Abstract: Systems and methods are disclosed of removing heat generated by lighting, e.g., in an indoor grow environment. An example method includes providing a first manifold with an inlet to receive cool air, and a plurality of outlets. The example method also includes providing a second manifold with a plurality of inlets to receive air, and an outlet. The example method also includes providing ducts connecting the outlets of the first manifold to the inlets of the second manifold. The example method also includes connecting the ducts to lighting fixtures of the indoor grow environment, for air to move through the ducts. The example method also includes providing an air mover to pull air through the manifolds and ducts and remove heated air from an area of the lighting fixtures.