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 quiet as a library. In addition, the Dual Inverter technology allows the unit to operate efficiently, saving you as much as 25% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use Amazon Alexa and Hey Google to control the sound of your voice. 4 cooling and fan speeds and a 24-hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed 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, an easy window installation kit, a removable (washable) filter, and a check filter alert.