The Trane EXC01877 Heat Exchanger is a replacement component designed for compatible Trane HVAC heating equipment. It transfers heat generated during the heating process to the circulating air while keeping combustion gases separate from the indoor air stream. This heat transfer process helps provide consistent warmth and supports efficient system operation. Commonly used in compatibl... https://www.partshnc.com/trane-exc01877-exchanger-heat