Quick answer: An oxygen concentrator supplies concentrated oxygen from room air while it has electricity. A patient needs one only when a qualified clinician has prescribed home oxygen and the exact machine can meet the written flow, oxygen-concentration and interface requirements.
What an oxygen concentrator does
The machine draws in room air, removes much of the nitrogen and supplies oxygen through prescribed tubing or an interface. The number “5L” or “10L” describes a maximum flow class; it does not prescribe the patient’s setting and does not guarantee identical oxygen concentration across brands or flows.
How home oxygen is decided
A single diagnosis or pulse-oximeter reading cannot decide whether a concentrator is required. The treating team may consider symptoms, stable measurements, blood-gas testing, exertion or sleep testing and the risk of carbon-dioxide retention. The prescription should state the flow for rest, sleep and activity, the target range and the response plan.
Do not start oxygen because a reading is below a generic number such as 94%. Pulse oximeters have limitations, and eligibility and targets differ between patients. See the American Thoracic Society oxygen guidance and FDA pulse-oximeter guidance.
Questions to check before choosing a model
- What continuous flow is prescribed during rest, sleep and activity?
- What oxygen concentration does the exact model specify at that flow?
- Which alarms and accessories are required?
- What interface has the clinician prescribed?
- What is the individual plan for power loss or equipment failure?
- Who should be contacted if symptoms or readings change?
Do not split one home concentrator between two patients unless the manufacturer and each treating clinician explicitly approve the complete setup. Flow and concentration must be verified for the intended use.
Relevant Sanjeevia pages
- How to read a prescribed oxygen flow rate
- 5L vs 10L concentrator questions
- Philips EverFlo 5L specifications
- 10L concentrator options
Provider and clinician responsibilities
Sanjeevia can match the written prescription to verified equipment specifications, demonstrate controls and explain alarms and service support. Clinical assessment, target oxygen saturation and changes to flow remain with the treating team.
This guide explains equipment selection and does not prescribe oxygen or replace an emergency plan.