12000 btu air-con ductless mini split air conditioner heat pump system 18 seer 110-120v variable speed dc inverter air-con save money - 17.9 seer efficiency will bring savings to your monthly electricity bill. installation ready - 12 feet insulated copper tubing, power and signal cables included. heat and cool - unit is capable of 9000 btu cooling and 9500 btu heating. low ambient ready - can continue to heat in temperatures as low -4° f warranty - 5 years on parts, and 7 years on compressor (registration required).