OEM Lennox 2-Stage Combustion Blower — 10W59

The Lennox 10W59 (factory reference R100156-01) is a genuine OEM 2-stage combustion air blower for Lennox gas furnaces. It moves combustion air through the burners and exhausts flue gases outside, generating the draft pressure the furnace's pressure switch must verify before ignition. Its 2-stage design adjusts airflow between low- and high-fire operation, delivering quieter runs and steadier comfort in variable-capacity furnaces.

Common failure symptoms: the furnace won't light or trips pressure-switch lockouts, loud rattling, grinding, or humming at startup, an inducer wheel that spins slowly or seizes, no-heat calls on the high-fire stage, or a motor that overheats and shuts down. Failed bearings, a damaged wheel, or an open motor winding are the usual causes.

Why OEM matters: the 10W59 is built to the precise CFM, staging, mounting, and electrical requirements of your Lennox furnace and control board. The genuine OEM blower keeps pressure-switch timing and two-stage draft calibrated correctly, maintains rated AFUE efficiency, and safeguards the factory safety sequence that aftermarket substitutes can disrupt.