When to Repair vs. Replace a Condenser Motor — A Cost-Benefit AnalysisNot every failed motor is worth repairing. And not every failing motor warrants immediate replacement. This final article helps you make a defensible, cost-conscious decision.Factors Favoring RepairThe motor is less than 5 years old. A relatively new motor that has suffered a one-time failure (e.g., a capacitor killed by a power surge) is worth repairing.The failure is limited to the capacitor. Capacitors cost $10–$40 and take 15 minutes to replace. This is always worth repairing.The motor is a large commercial unit. For motors 5 HP and above, bearing replacement and rewinds can be significantly cheaper than replacement motors, especially for OEM or obsolete units.Lead time for replacement is long. In an emergency where a replacement isn’t available for days, repairing a motor to keep a critical system running is justified.Factors Favoring ReplacementThe motor has a failed winding. Rewinding small motors (under 1 HP) is rarely cost-effective. Labor costs for a rewind typically exceed the price of a new motor.The motor is more than 10 years old. Older motors have aged insulation, accumulated wear on bearings, and may be approaching end of life in multiple ways simultaneously. Repairing one fault often surfaces the next.The motor has already been repaired once. A repaired motor that fails again — particularly with a different fault — suggests systemic degradation.The system itself is aging. If the condenser unit is 15+ years old and approaching end of life, investing in motor repair delays an inevitable and potentially more expensive system failure.Replacement improves efficiency. Newer ECM (electronically commutated) motors offer dramatically better efficiency than the PSC motors they replace. In some cases, upgrade to a modern motor pays back in energy savings within 2–3 years.A Practical Rule of ThumbIf the repair cost exceeds 50% of the cost of a new motor, replace the motor. If the motor is in a system where replacement cost exceeds 50% of a full system replacement, factor in the age and overall condition of the system before investing in the motor alone.Summary TableScenarioRecommended ActionFailed capacitor, motor under 5 years oldRepair (replace capacitor)Open winding, motor under 1 HPReplace motorOpen winding, motor 5 HP and aboveEvaluate rewind cost vs. new motorBearing failure, motor under 1 HPReplace motorBearing failure, motor 1–5 HPReplace bearingsMotor over 10 years old, second failureReplace motorMotor in system over 15 years oldConsider full system evaluation