A lights integrated cooling system for providing environmental temperature controls for indoor growing environments is provided. The indoor growing environment has a predetermined target temperature. The system comprises a frame structure having top and bottom plumbing manifolds. A water cooled light bar is provided having first and second ends with the first end being fluidly connected to the top plumbing manifold and the second end being fluidly connect to the bottom plumbing manifold. A chiller is fluidly connected to the top plumbing manifold, the light bar and the bottom plumbing manifold. An amount of coolant circulates through the chiller, the top plumbing manifold, the light bar, and the bottom manifold. Heat from the light bar is transferred to the coolant thereby raising the temperature of the coolant. The chiller reduces the temperature of the coolant and the coolant leaving the chiller is chilled to a predetermined leaving water temperature. Heat transfer from the coolant results in the predetermined target temperature being approximately equal to the predetermined leaving water temperature.