Munters Thermo-Z heat exchanger is designed to recover heat from energy consuming processes up to 1400°F. Energy can be recovered and used for process makeup air, plant or office heating, or preheated combustion air. The unit is fully welded and has variable plate spacing on the heat exchanger supply and exhaust. The internal casing is secured to a cold outer casing by means of integral thermal expansion joints. With various flow patterns and near zero cross contamination, the heat exchanger is both versatile and cost-effective.