Commercial AC People. An air conditioner simply moves heat energy from one place to another. The evaporator coil absorbs heat from the space to be cooled, and the condenser coil rejects or discards the heat. This arrangement makes a very flexible and efficient system that can be adapted to nearly any floor plan. Package air conditioning systems combine all components in one box that is usually located outside on the roof.
Air ducts connect the package unit to the operating space of the business.
The size of an air conditioner is referred to in tonnage. Today s businesses vary widely in features such as occupant load, lighting and other heat-producing equipment. These features drastically affect the required tonnage of the air conditioning system. If air conditioner size is in question, a professional air conditioning engineer can perform a load calculation of the space to determine the correct unit size. SEER indicates the ratio of cooling BTUs output to the watts input.