Depending on the location of the air conditioning equipment, air conditioning systems are classified as follows:
Central System: In this system, all the air conditioning equipment is installed at a focal or central point and then the conditioned air is distributed through ducts to all the rooms or enclosures. This type of system requires less space for installation and maintenance is also easy. It is economical. Due to the presence of ducts, it requires large space.
Self-standing or unit system: In this system, special portable attractive cabinets that suit modern room decor are placed inside the room near the ceiling or window. They are self-contained in all respects and the conditioned air is generated within the unit itself. The conditioned air is then blown directly into the room without the aid of a duct.
Semi-Contained or Unitized Central System: In this system, each room is supplied with an air conditioning unit and the room unit receives its supply from the central system. Such systems result in smaller duct sizes. Another variation of this system is that the conditioned air can be supplied from a central unit but the heating or cooling can be done in the room itself.
Combined System: A combined system may consist of (i) centralized and self-contained system (ii) centralized and semi-contained system and (iii) autonomous and semi-contained system.
The selection of a particular air conditioning system depends on several factors such as the size of the structure, the heating system, the volume and type of air conditioning unit, the period of the year for which the air conditioning is required and the number of rooms to be serviced. Air conditioning is required.
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