A furnace or other heat exchanger application for heating, ventilation, air conditioning and refrigeration systems having condensate control. Specifically, the disclosure includes condensate control for secondary heat exchangers for use with high efficiency furnaces, particularly for small tonnage systems, such as residential or unitary systems. The application provides condensate management to permit a plurality of furnace orientations while providing resistance to corrosion due to liquid condensate, while providing a furnace system that utilizes less expensive materials and is easily fabricated.