Table 1

Differences between oxygen concentrators and compressed gas cylinders

Oxygen concentratorsCompressed oxygen cylinders
Power source requiredYes, continuously (according to model: 100–600 W)No
Transport requiredOnly at the time of installationYes, regularly; heavy and costly to transport
Exhaustible oxygen supplyNo, continuous supply as long as power remains uninterruptedYes, depending on the size, storage pressure, and patient needs
User careModerate: cleaning of filters and device exterior, and minimise fire hazardMinimal: regular checking, minimise fire hazard (no grease or flammables)
Operational costsSmall: electricity and maintenanceHigh: cylinder refills and transport from refilling station to a hospital
MaintenanceModerate: check for low oxygen output with analyserModerate: check for pressure leaks with gauge