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Optimized Pressure: Pre-set to 4" WC for stable combustion and maximum BTU efficiency
whereas the BX140 is a "cogged" belt intended for smaller sheave diameters where increased flexibility and heat dissipation are required
which is crucial for maintaining stable flame rectification
supporting the regulator's capacity for up to 325
Lennox 12W47 Inducer Assembly 321142-301 Optimized Pressure: Pre-set to 4"As a seasoned technician, you know that a failing Lennox 12W47 Inducer Assembly is often the root cause of pressure switch trip outs and ignition failure in high efficiency systems. This genuine OEM Lennox draft inducer blower (Part Number 20556201) is the precise replacement required for Aire Flo AF92V series furnaces and select Lennox residential heating units. Engineered to manage optimal combustion airflow, this assembly pulls flue gases through
