7 fan speeds Automatic louver mode Air supply extends vertically 180° Heating setback allows for 46° F heating mode Sound as low as 22 dB(A)1 X-Fan mode I FEEL function Sleep mode Wireless remote control included Smartphone control 10-year parts limited and 10-year compressor limited warranties to the original purchasing owner upon timely registration2 Connectable units: 538FR single-zone heat pump, 538KR multi-zone heat pump 1 Quietest size within each model group during low fan-speed operation. 2 If properly registered within ninety (90) days after original installation, parts are warranted to the original purchaser for a period of 10 years. Otherwise, parts warranty is 5 years. For other applications a 7-year parts and 7-year compressor limited warranties apply. See warranty certificate for details.