The philips ever flo stationary Oxygen Concentrator delivers a great performance and demands so little in return. Its small, quiet and designed to be easier and less expensive to operate, while still providing you with the standard of oxygen therapy you deserve. It provides you with up to 5 liters per minute of oxygen without bulky oxygen tanks. We know that individuals using oxygen therapy face enough restrictions, which is why we carry the ever flo oxygen concentrator to be patient-friendly. Its small, quiet, uses less electricity and produces less heat. Ever flo features a compact, non-medical design that fits your home.