The LG LMN127HVT is a multizone air handler and requires a multizone condenser to operate. The LG LMN127HVT is the indoor unit only, outdoor units are sold separately. Ductless heating and cooling systems are a convenient, single or multi room solution for homes or offices that formerly relied on electric baseboard heaters in the winter and window air conditioning units in the summer. The LG Electronics 10,000 BTU Window Air Conditioner with Remote is designed to cool a room up to 450 sq. ft. , making it ideal for bedrooms and dens. The digital controls give the unit a sleek and contemporary appearance. It has a built in timer that allows you to set the unit on a cooling schedule and the remote lets you adjust the temperature from almost anywhere in the room. Its 3 speed fan gives you plenty of cooling options and the 4 way air deflection helps to evenly distribute the cool air throughout the room for a more comfortable home environment. Ductless heating and cooling systems have been around for over 30 years and are used widely throughout the world.