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 31830 AA, Split system, White, Cooling, Heating, 5000 W, 900 W, 5525 W Beko 31830 AA. Type: Split system, Product color: White, Air conditioner functions: Cooling, Heating. Energy efficiency class (heating) (Average heating season): A, AC input voltage: 220-240 V, AC input frequency: 50 Hz