Which is better Oxygen concentrator or Oxygen Cylinder?

Differences between oxygen concentrators and compressed gas cylinders
Oxygen concentrators Compressed oxygen cylinders
Power source required
Yes, continuously (according to model: 100–600 W) No
Transport required
Only at the time of installation Yes, regularly; heavy and costly to transport
Exhaustible oxygen supply
No, continuous supply as long as power remains uninterrupted Yes, depending on the size, storage pressure, and patient needs
User care
Moderate: cleaning of filters and device exterior, and minimise fire hazard Minimal: regular checking, minimise fire hazard (no grease or flammables)
Operational costs Small: electricity and maintenance High: cylinder refills and transport from refilling station to a hospital
Maintenance Moderate: check for low oxygen output with analyser Moderate: check for pressure leaks with gauge