LG DUAL Inverter Window air conditioners provide exceptional cooling power that will keep you and your family cool, comfortable and in control. Unlike typical air conditioners that turn on and off to adjust temperatures, the DUAL Inverter Compressor constantly adjusts its speed to maintain desired temperature levels. Jan 30, 2017 The fine new range of Air Conditioners from the house of LG have the revolutionary DualCool Technology. This technology, with the unique Dual Inverter compressor is eon ahead of its conventional counterparts and makes it possible for our Air Conditioners. 4 Room Air Conditioner Safety Precautions To prevent the injury of the user or other people and property damage, the following instructions must be followed. Be sure to read before installing the air conditioner. Be sure to observe the cautions specified here as they include important items related to safety.