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++ Samsung AR5500, Split system, White, Cooling, Dehumidifying, Heating, 2500 W, 3200 W, 4436 BTU/h Samsung AR5500. Type: Split system, Product colour: White, Air conditioner functions: Cooling, Dehumidifying, Heating. Power consumption (cooling) (max): 670 W, Power consumption (heating) (max): 890 W, AC input voltage: 220-240 V. Indoor unit noise level (high speed): 35 dB, Indoor unit width: 75 cm, Indoor unit depth: 24.6 cm. Outdoor unit noise level: 45 dB, Outdoor unit width: 72 cm, Outdoor unit depth: 26.5 cm. Energy efficiency class (cooling) (old): A++