Every ductless mini split unit has filters that help to clean the air from microorganisms, dust odors. Nowadays, the current needs of hygiene and comfort are leading some manufactures to supply the units with ionizer too. COLD PLASMA also known as the ionizer is an additional filter currently the one of the most advanced air-cleaning technologies in the world. The Cold Plasma ionizer releases positive and negative ions; thus, it disinfects and diminishes bad smells in the room. Also, it gathers house small particles, dust, pollen that are responsible for allergies. At the same time, it generates negative ions, in order to create a safe, healthy and relaxing environment.