A control system for a heating, ventilation, and air conditioning (HVAC) system (1000,1002) having a HVAC compressor assembly with first and second compressor assemblies, wherein the first compressor assembly comprises a first tandem compressor assembly having a first compressor and a second compressor operationally connected for tandem operation as part of a first circuit having first heat transfer devices and wherein the second compressor assembly comprises at least a third compressor comprising a part of a second circuit having second heat transfer devices separated from the first heat transfer devices, the control system comprising: a control assembly comprising a controller to control operation of the first compressor assembly and the second compressor assembly of the HVAC compressor assembly, and wherein the control assembly is configured to operationally connect to the HVAC compressor assembly of the HVAC system (1000, 1002) to control the environment in an enclosed space; wherein, the controller operates the HVAC compressor assembly to deliver a load capacity in one or more demand stages, wherein the controller further operates the HVAC compressor assembly in at least a lower demand stage and a higher demand stage, such that the HVAC compressor assembly delivers a larger capacity at the higher demand stage than at the lower demand stage; wherein the control assembly operates the HVAC compressor assembly in one or more modes of operation based on an ambient temperature outside the enclosed space; wherein, the controller operates: the first compressor in an ON-state; and the second compressor in an OFF-state during the lower demand stage in a first mode of operation; wherein, the controller operates the first compressor in an OFF-state and the second compressor in an OFF-state to keep the first compressor and the second compressor idle for a first time period in response to an increase in load demand on the HVAC compressor assembly from the lower demand stage to the higher demand stage, and wherein the first time period allows lubricant levels to equalize between the first compressor and the second compressor; wherein the controller operates: the third compressor in an ON-state during the first time period, to utilize the heat transfer capacity of the second heat transfer devices on the second circuit; and the first compressor and the second compressor in an ON-state in the higher demand stage to meet the increased load demand following expiration of the first time period. a control assembly comprising a controller to control operation of the first compressor assembly and the second compressor assembly of the HVAC compressor assembly, and wherein the control assembly is configured to operationally connect to the HVAC compressor assembly of the HVAC system (1000, 1002) to control the environment in an enclosed space; wherein, the controller operates the HVAC compressor assembly to deliver a load capacity in one or more demand stages, wherein the controller further operates the HVAC compressor assembly in at least a lower demand stage and a higher demand stage, such that the HVAC compressor assembly delivers a larger capacity at the higher demand stage than at the lower demand stage; wherein the control assembly operates the HVAC compressor assembly in one or more modes of operation based on an ambient temperature outside the enclosed space; wherein, the controller operates: the first compressor in an ON-state; and the second compressor in an OFF-state during the lower demand stage in a first mode of operation; the first compressor in an ON-state; and the second compressor in an OFF-state during the lower demand stage in a first mode of operation; wherein, the controller operates the first compressor in an OFF-state and the second compressor in an OFF-state to keep the first compressor and the second compressor idle for a first time period in response to an increase in load demand on the HVAC compressor assembly from the lower demand stage to the higher demand stage, and wherein the first time period allows lubricant levels to equalize between the first compressor and the second compressor; wherein the controller operates: the third compressor in an ON-state during the first time period, to utilize the heat transfer capacity of the second heat transfer devices on the second circuit; and the first compressor and the second compressor in an ON-state in the higher demand stage to meet the increased load demand following expiration of the first time period. the third compressor in an ON-state during the first time period, to utilize the heat transfer capacity of the second heat transfer devices on the second circuit; and the first compressor and the second compressor in an ON-state in the higher demand stage to meet the increased load demand following expiration of the first time period.