Lennox 10B72 Motor Module 321894-708 Its single-pole double-throw configuration provides

Its single-pole double-throw configuration provides versatile circuit control

ensuring a perfect fit without modifications

including the THX9421R5021WW model

Its direct-acting or pilot-operated construction requires no minimum operating pressure

Always cross-reference the boiler model number and current logic version to ensure electrical and software compatibility

Lennox 10B72 Motor Module 321894-708 Its single-pole double-throw configuration providesThe Lennox 10B72 Motor Module is a critical ECM blower motor control component designed for precision airflow regulation in residential and light commercial HVAC systems. As a veteran grade OEM replacement part, this module interfaces directly with the system's furnace control board to modulate motor speeds based on real time thermostat demand. It is engineered to handle constant torque applications, ensuring consistent static pressure performance