Lennox 10H14 Blower Pulley 321042-401 the board is likely at

the board is likely at fault

preventing backpressure issues and optimizing thermal transfer

Energy Efficiency: Maintains the correct superheat to reduce energy consumption and lower utility costs

this mechanical temperature control protects against thermal damage by monitoring air duct temperatures

Use the top adjustment screw

Lennox 10H14 Blower Pulley 321042-401 the board is likely atWhen you're out in the field dealing with a slipped belt or a noisy drive assembly, the Lennox 10H14 Blower Pulley is the exact OEM spec you need to restore proper HVAC airflow performance. This high durability cast iron finished bore pulley is engineered specifically for Lennox, Allied, and Armstrong air handlers. Featuring a 4. 45 inch outside diameter and a precise 5 8 inch bore, this 1 groove blower pulley provides the exact torque transfer