There are two types of central air conditioning plants or systems: 1- Direct expansion or DX central air conditioning plant: used in small buildings where huge compressor, and the condenser are housed in the plant room, while the expansion valve and the evaporator or the cooling coil and the air handling unit are housed in separate room. 2- Chilled water central air conditioning plant: useful for large buildings comprising of a number of floors. It has the plant room where all the important units like the compressor, condenser, throttling valve and the evaporator are housed. The air handling units comprise the cooling coil through which the chilled brine flows, and the blower. Parts of a Central AC Unit:

To operate and maintain central air conditioning systems you need to have good operators, technicians and engineers. Cool Earth HVAC Engineers have the experienced team for installation and maintenance of Central Air-conditioning Plant.