What is the difference between a Spiral chiller and a Spiral cooler?

A spiral chiller uses refrigeration to chill products to temperatures just above freezing, often between 10°C to -2°C, and is designed to preserve food quality without freezing. A spiral cooler, on the other hand, operates at higher temperatures, usually without refrigeration, using ambient air to cool products to safe handling temperatures. It’s ideal for applications like proofing or cooling products without freezing them​.