The primary drawbacks of using an oxygen concentrator include its total reliance on a dependable electrical power source or fully charged battery packs, making units heavier and less pocket-friendly than traditional compressed oxygen gas cylinders. Concentrators also emit low-level ambient mechanical humming and cycling noise during operation, require routine weekly cleaning of particle intake filters, and demand periodic professional servicing of internal sieve beds to preserve high-purity medical oxygen delivery over years of continuous use.