Chillers are used primarily for large industrial process cooling and commercial ______.

• A. Air Conditioning
• B. Heating
• C. Ventilation
• D. Humidity Control

Answer: (A)

Chillers are designed to remove heat and provide a steady supply of chilled water for HVAC systems. In large facilities, their main job is to support air conditioning by circulating this cooled water through cooling coils in air handling units, where it absorbs heat from indoor spaces and cools the air that is delivered to rooms. That’s why, in the context of large industrial process cooling plus commercial work, the blank is filled with air conditioning—the primary service chillers deliver is cooling for spaces. Heating is the opposite function, so chillers aren’t used to provide warmth. Ventilation involves moving outside air through a space, which isn’t the core role of a chiller. Humidity control can be influenced by cooling (cooling tends to dehumidify), but it’s not the primary purpose of a chiller in typical commercial systems.