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The genuine OEM Lennox 88C73 condenser fan motor spins the outdoor fan blade to draw air across the condenser coil, releasing the heat your system pulls from indoors. It is a core component in Lennox air conditioners and heat pumps — without it, the compressor cannot shed heat and quickly trips on high pressure or overheats.
Typical failure symptoms include a fan that hums but won't start, a motor that runs hot and cycles off on its internal overload, grinding or squealing bearings, or an outdoor unit that runs while the fan sits still. A failing capacitor, worn bearings, or a burned winding are the usual culprits.
Choosing OEM ensures the correct horsepower, RPM, rotation, voltage, and shaft dimensions Lennox specified for this application. A mismatched aftermarket motor can spin the wrong direction, deliver the wrong airflow, or overload the run capacitor. The exact 88C73 restores proper heat rejection, protects your compressor from high-pressure damage, and delivers reliable, quiet performance in your Lennox system.