Home oxygen therapy involves a simple routine once you understand your equipment, but the details matter. Whether you’re using a concentrator or a portable tank, the basics come down to setting the right flow rate, keeping your equipment clean, and following a few critical safety rules to prevent fire risk. Here’s everything you need to know to use supplemental oxygen safely and comfortably at home.
Types of Oxygen Equipment
Most people on home oxygen use one of three types of equipment: a stationary concentrator (plugs into the wall and pulls oxygen from room air), a portable concentrator (battery-powered, designed for travel), or compressed gas cylinders (metal tanks filled with pressurized oxygen). Your supplier will set you up with the right type based on your prescription and lifestyle, but the day-to-day operation is similar across all three.
The oxygen reaches you through a delivery device, almost always a nasal cannula: two small prongs that sit just inside your nostrils, connected to thin tubing that loops behind your ears. Nasal cannulas work at flow rates between 1 and 6 liters per minute, which covers the vast majority of home prescriptions. At 1 liter per minute, you’re breathing about 24% oxygen (compared to the 21% in normal room air), and each additional liter adds roughly another 4%. Simple face masks and other devices exist for higher flow needs, but those are typically used in hospital settings.
Setting Up and Turning On Your Equipment
For a concentrator, place the unit at least a foot or two from walls and furniture so air can circulate around it. Plug it in (for stationary models), attach your nasal cannula tubing to the oxygen outlet, and turn the device on. Set the flow meter to the exact number your doctor prescribed. Most concentrators have a display showing the flow rate and, on portable models, remaining battery life. You should see a green indicator light confirming normal operation. If a yellow or red light appears, check the user manual for your specific model.
For compressed gas cylinders, open the valve slowly by turning the handwheel counterclockwise. Check the pressure gauge to confirm the tank has enough oxygen, then set the flow meter to your prescribed rate before putting on the cannula. When you’re done, turn the valve off and let any remaining pressure bleed out through the flow meter.
If your setup includes a humidifier bottle (common at higher flow rates to prevent nasal dryness), fill it with distilled water to the marked fill line before turning the oxygen on. The oxygen will bubble through the water, adding moisture before it reaches your nose.
Fire Safety Is Non-Negotiable
Oxygen itself doesn’t burn, but it makes everything around it burn faster and more intensely. This is the single most important safety consideration, and the rules are straightforward.
- Keep oxygen equipment at least 10 feet from any heat source or open flame. That includes candles, matches, lighters, space heaters, wood stoves, cooking stoves, electric razors, and hair dryers.
- Never smoke while using oxygen, and don’t allow anyone to smoke near you. This is the leading cause of oxygen-related fires.
- Avoid petroleum-based products on your skin. Petroleum jelly, oil-based hand lotions, and vapor rubs are all flammable in an oxygen-enriched environment. Use water-based products instead. A quick check: water should be the first ingredient on the label.
- Never oil or grease any part of the oxygen equipment. Don’t handle valves or connectors with oily hands.
Store compressed gas cylinders upright and secured so they can’t tip over. A falling cylinder can damage the valve, and a tank under high pressure with a broken valve becomes extremely dangerous. Federal safety standards require cylinders to stay upright at all times except when briefly being carried or moved.
Staying Comfortable Day to Day
The most common complaints with nasal cannulas are dry nasal passages, sore skin behind the ears, and irritation inside the nostrils. All of these have simple fixes.
For nasal dryness, a saline spray works well. Use it as often as needed throughout the day. For dry or cracked lips and the skin around your nose, apply a water-based lotion. Remember to avoid anything petroleum-based, which can also clog the small holes in your cannula prongs.
The tubing that hooks behind your ears can rub the skin raw over time, especially if you wear oxygen for many hours a day. Tucking a small piece of gauze between the tubing and your skin creates a cushion that prevents this. Some medical supply companies also sell soft foam ear protectors designed specifically for cannula tubing.
Cleaning Your Equipment
Keeping your equipment clean prevents bacterial growth and keeps everything working properly. The cleaning schedule depends on the component:
- Nasal cannula: Wipe the prongs daily with a damp cloth. Most suppliers recommend replacing the entire cannula every two to four weeks.
- Oxygen tubing (without humidifier): Clean monthly.
- Oxygen tubing (with humidifier): Clean and disinfect weekly.
- Humidifier bottle: Disinfect with a solution of one part white vinegar to three parts water. Rinse thoroughly and let it air dry before refilling with distilled water.
For concentrators, wipe down the exterior regularly and clean or replace the intake filter according to the manufacturer’s instructions, typically every couple of weeks.
Monitoring Your Oxygen Levels
A pulse oximeter, the small clip that fits on your fingertip, tells you your blood oxygen saturation (SpO2). For most people, the target range is 94% to 98%. The target for people with COPD is different: guidelines from the British Thoracic Society and other major organizations recommend keeping saturation between 88% and 92%. Research on COPD patients has found that those who maintained saturations in the 88% to 92% range had better outcomes than those with higher readings, even among patients with normal carbon dioxide levels.
This is why it’s important not to turn your flow rate higher than prescribed. More oxygen isn’t always better. Taking in more than your body needs can slow your breathing and heart rate to dangerous levels, a condition called oxygen toxicity. Symptoms include chest pain, difficulty breathing, dizziness, headaches, fatigue, muscle spasms, nausea, and vision problems. If you experience any of these, check that your flow rate matches your prescription and contact your provider.
Using Oxygen While Traveling
Portable oxygen concentrators are the practical choice for travel. Most run on rechargeable batteries and weigh between 5 and 10 pounds. For car trips, you can plug many models into a vehicle’s power outlet to conserve battery.
For air travel, the FAA allows portable oxygen concentrators on board as long as the device meets specific acceptance criteria. It must be FDA-cleared, free of radio frequency interference with aircraft systems, and carry a red label from the manufacturer confirming it meets FAA standards. Compressed gas cylinders and liquid oxygen are not permitted on commercial flights.
Call your airline well in advance, ideally when booking your ticket. Most airlines require at least 48 hours’ notice and may ask for a physician’s statement. Bring enough fully charged batteries for the entire flight plus a reasonable cushion for delays. Some airlines specify that you need 150% of the expected flight duration in battery life, so check with your carrier for their specific policy.
Common Adjustments Over Time
Your oxygen needs can change. Many people use a different flow rate during sleep than during the day, or a higher rate during physical activity like walking. Your doctor may prescribe separate rates for rest, exercise, and sleep. Pay attention to how you feel during different activities, and discuss any changes with your provider at follow-up visits. A pulse oximeter at home gives you useful data to share at those appointments.
If you notice your concentrator running louder than usual, your tubing developing cracks, or your oxygen levels dropping despite using the prescribed flow rate, contact your equipment supplier. These are signs that something in the system needs attention or replacement.