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 LG Z09EK, Split system, Cooling, Heating, 2500 W, 3200 W, 1.1 l/h, A LG Z09EK. Type: Split system, Air conditioner functions: Cooling, Heating, Cooling capacity in watts (max): 2500 W. Energy efficiency class (heating) (Average heating season): A, Annual energy consumption (cooling): 159 kWh, Annual energy consumption (heating) (Average heating season): 1318 kWh. Indoor unit type: Wall-mountable, Indoor unit noise level (high speed): 57 dB, Indoor unit weight: 9 kg. Outdoor unit noise level: 65 dB, Outdoor unit weight: 26 kg, Outdoor unit dimensions (WxDxH): 717 x 230 x 483 mm. Noise level (low speed): 20 dB, Noise level (medium speed): 33 dB, Noise level (high speed): 39 dB