A conditioning system (100A, 100B, 200, 300, 400, 500, 600, 704, 900, 1000, 1100) for providing cooling to a heat load (102A, 102B, 502, 602, 702, 1102), the conditioning system comprising: a scavenger plenum (104A, 104B, 204, 304, 504, 1104) having an air inlet (106A, 106B, 206, 506) and outlet (108A, 108B, 208, 508), the scavenger plenum configured to direct scavenger air in an air flow path from the air inlet to the air outlet; an evaporative cooler (110A, 110B, 210, 310, 411, 511, 611, 711, 911, 1011, 1110) arranged inside the scavenger plenum in the air flow path and having a first cooling fluid circuit configured to circulate a first cooling fluid through the evaporative cooler, the evaporative cooler configured to selectively evaporate a portion of the first cooling fluid; a first cooling component (160A, 160B, 260, 360, 460, 560, 660, 760, 960, 1060, 1160) arranged inside the scavenger plenum between the air inlet and the evaporative cooler, the first cooling component configured to selectively condition the scavenger air flowing through the first cooling component; a second cooling component (112A, 112B, 212, 312, 412, 512, 612, 712, 912, 1012, 1112) arranged inside the scavenger plenum between the evaporative cooler and the air outlet and having a second cooling fluid circuit configured to circulate a second cooling fluid through the second cooling component, the second cooling component configured to reduce a temperature of the second cooling fluid using scavenger air; and a process cooling fluid circuit (126A, 128A, 126B, 128B, 225, 219, 339, 343, 441, 443, 941, 943, 1041, 1043, 1126, 1128) connected to at least one of the first cooling fluid circuit and the second cooling fluid circuit, the process cooling fluid circuit configured to provide a process cooling fluid to cool the heat load (102A, 102B, 502, 602, 702, 1102). a scavenger plenum (104A, 104B, 204, 304, 504, 1104) having an air inlet (106A, 106B, 206, 506) and outlet (108A, 108B, 208, 508), the scavenger plenum configured to direct scavenger air in an air flow path from the air inlet to the air outlet; an evaporative cooler (110A, 110B, 210, 310, 411, 511, 611, 711, 911, 1011, 1110) arranged inside the scavenger plenum in the air flow path and having a first cooling fluid circuit configured to circulate a first cooling fluid through the evaporative cooler, the evaporative cooler configured to selectively evaporate a portion of the first cooling fluid; a first cooling component (160A, 160B, 260, 360, 460, 560, 660, 760, 960, 1060, 1160) arranged inside the scavenger plenum between the air inlet and the evaporative cooler, the first cooling component configured to selectively condition the scavenger air flowing through the first cooling component; a second cooling component (112A, 112B, 212, 312, 412, 512, 612, 712, 912, 1012, 1112) arranged inside the scavenger plenum between the evaporative cooler and the air outlet and having a second cooling fluid circuit configured to circulate a second cooling fluid through the second cooling component, the second cooling component configured to reduce a temperature of the second cooling fluid using scavenger air; and a process cooling fluid circuit (126A, 128A, 126B, 128B, 225, 219, 339, 343, 441, 443, 941, 943, 1041, 1043, 1126, 1128) connected to at least one of the first cooling fluid circuit and the second cooling fluid circuit, the process cooling fluid circuit configured to provide a process cooling fluid to cool the heat load (102A, 102B, 502, 602, 702, 1102).