The LG DUAL Inverter air conditioners are the best in cooling innovation. This ultra quiet unit operates at 44 dB in sleep mode, almost as quite as a library. In addition, the DUAL Inverter allows the unit to operate efficiently saving you as much as 40% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your smart phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 3 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. The auto-swing air vent helps direct the flow of air where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy rolling casters, installation kit with built-in storage tray, removable/washable filter and a check filter alert.