Standard features include the Variable Speed 2 Stage Compressor, G-10 Inverter Technology, 7 Speed fan with 180° vertical air supply, wireless remote control, and more. The 18K Sapphire System is Energy Star Rated with a 24.5 SEER rating. The Sapphire's ULTRA heating technology will keep your home or business warm when outside temperatures reach as high as 75°F and as low as -22°F. This system will also keep these areas cool when outside temperatures reach between 0°F and 129°F. Enjoy direct control from your smartphone with the GREE+ App. Feature Detail Compressor Variable Speed 2 Stage Compressor Inverter Technology G-10 Inverter Technology Fan Speed 7 Speed fan with 180° vertical air supply Remote Control Wireless Remote Control No specific features provided for this section. Please refer to the product documentation for detailed features.