Split Type Aircon: Which is best?

[Retz]

All A/C's mentioned in this thread are the DX type. This is the system used in window-type and most residential and some industrial split-type A/C systems, including automobiles. DX means Direct Expansion; The refrigerant inside a tubing is used to directly cool the air inside the room.

The other is chilled water type and is typically used in many large central A/C systems. In this type, the refrigerant is used to chill water. The water is then pumped into the areas to be cooled.

Okay, thanks for the clarification sir. I thought DX type of aircon is somewhat similar to centralized chilled water type a/c.