GVS Oxygen concentrator is one of the best oxygen concentrators in the Indian market right now that does not fail to deliver and is also very easy to use. It is designed to be used in nursing homes, homes, clinics, and hospitals. It functions by extracting oxygen from the atmosphere (Pressure Swing Adsorption process). It has a humidifier that helps in adding moisture to the outflowing air to reduce dryness thus preventing irritation in the nasal passages and throat. The power consumption of this machine is 300 watts.