R.W. Fernstrum & Company has been engineering and manufacturing GRIDCOOLER® Keel Coolers for the marine industry since 1949. Fernstrum® has since partnered with WEKA Boxcoolers B.V. and Tranter® to expand our product offerings. Our products are used for cooling marine propulsion engines, generator sets, reduction gears, and auxiliary systems onboard vessels of all sizes worldwide. Each solution is engineered to meet the requirements of your engine, vessel, and operating conditions.

Fernstrum set the standard in marine cooling systems over 65 years ago, building a reputation focused on innovation. Today, we continue our commitment to constant improvement ensuring you have quality, reliability, and the latest in cooling technology on your side.

Contact our sales and engineering team for expert advice on cooler sizing, placement, installation, and service.