Carrier KR11AJ912 Blower Pulley 320788-703 Quiet Operation: Optimized wheel geometry

Quiet Operation: Optimized wheel geometry reduces vibration and noise during the combustion venting sequence

Built with five solid copper conductors

What causes an "Outlet Sensor Fault" on Lochinvar boilers

Always calculate equivalent length

the S1-031-02986-000 is the current factory-authorized replacement for original part number 031-02986-000 and serves as the standard service part for numerous AH and AP series air handlers

Carrier KR11AJ912 Blower Pulley 320788-703 Quiet Operation: Optimized wheel geometryThe Carrier KR11AJ912 Blower Pulley is a critical drive component engineered for precise airflow management in commercial HVAC systems. This fixed bore blower sheave is designed for high torque applications where maintaining a constant RPM is essential for system balance and static pressure requirements. Constructed from durable cast iron or high grade steel, the KR11AJ912 ensures minimal vibration and consistent power transfer from the motor to the