Gree GSH-18NFV410 comes with Cold plasma technology, this is a unique technology that deters odors and for clear air delivery systems. Plasma is a substance that generates by lightning at room temperature. The Air Conditioner featured with Smart Energy saving operation, 18000 BTU, Cold Air Prevention, Auto Clean Function, Adjustable air flow volume, Up/down swing flaps & LED Display, Super quiet and Humanized sleep function. In this AC, the Intelligent Defrost technology, It helps to reduces energy loss and defrost time by only defrosting when needed instead of by a set timer. This latest Gree GSH-18NFV410 Inverter Air Conditioner has 10 Years Compressor Warranty.