Weil McLain 321114362 Heat Exchanger

The Weil McLain 321114362 Heat Exchanger is a core thermal transfer component used to move heat from combustion gases to circulating water within a boiler system. It consists of metal passages that allow efficient energy transfer while keeping combustion and water circuits separate. In HVAC systems, it is installed inside boilers where the primary section for generating heated water used in hydronic heating applications. It supports efficient energy utilization, stable temperature output, and consistent system performance during heating cycles in residential and light commercial boiler installations.