Lennox 51W92 Pressure Switch 8401-025BX is the cross of

8401-025BX is the cross of S8401-025

The Armstrong Furnace R45582-001 Fan Blade is an OEM condenser fan blade engineered for efficiency in residential and commercial split-system condensing units

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and Efficiency Pac (EP) series

Enhanced thermal contact prevents overshoot and protects expensive system components from thermal stress

Lennox 51W92 Pressure Switch 8401-025BX is the cross ofWhen you're dealing with a Lennox furnace that won't cycle past the inducer stage, the Lennox 51W92 Pressure Switch is the primary diagnostic point for proving draft. This genuine OEM Lennox 51W92 is a single pole, single throw (SPST) normally open switch calibrated to close at 1. 00" WC. Engineering wise, this component is critical for 80% and 90% AFUE mid to high efficiency gas furnaces, ensuring that the combustion blower is moving enough air to