The core on this heat exchanger is coated with an epoxy phenolic that will add years to its expected service life. The unit will be used to cool corrosive landfill gases before they enter a carbon filter. Cooling condenses the vapors so they don’t plug the carbon filter. Previous designs failed prematurely because the corrosive condensate ate through the uncoated metal surfaces. The landfill gas is being cooled from 200°F to 85°F. The unit uses ambient cooling air that is drafted over the finned core by an electric fan. Air-cooling reduces operating and installation costs by eliminating the need to plumb and maintain liquid coolant lines.