The term COOLING DEVICE can be broken down into three crossword solutions: FAN (3 letters), CHILLER (7 letters), and EXHAUSTFAN (10 letters). A FAN is a device that uses blades to create a current of air, which is used to cool people or objects. A CHILLER is a device that uses a refrigerant to cool air or liquids. An exhaust FAN is a device that uses blades to draw air out of an enclosed space, such as a kitchen or bathroom, to reduce humidity and temperature.