The LAU120HVP is a singlezone condenser and requires the LG LAN120HVP air handler to operate. The LAU120HVP is the outdoor unit only, indoor units are sold separately and are required to run this model. The LG LAU120HVP is a condenser unit for a ductless split system air conditioning system. It features 11,200 BTU cooling and 13,300 BTU heating capacity and connects to the indoor air condenser through tiny, easy to install refrigerant lines and tubes. LG's ductless systems function much like a central air system, but without the hassle and unattractiveness of invasive ductwork. This LG air conditioning system comes from the Art Cool Picture line. This innovative collection uses a quiet and attractive indoor air handler to effectively cool and heat the single zone where it is installed. Plus, it has an EER rating of 12. 5 and a SEER rating of 20, making it a truly energy efficient option.