Fluid cooling system for users using air-condensed refrigerant gas. Electronically controlled by a dedicated microprocessor system, they are equipped with a circulation pump on the user circuit, a primary circuit refrigeration unit, expansion vessels, a power panel, a control panel, a finned condensing coil with high-efficiency ambient air, and certified control and safety systems. Available in standard versions for design temperatures from 7°C to 60°C and for power outputs up to 500 kW.