A++ means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Directive 2010/30/EU. A++ Ariston KIOS BS R32 50 MD0-O, Air conditioner indoor unit, White, Cooling, Dehumidifying, Fan, Heating, 5100 W, Horizontal/Vertical, 1250 W Ariston KIOS BS R32 50 MD0-O. Type: Air conditioner indoor unit, Product colour: White, Air conditioner functions: Cooling, Dehumidifying, Fan, Heating. Energy efficiency class (heating) (Average heating season): A+, Energy efficiency class (heating) (Warmer heating season): A+, Annual energy consumption (cooling): 293 kWh. Indoor unit type: Wall-mountable. Outdoor unit width: 60.2 cm, Outdoor unit depth: 85.3 cm, Outdoor unit height: 34.9 cm. Warranty period: 3 year(s)