*4.1.2 Split type air conditioner*

The split type of air-conditioning is an upgrade of the window air conditioner with two separate. The indoor unit mainly contains the evaporator, vent, evaporator motor, filter, electric panel, and the outdoor comprised of the compressor, condenser, capacitor, fan blade, electrical panel, accumulator, and expansion valve. This air conditioner is more effective in terms of performance and does not require a sizeable expanse of the hole in the building. Though it is more expensive, the maintenance cost is higher than the window air conditioner [20].

### **4.2 Industrial air conditioning**

#### *4.2.1 Standalone air conditioner*

It is an industrial-scale air conditioner that comes with different tons in terms of duty. Also, it has two units, indoor and outdoor. This type of air conditioner is higher in capacity compared to the window and split air conditioners. It comes in various sizes depending on the capacity and manufacturer's design. Its limitation is that it occupies space and expensive [19, 21].

*Impact of Working Fluids and Performance of Isobutane in the Refrigeration System DOI: http://dx.doi.org/10.5772/intechopen.99121*

#### *4.2.2 Central air conditioner*

The central air-conditioner is an improvement of the standalone air conditioner. This air-conditioner found its operations in an extensive environment such as banks, shopping malls, Churches, and Conference centers. It is most effective and works with a network of the ducting system to enable even distribution of cool air across the desired area to be cooled even though it is costly in terms of running cost and maintenance [22, 23].
