Air Conditioners with heating function are made with high-quality compressors, high-speed pure copper motors & inner spiral copper tube which are powerful to quickly cool down / warm your home, office, garage or apartment for maximum comfort in quiet operation, perfect appliance in hot Summer or cold Winter. Compared with others, the machine features a high 19 SEER2 grade, which means that it is more energy-efficient and much more cost-efficient. | Cool Living 12,000 BTU Mini Split Ductless AC and Heater Set