Portable and stationary oxygen concentrators solve different mobility and power problems. The correct starting point is not “Which machine is smaller?” but “What oxygen delivery has been prescribed, and when must it be available?” The NHS notes that home oxygen is prescribed after assessment and may be delivered through concentrators, cylinders and portable systems.
Start with the prescription
Confirm prescribed flow/delivery method, hours of use, sleep requirements and whether oxygen is required during activity. Do not translate a pulse-dose setting into a continuous-flow litre-per-minute value without manufacturer and clinical guidance.
Stationary concentrators
Stationary units are mains-powered and commonly used when oxygen is needed for long periods at home. Compare rated flow capability, oxygen concentration specifications, alarms, noise, service support and backup planning. Browse Respmart's oxygen concentrators.
Portable concentrators
Portable units prioritize mobility and battery operation. Compare the exact oxygen-delivery method, battery configuration, charger options, weight and whether the prescribed use includes sleep or travel. Respmart currently lists the Oxymed P2 in its portable oxygen concentrator collection.
Questions before buying
- Is the prescribed delivery continuous flow, pulse dose or another specified method?
- Will the device be used during sleep, walking, travel or mainly at home?
- What backup is required during a power cut or battery depletion?
- Who will service the unit locally?
Related: home oxygen concentrator selection and respiratory equipment travel checklist.
Source
Medical note: This guide is for education and product understanding. It does not diagnose, prescribe oxygen or PAP therapy, select pressure/mode/flow settings, or replace advice from your treating clinician. Follow your prescription and the exact device manufacturer's instructions.
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