Description
The Carrier LA21RB556 Inducer Blower Wheel, is a combustion air movement component used in HVAC heating systems equipped with induced draft assemblies. It works by rotating within the inducer housing to move combustion gases and airflow through the heat exchanger and venting system during furnace operation. This element is commonly placed in residential, and light commercial gas furnaces where controlled airflow is required for ignition, combustion stability, and exhaust discharge. Its role within the heating assembly supports proper draft conditions and assists pressure-sensitive controls connected to the furnace cycle. The component is used during equipment servicing, boiler replacement, and routine maintenance of forced-air systems.









