubing in Canada?
No. The prescription requirement applies to the machine only. Tubing, masks, filters and chambers ship without one.
Is heated tubing worth it?
If you use a humidifier and wake to water in the hose, yes. It removes rainout and lets the machine manage humidity and temperature together. If dryness and condensation are not problems for you, a standard tube is fine.
Can I use AirSense 10 heated tubing on an AirSense 11?
No. The connectors and the heating control are different between the two series. The AirSense 11 uses the ClimateLineAir 11; the AirSense 10 uses the ClimateLineAir for AirSense 10. Standard unheated tubing works on both.
How often should CPAP tubing be replaced?
Every 6 to 12 months under normal use, or sooner if it cracks, loses its grip at the cuffs, or smells after cleaning. Most Canadian extended health plans fund replacement tubing on that schedule.
Final Thoughts on Choosing CPAP Tubing
Match the connector and the diameter to your machine, then decide whether heating is worth it for you. Most people with a humidified machine find that it is. The rest, length, weight and colour, you can change any time without affecting therapy.
If you are not sure which tube fits your setup, tell us the machine model and we will confirm it before you order. Call 1-855-492-3316 or email [email protected], seven days a week from 9 AM to 9 PM. Orders over $150 ship free across Canada.
This guide is here for general information and is not a substitute for medical advice. Follow your prescription and your care team’s instructions for pressure settings and therapy use, and consult your machine’s manual before changing tubing type or diameter.
