A Fin Fan Cooler, also known as an Air Cooled Heat Exchanger (ACHE), is a mechanical heat exchanger that uses ambient air to cool process fluids flowing through finned tubes. High-efficiency fans force air over these extended surfaces (fins), increasing the heat dissipation rate. Unlike water-cooled systems, fin fan coolers operate without water, making them ideal for areas with limited water resources.

They are widely used in industries like oil & gas, petrochemicals, power plants, and refineries for cooling hydrocarbons, water-glycol mixtures, and other process fluids.