Cost Per Unit

Maintenance Cost Per Unit (MCPU) is the ratio of total maintenance expenditures (labor plus parts) divided by the total number of good units produced, quantifying the maintenance burden per product. In CMMS platforms like ServiceGrid, MCPU is automated by integrating live OEE cycle counts with the digital maintenance ledger for real-time financial validation.

On the shop floor, technicians log labor hours and MRO spare parts against work orders, while the CMMS pulls the exact count of good units from machine counters or OEE systems. Management dashboards use MCPU to detect 'reactive maintenance creep': a rising cost per unit with flat production signals deteriorating equipment performance, while a falling cost during volume growth confirms maintenance efficiency at scale. Industry benchmarks for CMMS-managed food plants range from $0.04–$0.08/unit, whereas reactive-heavy operations often run $0.18–$0.28/unit.

• ⚠️Ignoring Quality (Good Units): Calculating MCPU using total units produced instead of good units artificially lowers the metric when production includes high scrap rates.
• ⚠️Excluding Indirect Labor/Overhead: Failing to aggregate all technician labor hours and support costs leads to underreported maintenance spend and misleadingly low MCPU.
• ⚠️Reactive Maintenance Creep: Allowing unplanned corrective repairs to dominate the maintenance mix drives MCPU to the $0.18–$0.28 range and masks equipment health issues until catastrophic failure.