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Genuine OEM Lennox 25W17 fan motor. This motor spins the outdoor fan blade that moves air across the condenser coil, allowing your Lennox system to expel absorbed heat and maintain proper refrigerant pressures. As a factory-specified part, it provides the exact speed, torque, and rotation direction your equipment requires.
Signs that this motor is wearing out include a fan that struggles to start, spins slowly, or stops entirely, buzzing or grinding noises, intermittent shutdowns during peak heat, or a hot electrical odor around the unit. Running a compressor with a failing condenser fan drives up head pressure and can quickly cascade into costlier repairs.
For Lennox equipment, the OEM 25W17 is the safe choice because aftermarket substitutes frequently vary in bearing design, shaft dimensions, mounting pattern, and electrical rating. Installing the genuine part guarantees a correct fit, restores rated efficiency, and keeps your system operating exactly as engineered.