A method for capturing and mapping equipment performance data for a plurality of devices of a system, the method being performed by at least one controller and comprising: for each device: determining, by performing testing on the device using a testing facility where instant operating parameters can be controlled to be at a specific operating point, model values of a performance parameter of the device over an operating range of at least two operating parameters which affect the performance parameter, wherein each model value is representative of an operating point of the at least two operating parameters, the testing performed post manufacturing and prior to installation of the device; storing to memory the determined model values of the performance parameter along with a time of said determining and a unique identifier of the device, wherein said model values are stored in the memory as a multi-dimensional performance map; detecting, when the device is installed in the system, during real-time normal operation of the system, the model values of the performance parameter of the device, with respect to the at least two operating parameters, and storing to the memory the detected model values along with the unique identifier of the device and a time of said detecting, wherein said detected model values are stored in the memory as a detected multi-dimensional performance map; comparing, when the device is installed in the system, in real-time during normal operation of the system, the detected multi-dimensional performance map of the performance parameter of the device, with respect to the at least two operating parameters, with the stored determined multi-dimensional performance map; and in response to said comparing being within a threshold difference, looping the method to the detecting during real-time normal operation of the system; in response to said comparing exceeding the threshold difference, outputting an alert or sending the alert to a communication device; wherein each device is a pump or a chiller of a chilled water plant and the operational parameter for the pump comprise at least one or all of: water flow, impeller speed, pump head pressure, pump shaft power draw, number of active units, vibration, and/or noise sound level and the operating parameter for the chiller comprises at least one of water flow, refrigerant flow, evaporator entering temperature, evaporator leaving temperature, condenser entering temperature, condenser leaving temperature, refrigerant pressure difference, power consumed, and/or number of active units; wherein the performance parameter comprises power consumed by the pump or power consumed by the chiller of the chilled water plant. determining, by performing testing on the device using a testing facility where instant operating parameters can be controlled to be at a specific operating point, model values of a performance parameter of the device over an operating range of at least two operating parameters which affect the performance parameter, wherein each model value is representative of an operating point of the at least two operating parameters, the testing performed post manufacturing and prior to installation of the device; storing to memory the determined model values of the performance parameter along with a time of said determining and a unique identifier of the device, wherein said model values are stored in the memory as a multi-dimensional performance map; detecting, when the device is installed in the system, during real-time normal operation of the system, the model values of the performance parameter of the device, with respect to the at least two operating parameters, and storing to the memory the detected model values along with the unique identifier of the device and a time of said detecting, wherein said detected model values are stored in the memory as a detected multi-dimensional performance map; comparing, when the device is installed in the system, in real-time during normal operation of the system, the detected multi-dimensional performance map of the performance parameter of the device, with respect to the at least two operating parameters, with the stored determined multi-dimensional performance map; and in response to said comparing being within a threshold difference, looping the method to the detecting during real-time normal operation of the system; in response to said comparing exceeding the threshold difference, outputting an alert or sending the alert to a communication device; wherein each device is a pump or a chiller of a chilled water plant and the operational parameter for the pump comprise at least one or all of: water flow, impeller speed, pump head pressure, pump shaft power draw, number of active units, vibration, and/or noise sound level and the operating parameter for the chiller comprises at least one of water flow, refrigerant flow, evaporator entering temperature, evaporator leaving temperature, condenser entering temperature, condenser leaving temperature, refrigerant pressure difference, power consumed, and/or number of active units; wherein the performance parameter comprises power consumed by the pump or power consumed by the chiller of the chilled water plant.