Thank you for visiting the Free-Flow Engine Cooler website. Free-Flow Engine Coolers have been used to cool engines driving water pumps since 1954.


Our double-wall engine cooler is used almost exclusively on engines driving domestic water pumps across the Southwest United States. It is the only double-wall heat exchanger on the market today designed to accommodate the high flows encountered in Municipal pumping operations that can be installed directly in the pump discharge piping. The Free-Flow double-wall engine cooler is designed and built to satisfy the requirements of the Uniform Plumbing Code. It features robust construction providing many years of trouble free service. 


We also build single wall units for agricultural and non-potable water pumping applications as well as specialty coolers for flood control pump stations.