A split AC, with a capacity of 1.5 ton, 2 ton, or 2.5 ton, consists of two separate units: an indoor unit and an outdoor unit. The indoor unit is usually mounted on a wall inside the room, while the outdoor unit is located outside the building. The indoor unit contains the evaporator coil, air filter, and blower, while the outdoor unit houses the compressor, condenser coil, and expansion valve.
A window AC, with a capacity of 1.5 ton, 2 ton, or 2.5 ton, is a self-contained unit that is installed in a window or through a wall. It contains all the components necessary for cooling in a single box, including the compressor, evaporator, condenser, and expansion valve.
Both types of AC units work by drawing in warm air from the room, cooling it through the refrigeration cycle, and then blowing the cooled air back into the room. The capacity of the AC unit refers to its cooling power and is measured in tons. A higher capacity unit can cool a larger area, but may also be more expensive to purchase and operate.