19 Seer. Inverter driven Samsung compressor. BOOST MODE gives additional 18% capacity. Ultra-high efficiency system. Stainless steel cover. Greatly reduced sound levels. Salt and spray resistant. Demand defrost. No high AMP start up. Variable speed indoor and outdoor blower motor. Cooling temperatures from 50-125 degrees. Heating temperatures down to 0 degrees. VP 8000 Wi-Fi Honeywell Thermostat. 12 Years Parts Warranty, 12 Year Compressor Warranty, 10 Year Labor Warranty and 12 Year Replacement Dependability Promise.