Two things cause most of the trouble with home oxygen, and neither is the machine. One is fire. The other is fifteen metres of tubing running through a house that was not designed for it.
Neither is complicated to manage once you know what you are managing. This is general safety information for people already prescribed home oxygen — it does not replace your device manual, the training your supplier gave you, or the instructions of your prescriber.
Fire: what is actually going on
Oxygen itself does not burn and it is not explosive. What it does is enrich the air around it, and materials that are ordinarily hard to ignite become easy to ignite, burn far hotter, and burn much faster in an oxygen-enriched atmosphere. A small flame that would be a minor incident becomes a serious one very quickly.
Enrichment also lingers. Oxygen soaks into fabric — clothing, bedding, upholstery, hair, beards — and stays there for a period after the machine is switched off. This is why the rule is not "don't use oxygen near flames" but "don't have ignition sources in the room at all."
Practical rules
- No smoking, by anyone, anywhere in the home while oxygen is in use. This includes visitors, and it includes e-cigarettes and vapes — their batteries and heating elements are ignition sources. Smoking while wearing a cannula is the single most common cause of serious home-oxygen burn injuries.
- Keep the unit and tubing at least 5 feet from open flame and heat. That means gas hobs, candles, open fires, wood burners, gas or electric space heaters, pilot lights and hair dryers. Many providers advise a greater distance from open flame specifically — follow whatever figure your supplier gave you.
- Do not cook at a gas hob while wearing a cannula. Reaching across a burner with oxygen flowing past your face is a recognised injury mechanism.
- Avoid petroleum-based products on your face, lips or hands — petroleum jelly, oil-based lip balm, some hand creams. Use water-based alternatives.
- Avoid aerosols and flammable solvents in the room: hairspray, air freshener, spray deodorant, alcohol-based hand gel, nail products, paint thinner.
- Watch static-prone fabrics — wool and some synthetics. Cotton bedding and clothing are the safer choice.
- Fit working smoke alarms on every floor and keep a fire extinguisher accessible. Tell your local fire service that oxygen is in use in the home; many maintain a register.
- Signage matters. A notice on the front door tells emergency responders what they are walking into.
Where the machine goes
- In a room with free air circulation — not a cupboard, not an alcove, not pushed flat against a wall. Check the clearance figure in your manual, commonly around 12 inches on all sides.
- Away from radiators, sunlight and any heat source.
- Plugged directly into a wall socket. Avoid extension leads and multi-way adaptors unless the manufacturer permits them.
- Not in a bedroom with the door closed and no ventilation, if that can be avoided.
- Compressed cylinders, if you have them as backup, stored upright and secured so they cannot fall, away from heat, and never in a car boot or a hot conservatory.
Tubing: the trip hazard nobody plans for
Long supply tubing is what lets you move around your own home. It is also, in a household that may already have balance problems, a rope laid across the floor.
- Run it along the perimeter of rooms rather than across them, and tuck it against skirting boards.
- Use tubing clips or channels to keep it out of doorways and off stair treads. Never let tubing cross a staircase.
- Never run it under rugs or carpet — the tubing kinks invisibly and the rug becomes a hazard in its own right.
- Use the shortest length that reaches where you actually need to go. Extra slack is extra hazard. There is also an upper limit on tubing length for reliable delivery — ask your supplier what it is for your setup rather than daisy-chaining extensions.
- Check for kinks whenever you sit down or stand up. Chair legs, wheelchair castors, recliner mechanisms and doors are the usual culprits.
- Consider a swivel connector at the cannula end if you find the line twisting as you turn.
- Gather the slack when you move. Walking while trailing several metres behind you is how the line snags.
Cannula comfort
Discomfort is not trivial — it is one of the main reasons people quietly stop wearing oxygen for as many hours as they were told to.
- Sore or raw ears are common where the tubing loops over them. Foam or fabric ear covers, cannula pads, or repositioning the loop can resolve it. Some people do better with a cannula routed over the head rather than around the ears — ask your supplier what alternatives exist.
- Sore nostrils usually mean the prongs are too large, badly angled, or the cannula is old and stiff. Prongs should sit inside the nostrils pointing gently downwards, following the natural curve, not jammed straight up.
- Dryness, crusting or nosebleeds are the most frequent complaint, particularly at higher flow rates and in winter. Water-based nasal gels are the usual answer — never petroleum jelly. If it persists, tell your prescriber: they may add a humidifier bottle to the setup, which is a prescribing decision rather than something to fit on your own initiative.
- Change the cannula regularly. Stiff, discoloured prongs are uncomfortable and unhygienic. Typical guidance is every two weeks, sooner after any infection.
- Adjust the slider under the chin so the cannula is secure but not tight. Marks on the cheeks mean it is too tight.
- A dry mouth often means you are mouth-breathing, which also reduces how much oxygen you are actually receiving. Worth mentioning to your clinician rather than working around.
Power cuts and emergencies
A concentrator is an electrical appliance and stops when the electricity does. Before you need it:
- Agree a backup oxygen source with your supplier — usually a compressed cylinder — and know how long it lasts at your prescribed setting.
- Register with your electricity provider as a household with medical equipment, so you are prioritised for restoration and given advance notice of planned outages.
- Keep your supplier's out-of-hours number and your prescription details somewhere obvious, not in a drawer.
- Keep a torch and a charged phone near the machine.
- Know your plan for evacuation: what you take, and who to call.
Symptoms that need a clinician, not a technician
Contact your healthcare provider if you experience increasing breathlessness, confusion or drowsiness, a persistent morning headache, or a bluish tinge to lips or fingertips — regardless of what the machine appears to be doing. Do not raise your flow rate in response to feeling short of breath; in some conditions that is actively harmful. The prescribed setting is a clinical decision.
Related reading
- How an oxygen concentrator actually works, and stationary vs. portable trade-offs
- Getting started with home oxygen therapy: prescription, setup and caregiver support
- Oxygen concentrator maintenance: filters, tubing, humidifier bottles and servicing
- Oxygen away from home: batteries, air travel, altitude and power cuts
Browse oxygen management, respiratory care and asthma accessories and respiratory therapy.
Supplemental oxygen is a prescription medical treatment. This article is general information only. Follow your device manual and the instructions of your prescriber and equipment supplier, and do not change a prescribed flow setting.
