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++ Beko 51210 AA, Split system, Black, Cooling, Heating, 3572 W, 900 W, 4040 W Beko 51210 AA. Type: Split system, Product color: Black, Air conditioner functions: Cooling, Heating. Energy efficiency class (heating) (Average heating season): A, Annual energy consumption (cooling): 208 kWh, Annual energy consumption (heating) (Average heating season): 1289 kWh. Indoor unit noise level (high speed): 57 dB, Indoor unit width: 88.5 cm, Indoor unit depth: 20.5 cm. Outdoor unit noise level: 65 dB, Outdoor unit width: 71.7 cm, Outdoor unit depth: 23 cm. Energy efficiency class (cooling): A++