Nasal Cannula Guide for Home Oxygen: Fit, Setup and Replacement
How to choose and fit a nasal cannula, connect it to a home oxygen concentrator or cylinder, pick the right tubing, swivel connectors and humidifier, and know when it is time to replace it.
A nasal cannula is the small, simple part of a home oxygen setup that you touch all day. This guide covers how to choose one, set it up on a concentrator or cylinder, keep it comfortable, and know when it is time for a new one.
It is written for people using oxygen at home and the family members and carers who help them. If you are setting up for the first time, or your current cannula never feels quite right, start here.
The short version
A nasal cannula should sit gently in the nose, loop comfortably over the ears, and be replaced regularly. Use the flow rate your doctor prescribed, check every connection when you set up, keep tubing clear of trip points and kinks, keep oil-based products and open flames away from your oxygen, and follow the manufacturer's instructions for replacement. Cannulas, tubing and connectors are inexpensive, so keep spares on hand.
On this page
What a nasal cannula is
A nasal cannula is a length of soft tubing with two short nasal prongs at its centre. The prongs sit just inside the nostrils, the tubing loops back over the ears, and a sliding toggle under the chin holds it in place. The other end connects to your oxygen source: a stationary or portable concentrator, or a cylinder with a regulator and flowmeter.
People often ask about a nasal cannula vs nasal prongs. They are the same device: "nasal prongs" is a common name for the whole cannula, and strictly it describes the two tips that sit in the nose.
A cannula lets you talk, eat and drink with it in place. Whether a cannula or a mask suits you is your doctor's call. If you are weighing the two, our article on oxygen face masks vs nasal cannula explains the differences.
Adult or child: choosing a cannula
For most home users, the choice comes down to size and comfort. Standard home oxygen cannulas are low-flow devices used at the flow rate written on your prescription. High-flow nasal therapy is a different treatment that uses purpose-built equipment, so it is not covered here.
| Cannula | Best for | What to know | Price |
|---|---|---|---|
| Adult Nasal Cannula with 2m Tubing | Most adult home oxygen users | Soft-tip prongs. Single patient use. Add extension tubing if 2m is too short. | $3.97 each / $94.99 box of 50 |
| Child Nasal Cannula with 2m Tubing | Children, and adults with small nostrils | Smaller curved prongs in soft medical PVC. Single patient use. | $8.20 each / $259.03 box of 50 |
If the prongs feel too long, press on the inside of your nose, or keep slipping out, try the other size, or ask your oxygen provider or clinician which cannula they recommend for your face and flow rate. You can see the full range in our oxygen masks and cannulas collection.
Setting up on a concentrator or cylinder
The routine is the same every time you fit a new cannula. Read your concentrator or regulator manual alongside these steps, because outlets and controls vary between models.
- Check your prescription Confirm the flow rate your doctor prescribed and when you should use it. Do not change the setting yourself.
- Connect to the outlet Push the cannula tubing firmly onto the oxygen outlet of your concentrator, the outlet of the humidifier bottle if you use one, or the barbed outlet of your cylinder flowmeter. If you are adding extension tubing, join it with a connector first.
- Fit the prongs With the prongs curving downwards, place them gently in your nostrils. Loop the tubing over each ear and slide the toggle up under your chin until it is snug but not tight.
- Turn on and set the flow Switch the concentrator on (or open the cylinder valve slowly) and set the flow to your prescribed rate.
- Check that oxygen is flowing You should feel a light flow at the prongs. If you use a humidifier, you should see it bubbling. If not, work through the troubleshooting table below.
- Route the tubing Run the tubing where it will not be stood on, caught in doors or pinched under furniture, and away from heaters and stoves.
Using a portable concentrator? Most portable concentrators are designed to be used with a nasal cannula, and many deliver oxygen in pulses as you breathe in. Check your manual for the cannula and tubing length it recommends, because tubing that is too long can affect how a pulse-dose unit senses your breath.
Tubing, connectors and other oxygen accessories
A few low-cost oxygen accessories make a big difference to everyday comfort and freedom of movement around the house.
| Accessory | What it does | Good to know |
|---|---|---|
| Oxygen Tubing 10m (also 2m) | Extends the reach of your cannula so you can move between rooms | Check your concentrator manual for the maximum tubing length it supports. Longer tubing is more likely to kink or become a trip hazard. |
| Oxygen Tubing Connector – Swivel | Joins two lengths of tubing with a joint that rotates | The oxygen tubing swivel connector helps stop the tubing twisting and tangling as you move. |
| Oxygen Tubing Connector | A simple fixed join between tubing and cannula | Fine for short runs where tangling is not a problem. |
| Oxygen Humidifier Bottle – Disposable | Adds moisture to the oxygen from a concentrator | Only if your prescriber or concentrator manual recommends it. See the next section. |
If you use cylinders, the oxygen tank accessories that matter most are the regulator and flowmeter, which control the flow your cannula receives. Those should match your cylinder and be serviced regularly. Call us if you are not sure what you have.
Do you need a humidifier?
Not everyone does. Whether to humidify your oxygen is a question for your doctor, and your concentrator manual will say whether a humidifier can be fitted and how. If you have been advised to use one, a few points help:
- The disposable humidifier bottle uses the standard screw fitting found on major concentrator brands. Check it against your model before you buy.
- Fill to the marked line with the water type your manual specifies, and clean or replace the bottle as the instructions direct.
Our step-by-step guide on how to connect a humidifier to an oxygen concentrator walks through the fitting.
Comfort and fit
Small adjustments usually fix the common complaints.
- Sore ears or cheeks: loosen the chin toggle slightly so the tubing rests rather than pulls. Make sure the tubing sits flat behind the ears, not twisted.
- Prongs slipping out: check that the prongs curve downwards into the nose. Clip the tubing to your clothing so its weight does not drag on the cannula.
- Tubing catching as you move: add a swivel connector and keep slack tubing loosely coiled near the concentrator.
- Dry nose or skin: ask your doctor or pharmacist what you can safely use. Do not put oil- or petroleum-based products on your face or on the tubing.
Cleaning and replacement
The cannulas we stock are made for single patient use and are not intended to be reprocessed. The manufacturer's notes say reusing, soaking, rinsing or sterilising the cannula with chemicals may leave residues and affect how it works. In practice, replacing it is the cleaning routine.
Follow the replacement schedule in the instructions for use and any advice from your oxygen provider or clinician. Replace it sooner if you notice any of these:
- Prongs or tubing have gone stiff, cloudy or discoloured
- Cracks, splits or a kink that will not straighten
- The cannula has been dropped somewhere unclean or damaged
- You have been unwell. Ask your clinician whether to start a fresh cannula
Because each cannula costs only a few dollars, many households keep a box of spares so a fresh one is always ready, including a spare set for travel.
Oxygen safety at home
Oxygen is not flammable itself, but it makes fire burn more readily. Fire and Rescue NSW's medical oxygen safety checklist is a practical reference for any household using oxygen 2. Key points include:
- No smoking in any room where medical oxygen is used.
- Do not use appliances with an open flame, such as gas heaters and fireplaces, in the same room.
- Keep cylinders, full or empty, away from heat sources.
- Never let lubricants such as oil, grease, baby oil or lubricating gel touch oxygen fittings or hoses. Wash your hands before handling them if you have been using these products.
Australia's clinical guideline on adult home oxygen therapy also stresses that people using oxygen at home need clear education on their devices and on the limitations and risks of oxygen 1. If anything about your setup is unclear, ask your oxygen provider or call us.
Quick troubleshooting
| Problem | What to check |
|---|---|
| Can't feel any flow | Is the concentrator on and set to your prescribed flow? Are all connections pushed fully on? Is the tubing kinked or pinched under furniture? If you use a humidifier, is the lid screwed on straight? |
| Humidifier not bubbling | Usually a loose lid or connection, or a kink downstream. Re-seat the bottle and check the tubing run. |
| Tubing keeps twisting | Fit a swivel connector between the cannula and the extension tubing. |
| Concentrator alarm | Follow your manual, which explains what each alarm means. Check for a kinked line first. If it persists, switch to your backup supply and call your provider. |
Equipment or you? If the equipment checks out but you feel more breathless or unwell than usual, contact your doctor. Do not increase your flow unless you have been told to.
Common questions
What is the difference between a nasal cannula and nasal prongs?+
They are the same device. "Nasal prongs" is a common name for a nasal cannula. Strictly, the prongs are the two short tips that sit in your nostrils, and the cannula is the whole assembly including the tubing.
How often should I change my nasal cannula?+
Follow the manufacturer's instructions for use and your oxygen provider's advice. Replace it sooner if it becomes stiff, discoloured, cracked or kinked, or if you have been unwell and your clinician suggests a fresh one.
Can I wash and reuse a nasal cannula?+
The cannulas we stock are for single patient use and are not intended to be reprocessed. The manufacturer advises against soaking, rinsing or sterilising them with chemicals. Wipe dust off the outside of extension tubing if needed, and replace the cannula itself.
How long can my oxygen tubing be?+
It depends on your equipment. Your concentrator manual states the maximum tubing length it supports. Within that limit, use only as much as you need, because longer runs are more likely to kink or trip someone.
Do I need a humidifier with my nasal cannula?+
Not always. Your doctor and your concentrator manual are the right guides. If humidification is recommended, use a bottle that fits your concentrator and follow its cleaning and replacement instructions.
Need help with your setup?
Our team supplies and services home oxygen equipment every day. If you are not sure which cannula, tubing or connector suits your concentrator or cylinder, call us on 1300 881 824 or send us a message and we will help you get it right. You can also browse oxygen masks and cannulas online.
References
- Khor YH, McDonald CF, Serginson J, et al. Thoracic Society of Australia and New Zealand clinical practice guideline on adult home oxygen therapy. Respirology. 2024;29(9):765–784. thoracic.org.au
- Fire and Rescue NSW. Medical oxygen safety checklist. fire.nsw.gov.au
Please note
This article is a general guide to nasal cannulas and home oxygen accessories. It is not medical advice. Use oxygen only as prescribed by your doctor, and speak to your doctor about your flow rate, how long to use oxygen each day and any symptoms.
Product details are taken from manufacturer documentation and may change. Prices are correct as at 6 November 2026. Always follow the instructions for use supplied with your equipment.
For help choosing or setting up equipment, call Mega Medical on 1300 881 824.
