CHWS stands for which term?

• A. Chilled Water Storage
• B. Chilled Water Supply
• C. Condenser Water Supply
• D. Cooling Water System

Answer: (B)

Understanding HVAC abbreviations helps you read diagrams and specs quickly. CHWS specifically identifies the supply leg of the chilled water loop—it's the chilled water that leaves the chiller and flows to the cooling coils and air handling units to absorb heat from the spaces. This supply path is typically paired with CHWR for the return line, which brings warmer water back to the chiller to be cooled again.

Chilled Water Storage would imply an actual tank holding cooled water, which CHWS denotes a piping supply path rather than storage. Condenser Water Supply refers to the water used to cool the chiller’s condenser, a different circuit altogether. Cooling Water System is too generic and does not specify the chilled-water supply line. So the term CHWS is the Chilled Water Supply.