Whether you're supplementing cooling and heating in an entry or an interior room, you'll appreciate the power and efficiency of this Under Ceiling unit. Its inverter -driven, variable-speed compressor and outdoor fan can accurately match load to drive efficiency and keep temperatures even. If your need is for comfort, features like three indoor fan speeds, a dehumidification mode setting and fixed or oscillating louver control will make an impression. If you are more concerned with assuring consistent temperatures year round you'll be able to cool in temperatures as low as 23°F (5°F with optional wind baffle) and heat in outdoor temps ranging from -4 to 59°F. And with line lengths of up to 245' this versatile unit can go just about anywhere. . Up to 20.6 SEER cooling efficiency. Up to 11 HSPF heating efficiency. Line lengths 165-245' depending on unit capacity. Variable-speed digital inverter compressor. 3 indoor unit fan speeds. Power-saving mode. Motorized louver allows fixed or oscillating motion. Specific temperature setting adjustments from 62-86°F. Auto restart after power failure. Indoor sound: as low as 34 decibels. Dehumidification mode. Washable filter with on-unit filter maintenance indicator. System diagnostics. 5-year parts limited and 7-year compressor limited warranties .OPTIONAL FEATURES . Wireless remote control. Wired wall control .