A cooling tower having a controller installed within the cooling tower which controls the operation of pump motors, fans, dampers, valves and adjusts the speed of the fan and pump motor. The controller is placed inside a compartment which is attached to an inside surface of the cooling tower. The compartment has an inlet and an outlet such that conditioned air enters the compartment inlet and flows over the surface of the controller to either cool or heat the controller and then the conditioned air, which has flowed over the surface of the controller, exits the compartment through the compartment outlet.