A Sanyo ductless heat pump is an indoor atmospheric conditioner that services only one room. Instead of cooling or heating air in a central furnace that then flows throughout the home through ventilation ducts, a ductless heat pump provides heat or cooling to wall-mounted blowers mounted inside the home.
A ductless heat pump is sometimes called a mini-split heat pump because it consists of two components connected by piping. When cooling, the indoor unit extracts heat from forced air using evaporator coils filled with refrigerant, then pumps that coolant outside to a condenser to dispose of the heat. Heating reverses this process. Depending on the model, as many as four indoor heater/coolers can be connected to a single outdoor unit.