This heat pump has an energy efficiency rating of up to 16 SEER2 and a single-stage scroll compressor, sized for the cooling needs of Port St. Lucie. Lucie. Lucie. Lucie homes during long, humid summers. Pair it with a compatible gas furnace and thermostat to gain dual fuel heating efficiency in colder climates. You can also enjoy the convenience of remote access and the assurance of best levels of performance and comfort management when you pair it with a complete communicating system, including the energy-smart Ion™ Black System Control with Wi-Fi® capability.1