Package air conditioner is a bigger version of the window air conditioner. However, unlike window air conditioner or PTAC units, it has a higher cooling or heating capacity and is
usually able to cool an entire house or a commercial building. The nominal capacities ranges from 3 tonne to 15 tonne.
The conditioned air are transferred to the space to be conditioned through ducting which is usually hidden in the ceiling and wall of the building. The unit is placed outside the house, a special room in a building or even on top of a roof. This unit is factory assembled and skilled technicians are needed to install this type of unit.
The split and window AC are generally used for the small air conditioning capacities usually up to 5 tons. On the other hand the central air conditioning systems are normally used for the places where the cooling loads goes beyond 15 tons, whereas the packaged AC are used for the cooling the places which lies in between these two extremes. The packaged AC are accessible in the market in the fixed rated capacities of 3, 5, 7, and 10 tons. These units are used usually in places like telephone exchanges, restaurants, small halls, homes, etc.
The unit is placedAll the essential components of the air conditioner, in the packaged AC are covered under a single casing just like in the window AC. Thus the cooling coil, compressor, and air handling unit are all present in a single casing and are put together at the factory location.
The packaged AC are divided into two types, depending on the type of the cooling system used in these systems –
• Water cooled condenser
• Air cooled condensers.