Oxygen concentrators are one of the more significant home healthcare purchases people make — and one of the areas where getting the details right matters most. Here's what to actually weigh up.
Talk to your doctor about your prescribed flow rate first
Unlike CPAP therapy, supplemental oxygen use is something you should only start, change, or stop under medical guidance. Your doctor or respiratory specialist will specify a flow rate (measured in litres per minute) based on your blood oxygen levels — this is the single most important spec when choosing a concentrator, and it isn't something to estimate yourself.
Stationary vs portable concentrators
- Stationary concentrators (like a 5L unit) are built for continuous home use — typically quieter, more powerful, and better value per litre of output, but not designed to be carried around.
- Portable concentrators trade some flow capacity for battery power and weight, suited to people who need oxygen support while out of the house.
What the litre rating actually means
A "5 litre" concentrator refers to its maximum continuous flow output, not a fixed dose — you set the actual flow rate according to your prescription, up to that maximum. Buying a unit with more headroom than you currently need isn't wasteful; it means the machine runs comfortably within its capacity rather than at its limit.
Noise level
Since these often run for long stretches at home, noise matters more than people expect going in. Look for the decibel rating in the product spec — anything in the high-30s to low-40s dB range is considered quiet for a stationary unit.
Maintenance
Concentrators have their own filters that need periodic cleaning or replacement, similar to a CPAP machine — check the manual for your specific model's schedule.
Buying with confidence
Our concentrators are TGA-registered and ARTG listed, with the registration number on the product page. If you're unsure what setup matches your prescription, reach out and we'll help you find the right fit.
This guide is general information, not medical advice. Oxygen therapy should always be prescribed and monitored by your treating doctor.