Millennium M10: This stationary device for home use is available in models with or without an oxygen purity indicator ... Philips oxygen concentrators: Millennium M10: $2,025 EverFlo: $1,095 ...

Until now, oxygen concentrators have been very similar - heavy, bulky, noisy, or require frequent maintenance. But EverFlo from Respironics is a unique stationary concentrator that delivers the ...

When the oxygen concentrator is on, it makes a loud sound, which indicates that the air is being processed. Make sure to check the light indicator which is an indication of whether the machine is ...