On- and offshore, oil and gas, clean energy, power plants, pump sets, sprinkler systems Industrial applications often place heavy loads on engines. Coolant pre-heaters help engines to run as smooth as possible by keeping them at the optimum operating temperature. In addition, oil and fuel preheaters prevent fuel gelling and other cold related problems, like frozen fuel systems or clogged filters due to gelled fluids. Smooth running engines consume less fuel, suffer less from parts wear, and require less maintenance.