Standard chiller system
Standard packed HVAC units
The package units are either direct or indirect. The direct package unit blows cold air directly into the space, whereas the indirect chiller unit, chills the water and pumps them around through pipes and fan coils to deliver the cool air.
Advantages
Mass-produced, easy to purchase
Simple to install and operate
upfront cost savings
Disadvantages
Computer control systems are normally hard and expensive to replace
Not very efficient
Not very reliable
Expensive parts
Not always designed to your needs
Poor customer support
