Repair or Replace?
Determining whether to repair or replace a motor is a critical decision for facilities both small and large. Decision makers must weigh the pros of replacement (improved efficiency, fewer breakdowns/production halts) versus the pros of repair (short-term cost savings).
EISA does not require that non-compliant motors be put out of service, only that most new general purpose 1-200 hp motors produced and sold in the United States must meet NEMA Premium Efficiency standards. This means motor repair may be a viable option in some situations, but it's important to understand the real cost of repairing lower-efficiency motors.
- For smaller motors, buying new costs less than rewinding
- Larger premium efficiency motors offer fast payback when compared to rewinding costs
- Rewinding typically results in an efficiency loss of 1%, which increases energy costs*
*According to the BC Hydro and Ontario Hydro Studies.
**This is based on $.10/kwh, so if energy costs are higher in your area, your savings will be greater.