The Aryal S1 E high-wall mono-split air conditioner R32 with highly efficient inverter technology (Class A++ for cooling) offers more than just climate comfort by enhancing the quality of the treated air with air quality technologies (anti-dust, activated carbon, and cold catalyst). The Aryal S1 E also automatically removes dust, mold, and grease from the evaporator through regular cleaning and drying cycles, ensuring clean air in the room.