Low Noise Performance: Operates at sound levels as low as 50dB (in low mode) eliminating unnecessary noise Supplemental Heat: For cooler days use the supplemental heat option to add warmth to your space Multiple Fan Speeds: 2 cooling, heating and fan speeds allow you to customize your cooling or heating Auto Restart: After a power failure, Auto Restart will automatically turn the unit back on when power is restored Cools Rooms up to 570 Square Feet: LW1223HR is ideal for cooling medium rooms (19' X 30')