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. That means less fluctuation and up to 25% more energy efficiency than the minimum ENERGY STAR certification requirement. In addition, the unique BLDC Motor and DUAL Inverter Compressor eliminate unnecessary noise and allow the units to operate low sound levels of just 44dB. The Dual inverters are not just efficient but SMART too! With the SmartThinQ app you can operate your unit remotely or adjust your comfort at home with just the sound of your voice using Amazon Alexa or Google Assistant.