By documenting several key metrics at the time of commissioning or retro-commissioning, the performance of a system can be benchmarked. The benchmarks can then be used for a variety of purposes including comparison to manufacturer data, tracking performance degradation over time, and diagnostics. Creating and affixing a label to the equipment with commissioning data and space for ongoing data recording provides a record that is accessible to any personnel who may service the unit. Details of the metrics and proposed commissioning label are provided.