Oxygen Concentrator EverFlo Stationary Oxygen Concentrator 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 features homecare providers want and patients deserve. EverFlo reduces operating costs with a design that is: Lightweight – only 31 lbs Smaller and sleeker Easy to store and transport Low maintenance Quiet Simpler for patients to use and maintain Manufacturer:  Respironics Respironics Millennium Concentrator The is designed to be reliable and easy to move around due to its lightweight. Additionally, the Millennium is extremely quiet. With 60% fewer parts, this concentrator is simple to service, and requires less maintenance over its lifetime. Manufacturer:  Respironics   More Products