When a doctor prescribes oxygen at home, the first question families ask is: concentrator or cylinder? Both are safe and effective — the right choice depends on how much oxygen is needed and for how long.
Oxygen concentrator
A concentrator takes in room air and filters it into purified oxygen. It runs on electricity and never needs refilling.
- Best for long-term or all-day oxygen (COPD, post-COVID lung damage).
- Usually delivers up to 5 litres per minute.
- Needs a stable power supply — keep a cylinder as backup during load-shedding.
Oxygen cylinder
A cylinder stores compressed medical oxygen.
- Works without electricity.
- Can deliver higher flow rates in emergencies.
- Needs regular refills; a 10L cylinder lasts roughly 5–8 hours at 2 L/min.
How to decide
- Oxygen most of the day, for months: concentrator.
- Short-term need after hospital discharge: cylinder (rent).
- Frequent power cuts: concentrator plus a backup cylinder.
- High flow above 5 L/min: cylinder.
Check oxygen levels at home
A pulse oximeter shows blood oxygen (SpO₂) in seconds. Most patients should stay above 92% — your doctor will give you the right target. If it drops below the target and doesn’t recover with oxygen, seek medical help immediately.
