The compressor, the heart of the air conditioning system, pumps freon refrigerant through the system. The evaporator coil absorbs heat from the space to be cooled, and the condenser coil rejects or discards the heat. Split system - the condenser coil and compressor are housed in an outdoor cabinet, while the evaporator coil is housed by the indoor air handler with the fan or blower assembly. This arrangement provides a very flexible and efficient system that can be adapted to nearly any floor plan. Package systems - combines all components in one package that is almost always located outside the home.
Air ducts connect the package air conditioner to the living space of the home.
The advantages of package units include low initial equipment cost, portability and easy low-tech installation. The size of an air conditioner is referred to as its tonnage. Today s homes vary widely in features such as window size and replacement. These features drastically affect the heat gain of the structure and the required tonnage of the air conditioning system. If air conditioner size is in question, any competent air conditioning technician can perform a standardized load calculation of the space to be cooled.